The cardiovascular system is also known as the ____ system
Answer:
it's also know as the circulatory system
Why does weathering take so much time?
Weathering takes time due to mechanical and chemical processes, climate factors, and the type of rock or mineral being weathered.
Explanation:Weathering takes time due to the various processes involved in breaking down rocks and minerals. Mechanical weathering, such as frost wedging and root growth, can physically break apart rocks, while chemical weathering, like acid rain and oxidation, can chemically alter their composition.
Another factor is climate, as the amount of rainfall, temperature fluctuations, and freeze-thaw cycles greatly impact the rate of weathering. For example, in areas with frequent rainfall and high temperatures, weathering occurs more rapidly. Lastly, the type of rock or mineral being weathered also affects the speed of the process. Soft and porous rocks are more easily weathered compared to hard and dense rocks.
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In an ecosystem, a population can be defined as
A.
all individuals of a species born in a specified month in every region of the world.
B.
all individuals of a species that exist or have existed in a given place.
C.
all the individuals of a species that exist together at a given place and time.
D.
all the individuals of every species at a given place and time.
Answer:all the individuals of a species that exist together at a given place and time.
Explanation: I Did it on study island.
Which passageway connects the third and fourth ventricles?
Answer:
Cerebral Aqueduct
Explanation:
In two to three paragraphs, trace the path of blood flow through the heart. Be sure to name all of the heart chambers, valves, arteries and veins that the blood will travel through. Also describe the blood in terms of oxygen content all along its path through the heart.
Answer:
no someone is trying to hurt me pls help
Explanation:
Look back at your answer to the previous question for tube C. Revise your answer to explain why there are more organisms at the top of tube C than at the bottom.
Answer: Tube C contains facultative anaerobes.
Explanation: They can survive with or without oxygen because they can make ATP through anaerobic and aerobic processes. Many facultative anaerobes prefer oxygenated environments, but they can adapt to low-oxygen conditions. This preference is why there are more organisms near the top of the tube.
The reason why more organisms are at the top of tube C than at the bottom is they can survive with or without oxygen because they can make ATP through anaerobic and aerobic processes. Many facultative anaerobes prefer oxygenated environments, but they can adapt to low-oxygen conditions. This preference is why there are more organisms near the top of the tube.
What adaptations do organisms have for dealing with low oxygen levels?In summary, given the stable presence of very low O2 levels in the minima, the primary adaptations of animals living within them are those that support aerobic metabolism by giving the animals remarkable abilities to extract O2 from water.
What animals can survive in low oxygen conditions?New research shows that mole rats can survive for hours in extremely low-oxygen environments, and can live for as long as an astonishing 18 minutes without any air at all.
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Nicotiana attenuata is subject to damage by both generalist and specialist herbivores. The production of nicotine is not effective against one specialist, M. sexta. If an individual of N. attenuata is being eaten by both M. sexta and a generalist herbivore, what would you expect to happen?
Phenothiazines block neurotransmitter dopamine molecules from attaching to synaptic receptor sites. True or False
Answer:
True
Explanation:
Phenothiazines can block dopamine receptor interactions in different brain regions including the hypothalamus, the basal ganglia, and the limbic system, and thus interfer with central and peripheral nervous systems. Phenothiazines can also block serotonin and noradrenaline receptors
Answer:
The correct answer is "True".
Explanation:
Phenothiazines are a type of organic compounds used to treat neurological disorders such as schizophrenia and psychotic disorders. Phenothiazines block neurotransmitter dopamine molecules from attaching to synaptic receptor sites, in the basal ganglia, the hypothalamus, and the limbic system. This molecular effect leads to sedation, which relieves the neurological disorders.
a gas stove is being used to boil water is what energy transformation
A) Chemical energy from the gas is transformed into thermal energy
B) Thermal energy from the gas is transformed into chemical energy
C) Electrical energy from the stove is transformed into light energy
Answer:
A
Explanation:
Chemical Energy, I did the test
Final answer:
The energy transformation that occurs when a gas stove is used to boil water is that chemical energy from the gas is transformed into thermal energy.
Explanation:
The energy transformation that occurs when a gas stove is used to boil water is option A) Chemical energy from the gas is transformed into thermal energy. When the gas stove is turned on, the natural gas undergoes combustion, which is a chemical reaction that releases thermal energy in the form of heat. This heat is transferred to the water, causing it to increase in temperature and eventually boil.
When loading samples into an agarose gel
a. add 6x dye to ALL samples and pipet the SAME total volume for each well.
b. use the SAME micropipetter tip for ALL samples.
c. add control DNA to ALL your samples.
d. load ALL samples BEFORE electrophoresis buffer is added fully over the gel in the electrophoresis rig.
e. always go to the second stop of the micropipette to fully dispense ALL of the sample into its well.
Final answer:
When loading samples into an agarose gel, a) add 6x dye to all samples, use a unique micropipette tip for each sample, ensure that the electrophoresis buffer covers the gel, and press the micropipette plunger to the first stop only.
Explanation:
When loading samples into an agarose gel, several steps need to be carefully followed to ensure a successful electrophoresis. First, it is essential to a) add 6x dye to all samples and pipet the same total volume for each well to allow for consistent tracking and sinking of the sample into the well. Each sample should be dispensed using a different micropipette tip to prevent cross-contamination. The samples should be loaded only after the electrophoresis buffer has been added fully over the gel, ensuring that the DNA will move correctly towards the positive electrode once the current is applied. Finally, when using the micropipette, be sure to press the plunger only to the first stop when dispensing the sample into its well to avoid damaging the gel.
Bodies of animals had been ____ over time by the conditions in their environments resulting in different forms they found in different locations
A) constant
B) shaped
Virus structure includes bio molecules such as proteins and nucleic acids.__________ If false, why?
Answer:
.
Explanation:
Virus structure
1. Nucleic acid
2. Capsid
3. Envelop
Answer:
True !
All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.
Drag each tile to the correct location.
Match each type of plant to the correct image.
If anyone could give me the correct answer I'd really appreciate it ! :)
The correct match of the plant to its image is:
A. The yellow flowers are angiosperm.
B. The pines in the second image are gymnosperm.
C. The green small grass is bryophytes.
D. The ferns' small leaves are pteridophytes.
What are angiosperms?
Angiosperms are the class of flowering plants whose seeds are present inside the fruit. They are considered the largest group of plants and contribute to 80% of green plants.
Bryophytes are the oldest plants like mosses and liverworts and pteridophytes are the fern plants and the gymnosperms are the one that bears seeds.
The image is attached below.
Thus, the match of the plant to its image is:
A. The yellow flowers are angiosperm.
B. The pines in the second image are gymnosperm.
C. The green small grass is bryophytes.
D. The ferns' small leaves are pteridophytes.
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Which type of organism is most likely to undergo sympatric speciation by polyploidy?
Answer:
Plant species that are capable of self-pollination and some degree of asexual reproduction
Explanation:
Complete Question -
Which type of organism is most likely to undergo sympatric speciation by polyploidy?
plant species that are capable of self-pollination and some degree of asexual reproduction
animal species with poor dispersal abilities whose populations exist in widely separated, small patches of habitat
animals, particularly those with highly selective females that select mates based on exaggerated traits
plant species that are incapable of asexual reproduction and do not self-pollinate
Solution -
Sympatric speciation occurs when a group of organisms living in a habitat become reproductively isolated from each other. It generally occurs through polyploidy in which offspring with more than the normal number of chromosomes are produced. However, a normal individual exhibit diploidy (i.e with two copies of each chromosome). Individuals with different number of chromosomes cannot mate thereby creating reproductive isolation. Sympatric speciation occurs in plants because they can self-fertilize which is not the case with the animals.
Thus, correct answer is "Plant species that are capable of self-pollination and some degree of asexual reproduction"
Compare and contrast cytokinesis in animal and plant cells.
Answer:
Cytokinesis occurs in both animal and plant cells. It is the division of the cytoplasm, which is the final stage of the cell cycle. In animal cells, the cell membrane pinches together around the middle of the cell to divide the cytoplasm. In plant cells, the process is a little different. Because the cell wall of a plant cell is rigid, it does not pinch in like the more flexible cell membrane in animal cells. Instead, a structure called a cell plate forms across the middle of the cell. The cell plate moves outward and eventually fuses with the cell membrane to divide the cell into two cells. Then, new cell walls form around the cell membranes.
Hope this helps : )
Explanation:
Cytokinesis in animal and plant cells contrasts as follows:
In animal cells, the cytokinesis process involves the formation of a division groove on the cell surface that extends and deepens until the cell divides in two.
This is due to the contraction generated by the contractile ring, composed of filaments of actin, myosin, and other structural and regulatory proteins.
As the ring narrows, the groove will be larger and the cytoplasm will be strangled until it reaches the point of cell separation. Eventually, the two daughter cells are formed.
On the other hand , cytokinesis in plant cells takes place after the formation of a separating septum known as a phragmoplast, which arises from the accumulation of vesicles that come from the Golgi apparatus and that contain material from the cell wall.
Once the phragmoplast comes into contact with the cell walls, the septum will form in the middle of the cell, making cell division possible.
Comparisons between both cytokinesis:
In animal cells, cytokinesis occurs by strangulation, while in plant cells it occurs by septation.The plant cell uses its vacuoles to increase its volume against cytokinesis while the animals do it through synthesis, which causes a greater energy expenditure.During cytokinesis the plant cells do not lose width in the center while with the animal cells due to strangulation they narrow.Therefore, we can conclude that cytokinesis is a cellular process whose purpose is the division of the stem cell's cytoplasm between daughter cells, it is not the same in animal and plant cells due to the physiological characteristics of each one.
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Imagine that you want to breed a species of rose that has a wonderful smell. You have many different types of roses, but none of the individual roses has the wonderful smell that you want. What is the best way to go about breeding a pure species rose with the trait that you want?
To breed a rose with a specific aroma when none of the present roses have it, you would use Mendel's methods of cross-pollination and repeated selection for the desired trait (i.e., the aroma) across several generations. Also, keep in mind that even if the aroma isn't prominent in one generation, it can still reappear in the following generations.
Explanation:To breed a rose species with a wonderful smell, even if none of the individual roses currently have that trait, selective breeding strategies - similar to the ones used by Gregor Mendel in his experiments with peas - can be employed. First, we need to identify roses that have any trace of the desired fragrance. Even if it's not the exact smell we want, these roses contain at least some of the needed genes. Then, following Mendel’s methodology, we would cross-pollinate these roses by transferring pollen from one flower to another to avoid self-fertilization. Over time, this approach will hopefully help to cultivate a stronger manifestation of the desired fragrance.
Mendel used a similar approach with seven distinct traits in peas, including flower color and seed shape, perform several rounds of hybridizations, and watched how these traits passed onto the next generation. Using Mendel's methods for breeding roses, one would continue to select the offspring roses that show the strongest expression of the desired trait (the wonderful smell) and breed them. This process would be repeated for several generations until the roses consistently produce the aroma desired.
One important point from Mendel’s work was the concept of concealed traits. Even if a trait does not appear in a generation (just as white flowers disappeared in one of Mendel's cross-breeds but later reappeared), it does not mean it has been lost. Hence, even if the wonderful smell does not appear strongly in some generations of roses, continued selective breeding can still foster its emergence.
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Why do rocks on the sides of mountains weather faster than rocks on level ground?
Answer:
Rocks at sea level can be weathered by ocean waves.
Explanation:
Slope The steep sides of mountains and hills make water flow down them faster.
Mitotic cell division is considered asexual because: Please choose the correct answer from the following choices, and then select the submit answer button. the daughter cells receive DNA from one parent cell, and the daughter cells are genetically identical. this form of cell division is most similar to binary fission. the daughter cells formed are genetically different. the daughter cells get different mixes of maternal and paternal chromosomes.
Answer:
Mitotic cell division is considered asexual because: the daughter cells get different mixes of maternal and paternal chromosomes.
Explanation:
Which of the following are not biotic or abiotic factors in an ecosystem? (choose one) answer ASAP, I really need help
A. Water and air
B. rocks and energy
C. Plants and animals
D. Cultural components
Answer:
b
Explanation:
i cant really explain it but thats the right answer
In an ecosystem, biotic factors are living organisms, and abiotic factors are non-living elements that shape the environment. Cultural components are not considered biotic or abiotic factors.
Explanation:
In an ecosystem, both biotic and abiotic factors play important roles in shaping the environment. Biotic factors refer to all living organisms, such as plants and animals, that directly interact with each other. Abiotic factors, on the other hand, are non-living elements like water, air, rocks, and energy that impact the ecosystem.
In the given options, option D, 'Cultural components', are not considered biotic or abiotic factors in an ecosystem. Cultural components are human creations, such as language, customs, and beliefs, and they do not fall within the scope of biotic or abiotic factors in the natural environment.
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Rolling pizza dough into a flat circle is a
Answer: flat circle , what else is there to the question.
Explanation:
What are two ways nonliving things could affect
yellow-rumped warblers?
Answer:
the nonliving things that could affect yellow-rumped warblers is the temperature and humidity of the atmosphere.
Explanation:
Yellow-rumped warblers is a type of bird which is found in central and North America. Temperature and humidity has a great impact on yellow-rumped warblers. They migrate to central america when the winter season arrived because the climate of central and north america is warm and wet due to more rainfall. This bird does not tolerate the extreme low and high temperature so that's why they migrate to warm areas in the winter.
Which must be true for two organisms to be considered the same species?
What glycolysis product is transported into the mitochondria?
Answer:
This question lacks options, options are:
A) ATP
B) NADP
C) Pryuvate
D) glucose
E) acetyl-CoA.
The correct answer is C) Pyruvate.
Explanation:
Pyruvate is a very important compound for the cell since it is a key substrate for energy production and glucose synthesis (neo-glycogenesis), that is, pyruvate is the end product of glucose breakdown in glycolysis. Before entering the mitochondria, it can be converted to lactate, through an anaerobic reaction (in the absence or under oxygen supply) of low performance in energy production, when the main pathway is interfered with. It can also be converted to the amino acid alanine. Within the mitochondria, it can be transformed, by pyruvate dehydrogenase (PDH), into acetyl-coenzyme A (acetyl-CoA), the entry point (substrate) of the Krebs cycle. In addition, by means of pyruvate carboxylase, it can be transformed into oxalacetate, which constitutes the first step in neoglycogenesis.
Answer:
Two Pyruvate, two NADH, and two ATP molecules are the products of the glycolysis which are sent to the mitochondria of the cell.
Explanation:
Glycolysis is a first step of cellular respiration in which glucose molecule is broken down and producing pyruvate, NADH and ATP molecules. These three products are sent to the mitochondria of the cell for further energy production for the cell. Mitochondria is also called power house of the cell where energy is produced in the form of adenine tri phosphate with the addition of oxygen which comes from the process of breathing.
If a skeletal muscle is no longer able to make enough ATP, then: A. the muscle will be unable to shorten. B. actin and myosin in the sarcomeres are in the unbound state. C. there will be low levels of acetylcholine at the motor endplate. D. actin and myosin in the sarcomeres will remain bound.
What happens at the junction between a nerve and a muscle to initiate muscle contraction?
Answer:
What we know as the motor plate or motor unit is the union between the nerve or rather the nerve terminal and muscle fiber.
When the nerve fiber enters a depolarization, thus generating an action potential in its membrane, conducting electrical energy along it triggers certain "communicators" to be released at the union with the muscle (motor unit) that will indicate the muscle to contracting, these "communicators" are called neurotransmitters and an example of them is acetylcholine or Ach, when released it binds to the specific receptor for the neurotransmitter of muscle tissue, thus generating it to contract the sarcoplasmic reticulum and increase intracellular calcification levels to carry out the shortening of the muscle fiber (muscle contraction).
Explanation:
Muscle fibers are classified into three large groups according to their function and physiology, we have smooth and striated muscle and, on the other hand, specialized or cardiac muscle that has a very particular characteristic, unlike the others, which is that it is autonomous. say that it has another mechanism to be induced to contraction and that it could control muscle contraction without the presence of a nerve or nerve terminal, this is because the cardiac muscle is essential for our life to contract to generate the pumping our blood and it is very risky to depend on a nerve terminal.
On the other hand, the nerves that have a myelin sheath envelope will drive their exciting stimulation to the muscle or muscle fiber more quickly since it is the saltatory method.
The nerve terminals act at the level of the intracellular concentrations of calcium of the muscular cells as we mentioned above, that is why a muscular cell when viewed under the microscope presents a REL (superplastic smooth endoplasmic reticulum) that acts as a calcium reserve for muscle contraction. Calcium is responsible for dislodging the topoisomerase from the active site where myosin and actin bind to generate the shortening of the Z lines.
Which chromosomes represents an alteration known as a deletion
A chromosomal deletion is when a segment of DNA is lost from a chromosome, often leading to genetic disorders such as Cri-du-chat syndrome. These deletions usually arise from unequal crossing over during meiosis, which can result in one gamete with a missing chromosomal segment.
Chromosomal deletions occur when a segment is removed from a chromosome, which can lead to a variety of genetic disorders. The chromosomal basis of inherited disorders includes conditions like Cri-du-chat syndrome, where a deletion on chromosome 5 leads to distinctive clinical features. Chromosomal alterations such as deletions are commonly a result of unequal crossing over during meiosis.
Chromosomal duplications, insertions, inversions, and translocations are other types of alterations that can have significant effects on an individual's phenotype. For example, during meiosis, one gamete might receive a chromosome with a duplicated segment while another gamete receives a chromosome with a deletion, hence altering the genetic information passed to offspring. This can result in phenotype variations and, in some cases, genetic disorders.
The ________ of a sperm contains the enzymes essential for fertilization. The ________ of a sperm contains the enzymes essential for fertilization. acrosomal cap flagellum middle piece neck None of the answers is correct.
Answer:
head
Explanation:
because the head fuses with the egg
Which factor has the least effect on the weathering of a rock? *
A) Composition of rock
B) Exposure of the rock to the atmosphere
C) The number of fossils found in the rock
D) Climatic conditions
Answer: I believe it’s C!
Explanation: fossils inside a rocks should have little to no effect on the weathering of a rock. I may be wrong though so forgive me lol
Weathering is a biological, chemical, or physical process that dissolves the Earth's surface minerals and rocks. It might be caused by temperature, acids, water, fumes, and so forth.
The factor that has the least effect is:
The number of fossils found in the rock is option C.
What are the factors that affect weathering of rocks?The rate and kind of weathering are affected by rock composition because the components of the rocks can enhance or reduce the rate of weathering.As air, water, heat, and humidity impact the rocks and minerals, atmospheric conditions and climate play a significant role in rock weathering.Fossils discovered inside rocks have no connection to the weathering process.Thus, the correct option is C.
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Lupus, a condition in which the body attacks its own cells, is an example of
Describe the function of the cilia in the respiratory tubes
Answer:
The cilia are found in the lungs, respiratory tract and middle ear. These cilia have a rhythmic waving or beating motion. They work, for instance, to keep the airways clear of mucus and dirt, allowing us to breathe easily and without irritation.
I hope it helps you.
Explanation: