Tag: muscle tissues

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Questions Related to muscle tissues

Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

A human cell which contains a large amount of RER, many golgi bodies and a prominent nucleolus is most likely a

  1. Muscle cell

  2. Secretory cell

  3. Nerve cell

  4. RBC
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A cell with abundant rough endoplasmic reticulum, numerous golgi bodies, and a prominent nucleolus is heavily involved in protein synthesis and secretion, making it a secretory cell.

Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

What is sarcomere ?

  1. Part between two H-lines

  2. Part between two A-lines

  3. Part between two I-bands

  4. Part between two Z-lines
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The sarcomeres are fibrous protein filaments that slide past one another when the muscle contracts or relaxes. It is basically the region between two Z-bands.
So, the correct answer is 'Part between two Z-lines'.
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Multiple choice zoology tissue level of organisation muscle tissue structure of protein muscle tissues

The calcium calmodulin complex is formed during contraction which of the following muscle fibres?

  1. Skeletal muscles fibre

  2. Cardiac muscles fibre

  3. White muscles fibre

  4. Smooth muscles fibre
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Unlike skeletal and cardiac muscles which use troponin to bind calcium, smooth muscles rely on the calcium-calmodulin complex to activate myosin light chain kinase for contraction.