Answer:
The gardener performed hybrid crossing and the purple plant's genotype is: PP
Explanation:
Since we know the offspring's phenotype (appearance) is purple, the genotype can either be PP or Pp. We know that the farmer crossed a white plant, we can denote it's genotype as pp and a purple plant with a dominant trait. Because the farmer crossed the white plant with the purple plant, this tells us that the genotype of the purple plant must be PP.
Purple flowers are dominant to white flowers in pea plants. By performing a monohybrid cross and observing all purple offspring, the gardener determined that the purple plant's genotype is PP.
Explanation:The gardener performed a monohybrid cross by mating a purple plant with a white plant. Since all the offspring had purple flowers, we can conclude that purple flowers are dominant. Therefore, the purple plant's genotype must be homozygous dominant for the purple flower color, which is represented as PP. This is because, even when crossed with a plant possessing the recessive white flower color (pp), all the offspring expressed the dominant purple flower color, meaning the purple parent must have had two dominant alleles to pass on.
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Plants exchange gas with the atmosphere. Which statement accurately describes this process?
A. Plants release carbon dioxide and take in oxygen through the stomata in leaves.
B. Plants release oxygen and take in carbon dioxide through the xylem in leaves.
C. Plants release carbon dioxide and take in oxygen through the xylem in leaves.
D. Plants release oxygen and take in carbon dioxide through the stomata in leaves
Answer:
C. Plants release carbon dioxide and take in oxygen through the xylem in leaves.
Explanation:
Plants exchange gas with the atmosphere and release carbon dioxide and take in oxygen through the xylem in leaves.
Answer: D. Plants release oxygen and take in carbon dioxide through the stomata in leaves
Explanation:
Plants evolved from freshwater green algae and eventually developed strategies that adapt them well for life on land. The major source of plant nutrition is the fixation of atmospheric CO2 into simple sugar using the energy of the sun. CO2 enters through the stomata. O2 is a product of photosynthesis and atmospheric component that also moves through the stomata. It is used in cellular respiration to release energy from the chemical bonds in the sugar to support growth and maintenance in the plant. Water and gas diffusion into and out of a plant occurs through tiny mouth-shaped openings called stomata (singular, stoma).
Which of the following mechanisms is NOT used to propel lymph through lymphatic vessels? A. gravity B. small heart-like pumps C. the milking action of muscles D. pulmonary motion
Answer:
B. small heart-like pumps
Explanation:
Small heart-like pumps is a mechanism that is NOT used to propel lymphs through lymphatic vessels.
The lymphatic system uses gravity, muscle contractions, and breathing to move lymph through the vessels. It does not use small heart-like pumps. The heart's pumping action, by contrast, is essential to the functioning of the venous system.
Explanation:The lymphatic system propels lymph through the lymph vessels via various mechanisms. These mechanisms include the contraction of skeletal muscles during body movements, the process of breathing, and the force provided by gravity, all of which aid in moving lymph toward the heart. The lymphatic system does not, however, contain small heart-like pumps. The statement 'B. small heart-like pumps' therefore represents the mechanism not used to propel lymph through lymphatic vessels.
One key difference between the cardiovascular and lymphatic systems is that lymph is not actively pumped by the heart. Instead, it moves through the vessels due to body movements, the contraction of skeletal muscles, gravity, and breathing. These mechanisms help keep lymph moving in one direction—toward the heart—thanks to the action of one-way semi-lunar valves in the lymphatic vessels.
In contrast to the lymphatic system, the venous system relies on the heart's pumping action to move blood from areas of higher pressure to areas of lower pressure.
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If Larry is taught new information about an elephant, which is a large animal, he will benefit from using ___________ about other large animals to store that new information so he can retrieve that information when he needs it.
Answer:
schemas
Explanation:
If Larry is taught new information about an elephant, which is a large animal, he will benefit from using schemas about other large animals to store that new information so he can retrieve that information when he needs it.
He will benefit from using schemas about other large animals.
Schemas are units of understanding that can be hierarchically categorized as well as webbed into complex relationships with one another.What is the benefit of using Schemas?Schemas can be useful because they allow to take shortcuts in interpreting the vast amount of information that is available in environment. These mental frameworks also cause to exclude pertinent information to focus instead only on things that confirm pre existing beliefs and ideas.
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Horizontal gene transfer can occur through several mechanisms. Why is this relevant to humans?
A. Bacteria are never beneficial to humans.
B. Bacteria can exchange genes for resistance to antibiotics in this way.
C. Bacteria can divide quickly using binary fission.
D. Viruses can infect bacteria, inserting their genetic material into the bacterial DNA.
Answer:
B
Explanation:
Horizontal gene transfer is the transfer of genes across a generation as opposed to down generations in vertical gene transfer. Bacteria can transfer gene horizontally through mechanisms such as transformation and transduction. The ‘male’ bacteria develops pili that it inserts into the ‘female’ bacteria and transfers some genes. This result in recombinant DNA that confers some of the beneficial characteristics to the ‘female’ bacteria that were there in the ‘male’ bacteria. This is how a population of bacteria can develop resistance to an antibiotic really fast.
Final answer:
Horizontal gene transfer is a vital concept in understanding antibiotic resistance among bacteria, as it allows bacteria to exchange resistance genes quickly.
Explanation:
Horizontal gene transfer is relevant to humans primarily because of its role in the spread of antibiotic resistance among bacteria, as captured in option B: Bacteria can exchange genes for resistance to antibiotics in this way. Through mechanisms such as transformation, transduction, and conjugation, bacteria can swiftly adapt to environmental pressures, including the presence of antibiotics. As a result, horizontal gene transfer serves as a significant evolutionary pathway, allowing bacteria to acquire and disperse resistance genes, making infections harder to treat with standard antibiotics.
Which model is most likely used to show something that happens too slowly to see?a model of a weather systema model of mountain formationa model of the area of a circlea model of an architectural building
Answer:
a model of mountain formation ( second choice)
Answer:
The correct answer is a model of mountain formation.
Explanation:
A model signifies towards a demonstration of a process, an idea, or a system that is used to illustrate a particular procedure, which cannot be experienced straightforwardly. The models are generally used in science to illustrate various procedures. When one is speaking about an appropriate model to demonstrate an incident, which takes place gradually, the most likely choice from the mentioned options will be a model of mountain formation. This is due to the fact that the procedure of mountain formation takes place very gradually over an extended time duration.
What are autosomes and how many do humans have?
Which of the following substances is not normally found in filtrate?
a. water and small solutes
b. blood cells and large particles
c. ions, such as sodium and potassium
d. nitrogenous waste particles, such as
urea
Answer: B
Explanation:
Blood cells are typically too large to pass through the glomerular filtration membrane. However if they do, this can be indicative of problems with the filtrate.
Answer: blood cells and large particles.
Explanation:
Filtrate is the fluid that is filtered from the blood which pass through the nephron. When blood flows from the nephron, it enter the Bowman's capsule of the glomerulus. The tiny walls of the glomerulus can only allow the passage of small particles or is not selectively permeable to small particles such as water, ions ,sodium, potassium, nitrogenous wastes. Larger molecules and blood cells stay in the blood vessels because they cannot pass through the tiny walls
If a keystone species is removed from an ecosystem,
a. only abiotic factors can be affected.
b. only biotic factors can be affected.
c. neither abiotic nor biotic factors can be affected.
d. abiotic and biotic factors can be affected.
Answer: D. abiotic and biotic factors can be affected.
If a keystone species is removed from an ecosystem, both abiotic and biotic factors can be affected, which is option d, as keystone species play a crucial role in maintaining the balance of an ecosystem. Their removal can have significant impacts on the ecosystem as a whole, affecting both biotic and abiotic factors.
What is a keystone species?If a keystone species is removed from an ecosystem, both abiotic and biotic factors can be affected. Keystone species are species that have a disproportionately large effect on the structure and function of their ecosystem, despite their low biomass or population. They play critical roles in maintaining biodiversity and ecological balance. When a keystone species is removed, it can cause a ripple effect throughout the entire ecosystem.
Hence, if a keystone species is removed from an ecosystem, both abiotic and biotic factors can be affected, which is option d, as keystone species play a crucial role in maintaining the balance of an ecosystem. Their removal can have significant impacts on the ecosystem as a whole, affecting both biotic and abiotic factors.
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Plant cells can better tolerate exposure to hypotonic solutions than can animal cells. Which one of the following helps to best explain why plant cells can better tolerate hypotonic solutions? a. The hot sun on plant cells causes any extra water to evaporate. b. The rigid cell walls limit how far plant cells can expand and exert a back pressure to limit further water uptake. c. Chloroplasts consume the extra water in photosynthesis, decreasing the swelling. d. The veins in plants drain away the extra water from the plant cells. e. Stomata in plant cell leaves quickly drain excess water from the cells.
Answer:
b. The rigid cell walls limit how far plant cells can expand and exert a back pressure to limit further water uptake.
Explanation:
Plant cells have a rigid cell wall made of cellulose. Animal cells lack a cell wall.
When the plant cells are placed in a hypotonic solution, water enters into the cells and the cells expand. However, after a certain limit, the cell wall exerts wall pressure on the contents of the cell and does not allow it to take more water in. The wall pressure from the cell wall of plant cells protects them against bursting when placed in a hypotonic solution.
Animal cells burst out due to intake of water by osmosis when placed in a hypotonic solution. They do not have a cell wall to protect them from bursting.
Test your knowledge about the specific functions of the five types of white blood cells
1. Release histamine, which promotes inflammation.
2. The cytoplasm is a thin ring around the nucleus.3. Contain cytoplasmic granules that stain bright red with eosin.4. The most common type of white blood cells. 5. Two- to four-lobed nuclei.
6. Enlarge and become macrophages which engulf foreign substances. 7. Contain large cytoplasmic granules that stain dark blue or purple with basic dyes.
Answer:
1. Release histamine, which promotes inflammation- basophils.
2. The cytoplasm is a thin ring around the nucleus- lymphocytes.
3. Contain cytoplasmic granules that stain bright red with eosin- eosinophils.
4. The most common type of white blood cells- neutrophils.
5. Two- to four-lobed nuclei- neutrophils.
6. Enlarge and become macrophages which engulf foreign substances- monocytes.
7. Contain large cytoplasmic granules that stain dark blue or purple with basic dyes- basophils.
Explanation:
White blood cells or WBC are the cells which provide the defence against pathogens so they are also known as the soldiers of the body. Five types of WBC are present in the body namely - neutrophils, eosinophils, monocytes, basophils and lymphocytes.
1. Neutrophils- They are the most abundant WBC in the blood in about 40% to 60%. These neutrophils are distinguished on the basis of lobes which are usually present in two to five.
2. Eosinophils- the cells which account for 1% to 4% of total WBC characterized by red-stained cytoplasmic granules and a bilobed nucleus.
3. Basophils- The cells characterized by a large blue -stained cytoplasmic granules. they act by producing heparin nd histamine in allergic reactions.
4. Lymphocytes- they are the smallest of all the WBC easily characterized by a spherical nucleus with very little cytoplasm.
5. Monocytes- the largest of all WBC with a kidney-shaped nucleus and abundant cytoplasm. They act by becoming macrophages and engulfing the pathogens and foreign material by a process called phagocytosis.
The five types of white blood cells are Neutrophils, Eosinophils, Basophils, Lymphocytes, and Monocytes. Each has different functions which include fighting infections, combating allergic reactions and parasites, releasing histamines to promote inflammation, producing antibodies, and repairing tissues.
Explanation:The specific functions of the five types of white blood cells are as follows:
Neutrophils: They are the most common type of white blood cells and their main function is to fight infection by engulfing foreign particles Eosinophils: They contain cytoplasmic granules that stain bright red with eosin, and are primarily involved in the immune response against parasitic infections and allergic reactions. Basophils: They release histamine, promoting inflammation, and contain large cytoplasmic granules that stain dark blue or purple with basic dyes. Lymphocytes: Their cytoplasm is a thin ring around the nucleus and they play a key role in producing antibodies and immunological memory. Monocytes: They have the ability to enlarge and become macrophages which engulf foreign substances and are crucial for tissue repair. Learn more about White Blood Cells here:https://brainly.com/question/24122064
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A large population of mice (2000 individuals) lives in an area dominated by small shrubs in the desert. When the population size got too high, a small group of 6 individuals left and colonized an area adjacent to the original population's home, but this area is primarily dominated by trees instead of shrubs. There is no gene flow between the dispersers and the original population. A researcher sequenced the genomes of representative individuals from both populations and found substantial genetic differences between them. Which of the following would MOST account for the amount of genetic differences observed?
Divergence between the two populations was caused solely by drift.
Since the original dispersal event, the small population will have evolved more than the large population.
Divergence between the two groups is high because of gene flow between them.
The divergence between populations could only have been caused by stabilizing selection.
Answer:
Since the original dispersal event, the small population will have evolved more than the large population
Explanation:
When the group of 6 individuals left and colonized an area that was different to their initial home, they had to adapt to the new environment and new food resources. Offspring from the small population that had more advantageous characteristics had a better chance of survival than those that did not.
The offspring that had the better chance of survival were the ones that inherited new traits that helped survive in their environment with more trees and thus they would breed with other mice that also survived, passing on these traits to their offspring. The mice that did not inherit these traits, could not survive well and probably died.
The mice from the original population did not need to inherit as many new traits as they were in a familiar environment and thus did not evolve as much as the smaller population.
The genetic divergence observed between the two mouse populations is most likely accounted for by a combination of genetic drift, due to the small size of the dispersed group, and natural selection, due to the differing environments.
Explanation:The genetic differences observed between the two populations of mice are most likely due to a combination of genetic drift and natural selection. The initial genetic divergence of the small group of 6 individuals that separated from the larger population could have been influenced by genetic drift. Because this group is very small, it is highly susceptible to the effects of genetic drift, which can lead to large changes in allele frequencies over time. In other words, random changes in the gene pool of this small population can cause certain traits to become more or less common purely by chance.
On top of random genetic drift, it's also a solid bet that there's been some natural selection happening. Given that the small group moved into a new area dominated by trees instead of shrubs, different attributes would be helpful for survival and reproduction. Those mice that possessed favorable traits for this new tree-dominated environment would have a better chance of surviving and passing these traits to their offspring, leading to natural selection.
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true or false Proliferative retinopathy a diabetic microvascular disease represent the greatest threat to vision it is characterized by the proliferation of new blood vessels growing from the retina into the vitreous.
Answer:
True.
Explanation:
Proliferative retinopathy may be described as a medical condition in which the new and weak blood start to form on retina and restores the blood supply. This condition may also develop in diabetic patient.
This is a diabetic microvascular disease that can affect the physiology of eyes. The individual has the threat to vision because new blood vessels grows on retina from the vitreous.
Thus, the answer is true.
Proteins that bind to cells and stimulate cell division are called
a. growth factors.
b. carcinogens.
c. kinases.
d. enzymes.
The answer to this question would be A:growth factors
Hope this helped!!
Proteins that bind to cells and stimulate cell division are called growth factors. Thus, the correct option for this question is A.
What do you mean by Cell division?Cell division may be defined as a biological process through which a parent cell divides into two daughter cells. There are two types of cell division. They are as follows:
Mitosis: A parental cell give rise to the production of two daughter cells which are genetically identical to the parental cell. Meiosis: A parental cell give rise to the production of four daughter cells which are genetically unique to the parental cell.Carcinogens are cancer-causing agents which stimulate the abnormal or excessive growth of cells in living organisms. Enzymes are biological catalysts that increase the rate of a chemical reaction without being involved in the overall process.
Kinases are the enzymes that significantly catalyze the transfer of a phosphate group from ATP to a specific molecule during a reaction.
Therefore, proteins that bind to cells and stimulate cell division are called growth factors. Thus, the correct option for this question is A.
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Which is a primary disturbance?
A. Tree falling
B. Volcanic eruption
C. Snow melting
D. Logging
Answer:
A volcanic eruption would be a primary disturbance, because it would affect the complete environment. The eruption would destroy all plants, and would most likely kill all organisms. After the volcanic eruption however, a second generation of organisms will move into the habitat.
Explanation:
Hope this helps!
The primary disturbance is a volcanic eruption. The correct option is B.
What is primary disturbance?In ecology, the primary disturbance is any disturbance that causes a temporary change in the environment. It changes and affects the biotic and abiotic factors of the environment.
Volcanic eruption is a primary disturbance because it causes earthquakes and destruct the areas nearby.
Thus, option B. Volcanic eruption is correct regarding a primary disturbance.
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The muscles in the leg are considered long muscles. As the muscles in the leg contract and relax they work to provide movement. What would happen if the upper leg muscles were damaged?
Your femur and hamstrings would not be held in place.
You would be able to move your knee to flex and extend your leg.
You would not be able to extend the leg straight.
Your hipbone will be dislocated causing a deformity in your side.
Answer:
You would not be able to extend the leg straight
The hamstrings start at the pelvis and end in the lower leg so they wouldn't be affected.
If the muscles are damaged movement is not possible.
The Hip bone is more attached to the pelvis and bone rather than upper leg muscles.
If the upper muscles are damages, movement would be extremely painful or impossible if we assume the sliding filament theory is correct making that the correct answer.
(Give me Brainliest)
Answer:
You would not be able to extend the leg straight.
Explanation:
You see a white marker with an orange circle and black lettering. what does this marker tell you
Answer:
Controlled area
Explanation:
A white marker with an orange circle and black lettering indicate a controlled area which may represent a speed limit, wake restrictions or anchoring.These markers are regulatory markers that are present to make the boaters aware of the dangers and their surroundings. These markers help in navigation.A white marker with an orange circle and black lettering usually signifies an information or instruction sign in public or recreational areas in the US. The specific message depends on the text in the black lettering.
Explanation:When you see a marker with an orange circle and black lettering, it typically signifies a particular type of information or instruction. In the United States, this type of marker is often used for informational signs or notices in recreational or public areas. It can give instructions, provide information about the area, or serve as a warning. The specific information conveyed depends on the text included in the black lettering.
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How do adult stem cells differ from embryonic stem cells?
A. Adult stem cells have unipotency, and embryonic stem cells have pluripotency.
B. Adult stem cells have totipotency, and embryonic stem cells have multipotency.
C. Adult stem cells have high healing potential, and embryonic stem cells have low healing potential.
D. Adult stem cells can only be used by adults, and embryonic stem cells can only be used by babies.
Answer:
Adult stem cells have unipotency, and embryonic stem cells have pluripotency.
A.
Answer:
A. Adult stem cells have unipotency, and embryonic stem cells have pluripotency.
Explanation:
The basic difference between a stem cell and a totipotent cell is that a stem cell has the potential to regenerate itself apart from producing other cells which are alike, for example hematopoietic stem cell. In contrast to this, a totipotent cell has the potential to develop into an entire organism but it cannot regenerate itself, for example zygote. Zygote can produce the entire organism but once zygote divides to form an embryo it can never become a zygote again.
In the early embryonic stages in mammals when the zygote divides to form 8 celled morula, each of the cell of morula retain its power of regeneration of an entire individual if allowed to develop separately but with advancement in development, the stem cells start to loose their potential to develop into the entire individual and they are confined to only pluripotency which means that they can only form an embryo and some parts of extra embryonic membranes not all of them.
Further when gastrula stage arrives, the power of cells to regenerate reduces even more and become restricted to only multipotency.
In the end, when the entire individual is developed the adult stem cells remain the only cells which have power of regeneration and they have unipotency which means that they can regenerate only one type of tissue. For example, skin cells are unipotent cells which can only regenerate skin.
Mitochondrial presequences are ____ charged amphipathic sequences retained in the ____ stage through association with ____ molecular chaperones.
A. negatively; folded; Hsp70
B. positively; unfolded; Hsp70
C. neutral; unfolded; Hsp40
D. negatively; prefolded; Hsp90
E. positively; folded; Hsp40
Answer:
E. positively; folded; Hsp40
Explanation:
Bilaterally symmetrical animals tend to have all of the following except:Question 4 choicesChoice A., a distinct head and tail end.Choice B., one plane of symmetry running from head to tail.Choice C., sensory organs concentrated in the head.Choice D., poorly developed organ systems.
Answer:
Bilaterally symmetrical animals tend to have all of the following except: poorly developed organ systems.- Choice D.
For each region of the lac operon on the F' plasmid, I+ P+ Oc Z− Y+ , determine whether the region is wild type (that is, it produces a functional protein or it's a correct protein binding sequence) or whether the region is mutated. Select all that apply :
(A) The promoter sequence is correct/functional.
(B) The repressor protein is produced.
(C) The operator sequence is correct/functional.
(D) Beta-galactosidase is produced from the lacZ gene.
(E) Permease is produced from the lacY gene.
Answer:
A,B and E
Explanation:
I+: I refers to the lac repressor, the + indicates that the repressor is functionalP+: P refers to the promoter region and the + indicates that the promoter is functionalOc: O refers to the operator region, but the Oc indicates that the operator is constitutive ie. that it is always on/ can't be turned off.Z-: Z refers to the LacZ gene which produces β-galactosidase. Z- indicates that this gene is non-functional Y+: Y refers to the LacY gene which produces the permease protein. Y+ indicates that this gene is functionalSo based on the breakdown above:
A is true because P+.B is true because I+.C is not true because the lac operon is an inducible system. The operator needs to be able to be repressed. In this case the operator is constitutive (always on) which is not the correct form.D is not true because Z-, no β-galactosidase is produced.E is true because Y+.Only A, B and E apply.
Which statement(s) correctly describe(s) the role of hormones in calcium metabolism? Be aware that all statements may be correct. Which statement(s) correctly describe(s) the role of hormones in calcium metabolism? Be aware that all statements may be correct. Intestinal absorption of calcium depends on the level of active vitamin A that we have in our body. Parathyroid hormone and calcitonin stimulate calcium reabsorption by the kidneys. Calcitonin is released when blood calcium levels are high and increases the activity of osteoclast cells in bone, releasing calcium from bone into the blood. Parathyroid hormone is released when dietary calcium levels are low.
Answer:
Parathyroid hormone is released when dietary calcium levels are low.
Explanation:
Parathyroid hormone is considered to be a vital hormone involved in regulating the calcium levels of the body. The hormone is secreted by parathyroid glands which are located behind thyroid glands in neck region. This hormone regulates the calcium level of the body by putting its action through bones, intestine and kidneys.
In actual there is a negative feedback system in the body through which parathyroid levels are controlled. When calcium levels in the blood get very low, the gland is stimulated to secrete more parathyroid hormone while when calcium is very high in the blood, it prevent the release of parathyroid hormone.
Hope it helps!
Hormones, primarily parathyroid hormone and calcitonin, play a crucial role in calcium metabolism, helping to maintain balance in the body. Their activities stimulate the release or uptake of calcium from the bones, promote calcium absorption from the intestines, and regulate calcium reabsorption at the kidneys.
Explanation:The role of hormones in calcium metabolism is primarily regulated by parathyroid hormone (PTH) and calcitonin. These hormones maintain calcium balance in our body, with PTH being generated in response to low blood calcium levels, and calcitonin being released when high calcium levels are sensed. PTH stimulates the integer absorption of calcium, reabsorption of calcium by the kidneys, and promotes the activity of cells called osteoclasts to release calcium from the bones. Conversely, calcitonin reduces calcium levels in the blood by inhibiting osteoclast activity and stimulating calcium uptake by the bones.
Under the influence of PTH, vitamin D is synthesized, which plays a significant role in facilitating the absorption of dietary calcium indirectly. Intestinal absorption of calcium does not depend on active vitamin A but on active vitamin D levels in the body. Hence, the statement about vitamin A is incorrect. Therefore, the correct statements include the roles of parathyroid hormone (PTH) and calcitonin in calcium absorption, reabsorption, and regulation in the body.
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Identify the word in italics.
Many students do not take advantage of the opportunities that are offered them.
demonstrative pronoun
indefinite pronoun
interrogative pronoun
relative pronoun
not a pronoun
Answer:
it's a demonstrative pronoun
Which motion does the tensor fascia latea perform?
A.
Adduction of the thigh
B.
Extension of the thigh
C.
Abduction of the thigh
D.
Flexion of the thigh
Answer:
C. Abduction of the thigh
Explanation:
The tensor fascia latea performs a motion of an abduction of the thigh.
Match the description of the marine organism's lifestyle with the correct term.
1.epifauna
2.holoplankton
3.meroplankton
4.nekton
5.infauna
(A) can never swim against a current
(B) lives on top of benthic sediments
(C) swims for its entire life
The correct answers are:
epifauna - lives on top of benthic sediments
holoplankton - swims for its entire life
meroplankton - can never swim against a current
nekton - swims actively against currents
infauna - lives within benthic sediments
What are marine organisms?Marine organisms are organisms that live in the marine environment, which includes oceans, seas, and other bodies of saltwater. The marine environment is home to a diverse range of organisms, including fish, shellfish, coral, seaweed, plankton, and many other types of plants and animals. These organisms play important roles in the functioning of the marine ecosystem, and many of them are important sources of food for other animals, including humans.
The marine environment is also home to a wide variety of ecosystems, including coral reefs, kelp forests, and deep-sea hydrothermal vents, each with its own unique community of marine organisms.
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Native american religions were closely linked to
Native American religions were closely interconnected with the natural world. Their religious rituals, ceremonies, and daily activities were influenced by nature cycle and they held sacred various elements of nature, reflecting their deep respect for their environment.
Explanation:Native American religions were indeed deeply interconnected with the natural world. Native Americans saw a direct bond between themselves and the environment surrounding them, and this played a significant role in their religious beliefs. Various elements of nature like animals, plants, and geographical features were often held sacred and seen as part of the spiritual realm. This connection goes beyond just respect for nature; their religious rituals, ceremonies, and daily lives were intrinsically linked to the cycles of seasons, wildlife behaviors, and agricultural routines. This deep connection to the natural world was reflected in their respect for the land, animals, and resources, leading them to live harmoniously within their environment.
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In bacterial DNA replication of the lagging strand, __________ is required for the synthesis of a new DNA strand whereas __________ is required for removing the RNA primer and replacing it with DNA nucleotides.
Answer:
In bacterial DNA replication of the lagging strand,DNA polymerase III is required for the synthesis of a new DNA strand.
whereas DNA polymerase I is required for removing the RNA primer and replacing it with DNA nucleotides.
Explanation:
Replication: is a process by which two identical copies of DNA are produced from the original DNA molecule.
Bacterial DNA replication take place in three steps
Initiation elongation termination.DNA polymerase III is an enzyme that is responsible for DNA synthesis in bacteria and to carry out the '5-3' polymerase function.
DNA polymerase consists of
pol III core: carry the polymerase activity and proofreading activity of the nucleotides which are mispaired.beta sliding clamp: increase the DNA synthesis rate. clamp loading complex. promote DNA replication.DNA polymerase I: function is to join the Okazaki fragments by removing the RNA primer and replacing it with nucleotides and to repair the damage the DNA.
In bacterial DNA replication of the lagging strand, a primer is required for synthesis of a new DNA strand, whereas DNA polymerase I is required for removing the RNA primer and replacing it with DNA nucleotides.
Explanation:In bacterial DNA replication of the lagging strand, a primer is required for the synthesis of a new DNA strand, whereas DNA polymerase I is required for removing the RNA primer and replacing it with DNA nucleotides.
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The adrenal medulla secretes epinephrine during sympathetic stimulation. Why epinephrine would increase the sympathetic response?
Answer: Because epinephrine activates the fight or flight response, related to the sympathethic response in the body.
Explanation:
The function of the Autonomic Nervous System is the regulation of the system cardiovascular, digestion, respiration, body temperature, metabolism, exocrine glands, and therefore keep the internal environment constant (homeostasis). While sympathetic activity increases in stress, the activity parasympathetic predominates during rest and satiety. The adrenal medulla originates from the neural crest and is composed of neuroendocrine specialized cells and are responsible for the production of catecholamines.
Catecholamines are dopamine, adrenaline, and noradrenaline (epinephrine and norepinephrine). Epinephrine prepares muscles, lungs, and heart for more intense activity, in situations of stress. It promotes the increase in the force of contraction in the muscles and increases in the heart rate. It also leads to increased blood pressure and bronchodilation, for greater availability of O2.
In the amber deposits along the Baltic Sea, scientists were amazed to find insects from every region of the earth. Develop a hypothesis that may explain their findings.
The amber in the Baltic Sea has exposed insects from every region of the planet trapped in it. This can be a nice evidence about the continental drift theory. The continents have been moving for billions of years now. While they are not merged today, an we have multiple separate continents, that has not always been the case. In the past, the continents have all been merged into one enormous landmass, a supercontinent. The name given tot his supercontinent is Pangaea. Since all the continents were merged, thus representing one continuous land mass, the living organisms were able to move all throughout it, including the species of insects as well. As the movement was free, the amber in what is now the Baltic Sea, managed to preserve insects numerous different species of insects, which later, as Pangaea started to break apart, were separated and lived in different land masses as they got isolated from each other.
Which part of a seed grows into a root and which plant part acts as a protective covering for a seed during seed dormancy? The part of a seed grows into a root and the acts as a protective covering for a seed during seed dormancy.
Answer:
The part of a seed grows into a root: Radicle
The part that acts as a protective covering for a seed during seed dormancy: Seed coat.
Explanation:
The seed of the plants carries embryo in it. The part of the embryo that serves as the embryonic root is called radicle. Once the conditions become favorable for growth and the seed germinates on suitable substratum, the radicle enlarges and gives rise to roots.
The seed coat is the part of the seed that protects the embryo from any injury during the seed dormancy. The seed coat is derived from the outer most covering, that is integuments of the ovule after fertilization.
They are cells which cannot make their own food there are flexible with lots of energy synthesizers they remain active at all times and if needed they could destroyed also identify who I am and illustrate how I look
The possible answer for the given problem is RBC (Red Blood Corpuscles).
Further Explanation:
RBC (Red blood cell) is component of blood that is the most vital component as it carries oxygen and other gases from one part to another part. To be precise it helps in gaseous exchange. This step is most vital because every cell in a body need oxygen to function properly. While the gas mainly carbon dioxide produced as a waste product needs to be eliminated from the body. This function is carried out by hemoglobin a part of RBC. These cells are biconcave in structure as shown in the image attached.
If we consider the given data and its fulfillment for RBC to be the answer we have,
1. Cells that cannot make their own food: RBC is the cell that gets their energy reserves via glycolysis and as they do not have any protein coding DNA they cannot make their own proteins. Thereby they have less lifespan and withers off after the completion of the span.
2. Flexible with lot of energy synthesizers: RBC lack mitochondria thus for getting energy is quite flexible with energy synthesizers.
3. They remain active all time of the day: RBC helps in carrying oxygen to the cells in need. Thus the cells work all time of day even though the body is at rest.
4. They get destroyed: RBC withers to form bilirubin and biliverdin which is a main component that gives color to fecal matter.
Learn more:
1. Learn more about protein synthesis https://brainly.com/question/1420458
2. Learn more about energy storage https://brainly.com/question/523624
3. Learn more about basic unit of structure and function in body https://brainly.com/question/862906
Answer Details:
Grade: High School
Subject: Biology
Chapter: Cell biology
Keywords:
Food, energy synthesizers, RBC, corpuscles, cell, red blood cells, oxygen, carbon dioxide, mitochondria, enucleate cell, blood cells, elimination of waste, gaseous exchange, vital process.