Tag: structure of protein

Questions Related to structure of protein

Which of the following statements is incorrect ?

biology animal tissue muscle tissue structure of protein muscle tissues

  1. Smooth muscles are ,found in urinary bladder, alimentary canal and genital

  2. A striated muscle Is a syncylium Le., a multinudeate structure

  3. The cytoplasm of striated muscle is called endoplasm

  4. The plasma membrane and ER of striated muscles are called sarcolemma and sarcoplasmic reticulum respectively

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Correct Option: A
Explanation:
Smooth muscles are found in the urinary bladder, alimentary canal, and genitals. They are involuntary muscles and have a major role in the transport of substances.
So, the correct answer is ' Smooth muscles are found in urinary bladder, alimentary canal and genital'.

Largest smooth muscle is present in _____________.

biology animal tissue muscle tissue structure of protein muscle tissues

  1. Leg

  2. Thigh

  3. Uterus of pregnant woman

  4. Urethra

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Correct Option: C

Which one of the following is correct pairing of a body part and like kind of muscle tissue that moves it ?

biology animal tissue muscle tissue structure of protein muscle tissues

  1. Iris Involuntary smooth muscle

  2. Heart wall Involuntary unstriated muscle

  3. Biceps of upper arm smooth muscle fibers

  4. Abdominal wall smooth muscle

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Correct Option: A

Select the correct option:

Which one of the following is correct pairing of a body part with the kind of muscle tissue present in it?

biology animal tissue muscle tissue structure of protein muscle tissues

  1. Biceps of upper arm- Smooth muscle fibres

  2. Abdominal wall- Voluntary smooth muscle

  3. Iris- Involuntary smooth muscle

  4. Heart wall- Involuntary unstriated muscle

Show answer
Correct Option: C
Explanation:

Involuntary smooth muscles are those muscles that are not under the control of our will and are without any striations (stripes). Iris has involuntary smooth muscle. Biceps of upper arm have  striated muscle fibres and abdominal wall has involuntary smooth muscles. Heart wall has involuntary striated muscle.

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

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

  1. Muscle cell

  2. Secretory cell

  3. Nerve cell

  4. RBC

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Correct Option: A

What is sarcomere ?

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

  1. Part between two H-lines

  2. Part between two A-lines

  3. Part between two I-bands

  4. Part between two Z-lines

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Correct Option: D
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'.
.

ER is lacking in 

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

  1. muscle cells

  2. embryo cells

  3. adipose cells

  4. all of the above

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Correct Option: A

Where would you find mast cells ?

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

  1. Adipose tissue

  2. Areolar tissue

  3. Yellow fibrous tissue

  4. White fibrous tissue

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Correct Option: B

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

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

  1. Skeletal muscles fibre

  2. Cardiac muscles fibre

  3. White muscles fibre

  4. Smooth muscles fibre

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Correct Option: A

The filaments of myofibril are made up of?

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

  1. Actin, troponin, tropomyosin

  2. Actin, troponin

  3. Myosin, Troponin

  4. Actin, tropomyosin

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Correct Option: A