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Firdavs [7]
2 years ago
15

Cross bridge formation between myosin heads and actin molecules is caused by the elevation of calcium ion concentration in the c

ytosol. During rigor mortis, this elevation of calcium ion concentration in the cytosol is permanent because ________.
Biology
1 answer:
almond37 [142]2 years ago
3 0

Answer:

sarcoplasmic reticulum deteriorates and ATP production is stopped

Explanation:

Rigor mortis is the third stage of death characterized by stiffening of joints and muscles in body. The stiffening occurs because muscles are not able to return to the relaxed state. There are two reasons for rigor mortis, depletion of ATP and increase in calcium concentration in cytosol. Due to these factors the actin-myosin crossbridge is not able to break and the muscles remain in contracted state.

Sarcoplasmic reticulum deteriorates and calcium is released into the cytosol. Sarcolemma ( covering of muscle fiber ) also breaks down releasing extra calcium into the cytosol. Calcium is responsible for formation of actin-myosin cross bridge and when its concentration increases the bridge is formed continuously leading to stiffening of muscles and joints.  

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The kind of organism that he found will be Plant.

<h3><u>Explanation:</u></h3>

The cell structure of plants and animals differ in many ways. The cell structure of plants contains a cell wall, the Central Vacuole, Plastids, Chloroplasts, etc. The cell structure has a rigid and strong layer known as cell wall. This forms the outermost layer of the cell.

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7 0
2 years ago
The notable hardness of bone is attributed to ________. the notable hardness of bone is attributed to ________. the presence of
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6 0
2 years ago
What evidence links echinoderms, hemichordates and chordates to the same evolutionary lineage?
sleet_krkn [62]

Answer:

Embryological evidence

Explanation:

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5 0
2 years ago
A body of granite was found to underlie sandstone. pieces of sandstone were found in the granite. which is younger, the granite
serg [7]
It is obvious that the sandstone is older than the granite. This is because the sandstone had to already exist when the granite formed from molten rock, as some of the sandstone was captured within the layer of hardening granite. The geological principle of inclusions supports this conclusion.<span> Inclusions, in this case the sandstone, are always older than the rock they are found in. </span>
3 0
2 years ago
An experiment was conducted to investigate how temperature affects cellular respiration. The results are shown above. At what te
Anna007 [38]

Answer:

C

Explanation:

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7 0
2 years ago
Read 2 more answers
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