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Anna35 [415]
2 years ago
13

Which is the last structure to contact sperm before it leaves the body?

Biology
1 answer:
Sladkaya [172]2 years ago
5 0

Answer:

If you're on EDGE 2021, it's NOT D.

I think it's A.

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Which of the following is true of anabolic reactions? View Available Hint(s) Which of the following is true of anabolic reaction
puteri [66]

Answer:

Anabolic reactions use ATP and small substrates as building blocks to synthesize larger molecules.

Explanation:

Anabolic reactions are part of metabolic pathways that occur inside the living cells. Anabolic reactions always form complex molecules from simpler substances. The formation of glucose from relatively simpler CO2 and H2O during the Calvin cycle is an example of the anabolic pathway. During anabolic pathways, the metabolic energy of ATP hydrolysis drives the endergonic reactions. Therefore, anabolic reactions consume ATP. Calvin cycle uses the ATP produced during light reactions of photosynthesis.

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What does the theory of evolution contribute to conservation biology?
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The theory of evolution provides a number of insights:

-it tells us how the species are related
-it tells us how the species and populations react to the changes in their environment

With this knowledge, the scientists can predict how the species will react to the potential changes and support the positive changes (provide a good environment for the animals for example) <span />
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The hip bone of a whale and the appendix of a human are referred to as ______because they have little current importance but wer
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C. vestigial structures
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2 years ago
AB blood type in humans as well as, red and white striped flowers are examples of this type of inheritance pattern.
Sati [7]

Answer:

The inheritance pattern is CODOMINANCE

Explanation:

Codominance is a type of non-mendelian inheritance i.e. does not follow Mendel's principles of inheritance, in which two alleles of a gene are both dominant, hence, they are both simultaneously expressed in that gene.

Examples or cases of codominance are the AB blood type in humans where alleles A and B are both expressed in the gene. Also, red and white striped flowers in certain plants is an example of codominance as red and white alleles are both expressed.

3 0
2 years ago
Describe the process of skeletal muscle contraction by assembling the following 10 events in the proper order in paragraph form.
balu736 [363]

5) muscle fiber is stimulated at the neuromuscular junction triggering an action potential  

7) APs travel down the T-tubules to the sarcoplasmic reticulum  

Released acetylcholine (due to action potential within motor neuron) from the motor neuron initiates depolarisation within the sarcolemma, which is spread through the muscle fibre via T tubules.

8) in response to an AP, calcium ions are released into the cytosol/space around the myofibrils

Depolarisation causes the sarcoplasmic reticulum to release calcium ions necessary for the contraction

3) calcium ions bind to the T and T system

1) T and T system undergoes a conformational change, exposing the myosin binding sites on actin  

6) myosin head/cross-bridges bind to actin

The binding sites for the myosin heads located on actin, are covered by a blocking complex (troponin and tropomyosin) that can be unblocked by the calcium binding

2) myosin heads/cross bridges bind to actin and flex, shortening the sacromere  

4) actin filaments are pulled toward the center of the sacromere, shortening the muscle fiber  

As the individual sarcomeres become shorten the muscle fibres as a whole contracts

10) myosin head continues to attach, flex, release, extend, and reattach as long as calcium ions are present

9) calcium ions actively transported into the sarcoplasmic reticulum  

Relaxation of a muscle fiber occurs when a Ca ions are pumped back into the sarcoplasmic reticulum .

3 0
2 years ago
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