Answer: b. morphology
Morphology is a branch of biology which studies structure of organisms. It studies external and internal features in an organism. For example external features like shape, size, color, pattern etc. and internal features like bones and organs can be studied in an organism. Taxon is the group of one or more organism(s) which forms a unit. Taxon gives the hierarchy for the nomenclature of the organisms from kingdom to subspecies. Reproductive isolation explains the fact that members of different species are prevented from producing viable fertile offsprings because of chief morphology and physiological features present in them. Morphology is the basis for taxonomic categorization and classification of organisms. Every taxa differ morphologically from the other taxa. Morphology gives the identity to species hence would involve greater subjectivity in determining the species taxon.
During replication, is the original dna sequence maintained in the new strands? explain why or why not.
Answer:
During replication, is the original dna sequence maintained in the new strands.
Explanation:
DNA replication begins at one end of the double strand of DNA. The replication fork will open as the two old tapes (initial molecule) unfold in the front, while two new tapes will be synthesized below and in turn will wind in the old tapes; forming two new double strands of DNA, each containing a new strand and an old strand. For this reason, we can say that yes, during replication, the original DNA sequence is kept in the new strands.
What is the predominant mode of asexual reproduction in a sponge?
Archaea and eubacteria are primarily different in _____.
genetic make-up and biochemistry
size and shape
method of reproduction
symbiotic relationships
What is the most important hormone causing an increase in serum ca2+?
Which wavelengths of light drive the highest rates of photosynthesis? select the two best answers?
What is the major difference between modified thayer-martin (mtm) and chocolate agar?
The major difference between Modified Thayer-Martin (MTM) agar and Chocolate agar lies in their composition and intended use for the cultivation of different microorganisms.
Modified Thayer-Martin (MTM) agar is a selective medium designed specifically for the isolation of _Neisseria gonorrhoeae_, the bacterium responsible for gonorrhea. It contains antibiotics such as vancomycin, nystatin, and colistin to inhibit the growth of other bacteria and fungi that may be present in the clinical specimen. Additionally, MTM agar is supplemented with hemoglobin and other nutrients to support the growth of _N. gonorrhoeae_.
Chocolate agar, on the other hand, is a non-selective, enriched medium that supports the growth of a wide range of fastidious bacteria, including _Haemophilus influenzae_, _Neisseria meningitidis_, and _Streptococcus pneumoniae_. It is called ""chocolate"" agar because of its brown color, which comes from the addition of heated blood (usually laked horse blood) that provides essential growth factors like hemin and nicotinamide adenine dinucleotide (NAD). Chocolate agar does not contain antibiotics, making it less selective than MTM agar.
In summary, the key differences are:
- MTM agar is selective and contains antibiotics to inhibit the growth of unwanted microorganisms, while chocolate agar is non-selective and does not contain antibiotics.
- MTM agar is specifically designed for the isolation of _Neisseria gonorrhoeae_, whereas chocolate agar is used for a broader range of fastidious bacteria.
- The composition of the two media differs, with MTM agar being supplemented with hemoglobin and chocolate agar containing heated blood products.
What is the general term for a condition in which the chromosome number is not a multiple of a complete set? view available hint(s)?
What is the most likely reason for having an abnormally high blood urea level? liver dysfunction kidney dysfunction protein intake twice the rda protein intake one-tenth the rda hyperstimulation of the immune system?
If two organisms are in the same phylum, which other classification category must they also share?
A.Class
B.Order
C.Kingdom
Answer:
The answer is C-------kingdom.
Explanation:
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< Sarah >
Mr. Hammond has a small garden. He planted tomatoes, zucchini, onion, garlic and beans (legumes). When summer is over and he harvested his crops, why did Mr. Hammond pull out all of the plants except the beans? Those he tilled (mixed) back into the soil for next year’s crops. Be sure to explain your answer providing a specific reason.
Beans are the members of the family fabaceae or leguminoceae. The roots of legumes (beans) have root nodules. In the root nodules symbiotic nitrogen fixing bacteria such as Rhizobium is present that fixes atmospheric nitrogen to the soil. No plants can fix atmospheric nitrogen to the soil except nitrogen fixing bacteria. Mr. Hammond tilled (mixed) back beans plants into the soil to get nitrogen fixed in the soil by root nodule bacteria present in beans plants for next year’s crops.
The modern farmers plant legumes in order to influence the growth of nitrogen-rich fertilizers for their other crops. It is not the beans that are producing the fertilizer for the other crops, it is the nitrogen-fixing bacteria, that is, Rhizobium that generally performs the function of nitrogen fixation.
The legumes, like beans, develop in a symbiotic association with soil-dwelling bacteria. The bacteria utilize gaseous nitrogen from the air in the soil and feed this nitrogen to the legumes, in return the plant gives food in the form of bacteria to the bacteria.
When the plant dies, the fixed nitrogen is discharged, making it accessible to other plants, this also facilitates to fertilize the soil.
Organs that are reduced in size that they are just vestiges, or traces, of homologous organs in other species are called
Please help!!
What can radiometric dating tell you?
Question options:
A. the average age of a fossil
B. the transitional age of a fossil
C. the relative age of a fossil
D. the absolute age of a fossil
Answer:
D
Explanation:
Once researchers identified dna as the unit of inheritance, they asked how information was transferred from the dna in the nucleus to the site of protein synthesis in the cytoplasm. what is the mechanism of information transfer in eukaryotes?
A 35-year-old client has been diagnosed with hypertension. the client is a stock broker, smokes daily, and has diabetes. during a follow-up appointment, the client states that regular visits to the doctor just to check blood pressure (bp) are cumbersome and time consuming. as the nurse, which aspect of client teaching would you recommend?
In what organelle does photosynthesis take place in algae and plants? chloroplast chlorophyll mitochondrion ribosome lysosome
Photosynthesis in algae and plants takes place in the chloroplasts, which contain the pigment chlorophyll responsible for absorbing light energy. Other organelles mentioned have different functions in a cell.
Explanation:In both algae and plants, photosynthesis primarily occurs inside an organelle called the chloroplast. The chloroplast contains a pigment known as chlorophyll, which absorbs light energy and uses it to combine carbon dioxide and water into glucose, a form of sugar, and oxygen. This process enables plant and algae cells to convert sunlight into energy they can use.
Other organelles such as mitochondrion, ribosome, and lysosome have different functions within a cell. For instance, mitochondria are involved in energy production through a different process called cellular respiration. Ribosomes are sites for protein synthesis, and lysosomes play a significant part in breaking down waste materials within the cell.
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Which best describes sensory and motor neurons?
a) Sensory neurons process information from stimuli receivers; motor neurons process information from muscles or glands.
b)Motor neurons process information from stimuli receivers; sensory neurons process information from muscles or glands.
c)Motor neurons carry information from the sense organs to the central nervous system; sensory neurons carry processed information from the central nervous system back to muscles or glands.
d)Sensory neurons carry information from the sense organs to the central nervous system; motor neurons carry processed information from the central nervous system to muscles or glands
(E2020 says the answer is D)
don’t worry, I’m definitely not years late :0
Susan is a geological researcher measuring the rate of removal of phosphorous from sedimentary rock during the phosphorous cycle. What process is Susan investigating?
Answer:
Weathering
Explanation:
Weathering of rocks releases phosphorus in soil. The phosphorus is used by plants and reaches into animal bodies when animals feed on plants and plant products. Part of phosphorus present in soil is carried to water by surface runoff and is incorporated into sediments. Gradually, phosphorus becomes part of sedimentary rocks. Hence, removal of phosphorus from rocks occurs by the process of weathering.
Which is an essential commodity needed for the productive process?
Answer: its labor just got it right on apex
These are physical features shared by organisms with common ancestry; they may have the same structure, but different functions developmentally mature organisms.
Homologous structures
Homologous structures are physical features that can be found in very different animals, indicating that the organisms seem to be related or descent from a common ancestor. Homologous structures may have similar functions or form in different organisms. An example is the human eyes which are homologous to the eye bulbs located on the heads of blind creatures that reside in caves.
How does temperature change always move from regions of hot to regions of cold?
A) because hotter particles can not slow down
B) because colder particles have more potential energy
C) because kinetic energy is transferred in the collisions of particles
D) because this is the fastest, most efficient means of conducting thermal energy
Final answer:
Temperature change always moves from hot to cold regions because kinetic energy is transferred in the collisions of particles.
Explanation:
Temperature change always moves from regions of hot to regions of cold because kinetic energy is transferred in the collisions of particles. When two substances with different temperatures are in contact, particle collisions occur, resulting in a net flux of heat from the higher-temperature substance to the lower-temperature substance.
For example, if we have a body at a higher temperature (hot) and another at a lower temperature (cold), the particles in the hot body have a higher average kinetic energy. When these particles collide with particles in the cold body, some of the energy is transferred, resulting in a decrease in the average kinetic energy of the particles in the hot body and an increase in the average kinetic energy of the particles in the cold body. This transfer of energy continues until the two substances reach the same temperature.
In summary, the movement of heat from hot to cold regions is due to the transfer of kinetic energy in the collisions of particles.
PLEASE HELP ME WITH THIS, I NEED CORRECT ANSWERS ONLY! 20 PTS PLZ HELP
Match each type of lagoon with its description.
Tiles
facultative lagoon
anaerobic lagoon
aerobic lagoon
Pairs
It has no aerobic zone and is about 6 to 30 feet deep.
It has both an aerobic zone and an anaerobic zone, and is 4 to 8 feet deep.
It has a high amount of oxygen, and is about 5 feet deep.
Answer:
Anaerobic Lagoon: it has no aerobic zone and is about 6 to 30 feet deep
Facultative Lagoon: it has both an aerobic zone and anaerobic zone, and is 4 to 8 feet deep
Aerobic Lagoon: it has a high amount of oxygen and is about 5 feet deep
Explanation:
Under the influence of antidiuretic hormone (adh), _____ is produced. under the influence of antidiuretic hormone (adh), _____ is produced. urine containing more glucose bloody urine urine containing a lower concentration of urea more concentrated urine less concentrated urine
Under the influence of antidiuretic hormone (ADH), urine containing a lower concentration of urea is produced.
What is ADH?ADH, also known as vasopressin, is a hormone released by the pituitary gland that helps regulate water balance in the body.
When ADH is present in higher levels, it increases water reabsorption by the kidneys, resulting in reduced water loss through urine.
As a result, urine becomes more concentrated with a lower concentration of urea and other waste products.
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How does a protein kinase cascade amplify an intercellular signal?
A protein kinase cascade amplifies a signal through a series of phosphorylations, where activated enzymes phosphorylate others, massively amplifying the signal, ultimately leading to a variety of cellular responses.
A protein kinase cascade amplifies an intercellular signal by activating a series of enzymes, which in turn phosphorylate and activate additional enzymes in the pathway, resulting in the amplification of the signal from a single receptor to a large cellular response. This starts when a signal molecule binds to a receptor, which activates an enzyme that produces second messengers like cAMP or Ca²+. These messengers activate protein kinases that phosphorylate other proteins, which continue to amplify the signal through the cascade. In the end, the amplified signal often results in changes to gene expression, cell division, or other significant cellular responses.
One example includes the activation of Protein Kinase C (PKC) through G-protein-coupled receptors (GPCRs) which leads to substantial signal amplification. This amplification occurs as multiple G-proteins are activated by a single GPCR, and each of these can activate numerous effector proteins that generate second messengers, further activating more kinases. The downstream effects of such activation can include a variety of cellular responses.
How can a forest fire have both beneficial and harmful changes?
Answer:
Explanation:
fires help some plants release their seeds and it clears out the dead plants which allows the forest to grow more in the long run. What can be bad though is that fires can destroy the habitats for different species and as we saw with California, the smoke can make the air quality for breathing organisms very harmful.
Brian hamilton has , which is an inflammation of the tissues surrounding his elbow. this was caused by a sports injury.
Brian Hamilton may have acquired tendinitis or bursitis from a sports injury. Tendinitis results from repeated microtrauma, leading to inflammation. Bursitis is associated with inflammation of the bursa, resulting in joint pain and swelling.
Explanation:From the information provided, it seems Brian Hamilton could likely be suffering from bursitis or tendinitis, both conditions which involve inflammation of the tissues around the joints. This could have stemmed from a sports injury, given that such repetitive motions often lead to such issues.
Tendinitis occurs due to repetitive microtrauma to the tissues, leading to an inflammatory response. This is commonly experienced by athletes engaging in repetitive motion sports, such as golf or tennis, hence the names golfer's elbow or tennis elbow. Excessive stress can even lead to a tendon tearing loose, requiring surgical repair which is known to be painful and slow to heal due to a lack of abundant blood supply to the tendons.
On the other hand, bursitis is associated with inflammation of the bursa, a sac of lubricating fluid located between tissues such as bone, muscle, tendons, and skin, which decreases rubbing, friction, and irritation. When these bursae get inflamed, it leads to pain and swelling, stiffness in the joint, and tenderness in the area. In the elbow, this is known as olecranon bursitis or 'student's elbow.'
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The same genetic condition that causes sickle-cell anemia can also protect against:
The cells responsible for humoral immunity are the ________ cells.
Final answer:
B cells are the cells responsible for humoral immunity. They produce antibodies that defend against pathogens and toxins in the extracellular environment.
Explanation:
The cells responsible for humoral immunity are the B cells. B cells are a type of lymphocyte that mature in the bone marrow and produce antibodies, also known as immunoglobulins. These antibodies are involved in the body's defense against pathogens and toxins in the extracellular environment. The process of adaptive specific immunity that involves B cells and antibody production is referred to as humoral immunity.
The muscles of the _______ work together to support proper alignment and posture.
The muscles of the vertebral column, thorax, and abdominal wall, including deep core muscles, work together to maintain proper alignment and posture. Segmental muscles assist in stabilizing the vertebral column. Coordination among these muscles prevents fatigue and supports upright posture.
It is a complex job to balance the body on two feet and walk upright. The muscles of the vertebral column, thorax, and abdominal wall extend, flex, and stabilize different parts of the body's trunk.
The deep muscles of the core of the body help maintain posture as well as carry out other functions. These muscles include the external obliques, internal obliques, transversus abdominis, and rectus abdominis in the abdominal region, which work together to support proper alignment and posture.
Additionally, the posterior core muscles, such as the psoas major, iliacus, and quadratus lumborum, play a key role in stabilizing the body and maintaining posture.
The segmental muscles, including the interspinales and intertransversarii muscles, are crucial in the stabilization of the vertebral column.
Overall, these muscle groups work in concert, receiving electrical impulses from the brain, to ensure that no single muscle group becomes fatigued too quickly, thus maintaining proper body posture.
Asexual reproduction results in offspring that are genetically identical to their parent. what type of cell process commonly occurs to generate this type of offspring?
Asexual reproduction involves methods like mitosis, binary fission, and budding to produce offspring that are genetically identical to the parent. These processes result in genetically identical clones, with mitosis occurring in eukaryotic organisms and binary fission in prokaryotic organisms like bacteria.
Asexual reproduction results in offspring that are genetically identical to their parent. The cell process that commonly occurs to generate this type of offspring is usually one of the following methods: mitosis, binary fission, or budding. In mitosis, a single cell duplicates its DNA and then divides into two separate cells, each with the same DNA as the original cell, thus creating two identical offspring.
Binary fission is similar but is primarily seen in prokaryotic organisms like bacteria, where the cell splits into two identical daughter cells. Budding involves a new organism developing from an outgrowth or bud on the parent due to cell division at one particular site. These offspring will then detach from the parent once they are capable of independent growth. This manner of reproduction ensures continuity of genetic material as the offspring are clones of the parent organism.
Asexual reproduction is advantageous in stable environments where the parent's genetic traits are well-suited for survival. Since the offspring are exact genetic copies, they inherit the parent's adaptations. However, it doesn't provide genetic diversity, which can be a drawback in changing environments.