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Nikitich [7]
4 years ago
12

What causes the myosin head to move into the 'cocked' position after it is released from actin? Group of answer choices ATP bind

ing to myosin. ATP hydrolysis into ADP and Pi on the myosin head. ADP and Pi release from the myosin head Ca2+ binding to troponin.
Biology
1 answer:
kupik [55]4 years ago
3 0

Answer:

Explanation:

The molecular and cellular mechanisms and processes that explain muscle contraction in striated muscle occur in the myofibril sarcomere. Their understanding depends on the organization's understanding of the structure of the sarcomere. In an imaginary experiment we first assemble an ideal sarcomere.

Remember that the myofibril is a set of cylindrical compartments that are located next to each other, constituting an elongated cylinder. Each of these cylinders is a sarcomere and borders its neighbor on a line or band called, line or band z.

On each side of the z line, thin cylindrical filaments that are actin filaments are inserted. Each actin filament is formed by a double strand of actin molecules that are rolled over each other. In this organization, actin is called actin F.

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Humans contract bacterial infections such as tuberculosis or syphilis. what is this ecological relationship called?
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Analyze the result of a cross between two organisms that are both heterozygous for two different genes (AaBb) use a Punnett squa
krok68 [10]
(1) All the genotypes are as follows: AABB, AaBB, AABb, AaBb, aaBB, aaBb, AAbb, Aabb, aabb.

(2) Assuming that Aa is dominant and Bb is recessive, there will be 9 phenotypes with both A and B allele dominant (i.e. AaBb, AABb); there will be 3 phenotypes with just the A allele dominant (i.e. Aabb, AAbb); there will be 3 phenotypes with just the B allele dominant (i.e. aaBb, aaBB); and there will be 1 phenotype with both alleles recessive (i.e. aabb). The phenotypic ratio in this case is 9:3:3:1.

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4 0
4 years ago
Transcribe the following DNA into mRNA<br><br> T-A-C-C-G-T
Alina [70]

A-U-G-G-C-A

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4 0
3 years ago
Select all of the examples that represent biological evolution.
Pavel [41]

Answer:

The correct answer is - option 2, 3, and option 5.

Explanation:

Biological evolution is the change in genetic level of an individual population that is developed or inherit over a period of time and several generations. Changes can be minute, large, can be identified or not noticeable.

In the given question some of the examples of biological evolution are given such as O genotype individuals increases due to the reduction in population size in the small human population, similarly, one species diverged into two different species on the basis of the adaption they developed in island.  Sickle cell anemia frequency is also is an important example of the as it decreases over time.

Thus, the correct answer is -  option 2, 3, and option 5.

3 0
3 years ago
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