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olga2289 [7]
3 years ago
14

What mineral is released within muscle cells to trigger contraction?

Biology
1 answer:
astraxan [27]3 years ago
3 0

Answer:Troponin

Explanation:

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PLZ hELp!!!!!!!!!!!!
lions [1.4K]

Answer:

direct op means count one by one .

3 0
3 years ago
When two experiments are identical except for one variable, the experiment is called a(n) _____. controlled experiment variable
DochEvi [55]
It is a controlled experiment as everything is the same apart from one variable
7 0
3 years ago
Why are the large finches now living on the galápagos islands different from the original source population from a nearby islan
Softa [21]

Answer:

The reasons are explained below -

Explanation:

The large finches living on the Galapagos islands are different from the original source population from a nearby islands because of the following reasons -

  • A natural selection favored only the large finches because they are more fit to the current environmental conditions.
  • A genetic drift has been occurred in the two populations living on the nearby islands.
  • Due to the separation of habitat on both the islands, the gene flow between the two islands is reduced.

All the above listed reasons are responsible for the difference in the finches found on the two islands.

3 0
2 years ago
1. What causes the autorhythmicity or action potentials of the nodal cells? a. A decrease in chloride permeability b. A gradual
Sveta_85 [38]

Answer:

The correct answer will be option-C

Explanation:

The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.

The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.

This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.

Thus, Option-C is the correct answer.

5 0
3 years ago
What other molecules are carbon atoms in after the chemical change?
Ilya [14]

Answer:Carbon dioxide molecules

Explanation:

5 0
3 years ago
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