All categories

3 years ago

Which of the following is the smaller amount?

Biology

1 answer:

viva [34]3 years ago

8 0

Answer:

A) the concentration of calcium ions in the sarcoplasm of a resting muscle

Explanation:

Sarcoplasmic reticulum is a system of the membranous sac that is present around each myofibril and is filled with calcium ions. When muscles are in the resting stage, calcium ions are stored in the sarcoplasmic reticulum.

As the muscle action potential triggers change in voltage-gated calcium ion channels of the sarcoplasmic reticulum, the channels are opened to release the calcium ions in the sarcoplasm. Increased calcium ion levels in sarcoplasm make the muscle fibers to contract.

Removal of acetylcholine from the synaptic cleft ends the production of muscle action potential and calcium ions are moved back from the sarcoplasmic reticulum.

Hence, lower levels of calcium ions are maintained in sarcoplasm when the muscles are in the resting stage.

You might be interested in

I do not fully understand the question

maxonik [38]

Answer:

Explanation:

3 0

4 years ago

Suppose that brown hair (B) is dominant over blonde hair (b) and Curly hair (C) is dominant over straight

umka2103 [35]

Answer:

I think it's BBcc X bbcc

Explanation:

7 0

3 years ago

Applying Osmosis

lesantik [10]

Answer:

A . hypotonic solutions , water flows into the cell

B. hypertonic solutions , water flows from cell to into the solution ...

C . isotonic solution , no net movement of water

plz mark my answer as brainlist plzzzz vote me also hope this helps you ....

6 0

3 years ago

Which statement concerning viral structure is true? View Available Hint(s) Which statement concerning viral structure is true? S

prisoha [69]

Answer:

Spikes are found on some viruses. They are very consistent in structure and can be used for identification.

Explanation:

Viruses have varied structures. A virus particle is composed of DNA or RNA that is inside a protective layer of protein called a capsid. The shape of the capsid can vary from one type of virus to another. The capsid is composed of proteins that are encoded by viral genes within the virus genome.

3 0

3 years ago

Feather color in Christmas Parrots is codominant. You have 2 Christmas Parrots each red and green. What are the percentages for

MatroZZZ [7]

Answer: The percentage of each phenotype to be expressed is *50%* each

Explanation: In codominance, two alleles for a particular trait are equally expressed in an individual carrying it, neither an allele is dominant or recessive over the other. In this case the individual shows the two traits of the allels.

Furthermore, when 2 Christmas parrot are crossed with red and green color in an homozygous codominant trait the heterozygous F1 generation will either be red with traces of green or green showing traces of red.

If parrot 1 (Red) is represented as PR PR and parrot 2 (Green) is PG PG the cross between them will give PR PG therefore, the individual shows both traits.

3 0

4 years ago