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loris [4]
3 years ago
11

What occurs when the heads of myosin contact actin?

Biology
1 answer:
Elza [17]3 years ago
6 0

When myosin head bind to the actin, it will form a cross bridge and causes a power stroke to occur. It will hydrolyse the ATP to ADP + Pi in the ATPase of the myosin head and the myosin head will detached from actin and tilt back to its original position. Hence the sarcomere will shorten

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How does temperature change affect surface tension
qwelly [4]
All depends on climate !!
4 0
3 years ago
Which substance is a nucleic acid ?
andrew-mc [135]

Your answer is RNA.

Nucleic acid can be defined as the biopolymers  which is known to be the most essential for all the life forms on the earth.

Nucleotides that are present in the nucleic acid are the monomers that is made up of 5 carbon sugar, nitogenous base, phosphate group.

If the sugar is ribose sugar then it is known as Ribonucleic acid. They are found in all the living components as the genetic material that transfers the information from parents to their children.

:)

7 0
3 years ago
Read 2 more answers
In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is
Agata [3.3K]

Answer:

The question is incomplete, it lacks the main questions, those questions are:

a. What is the genotype for black chickens?

b. What is the genotype for white chickens?

c. What is the genotype for erminette chickens?

Explanation:

This question involves a gene coding for feather colour in some birds, in which the black allele (B) and white allele (W) is involved. According to the question, the gene coding for feather colour exhibits co-dominance i.e. both the black (B) and white (W) allele are expressed in a heterozygous state (BW) to form an erminette phenotype.

Hence, if the neither alleles is dominant or recessive over the other. The black phenotype will only be expressed when the genotype is BB.

The white phenotype will only be expressed when the genotype is WW

The combination of both alleles which results in the simultaneous expression of both in the erminette phenotype, will be BW genotype.

8 0
3 years ago
please help with all of them,, i will be giving “thanks” && brainliest:) i’m bugging you PLEASE HELP ASAP
Natalka [10]

Answer:

22. C

23. C

24. Not clear, maybe 18%

25. Left ventricle, because according to the graph nearly 50% of the organ contains mitochondria, more than the left atrium.

Explanation:

22. Active transport requires cell's energy to move molecules, usually in the form of ATP.

23. This is a trick question, you might think it is diffusion or osmosis, but is is exocytosis. Diffusion and osmosis don't require vesicles for transport. It isn't endocytosis, because that is moving molecules inside the cell. The question asks for moving out the cell.

24. Look at the chart, it is less than 20, but more than 10 and more than halfway. I am not sure exactly the percentage, I would approximate it to be 18%.

25. Most likely left ventricle.

please give thanks :)

7 0
3 years ago
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trasher [3.6K]
Do stones for her drains and little stoppers to keep leaves and dirt from entering the water that goes to diff plants and sewers
8 0
3 years ago
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