Formation of Skeletal Muscle Fibre

Q. Which of the following statements is/are correct?

1. F actin is a polymer of G actin
2. Both F and G actins are monomers of actin
3. G actin is a polymer of F actin
4. Both F and G actins are polymers of actin

Q. Stem cells are self-renewing, undifferentiated cells that divide by mitosis to produce specific body cell types. There are two broad types of stem cells, namely, adult and embryonic.
Which of the following is correct?

1. Embryonic stem cells cannot differentiate into adult nerve cells.
2. Embryonic stem cells can potentially replace damaged nerve cells of the spinal cord.
3. All the above statements are correct.
4. An injury to the nerves of the spinal cord can always be corrected by adult stem cells.

Q. Which of the following statements is/are correct?

1. Both F and G actins are monomers of actin
2. G actin is a polymer of F actin
3. F actin is a polymer of G actin
4. Both F and G actins are polymers of actin

Q. The fusion of myoblasts leads to the formation of

1. Myocytes
2. Leucocytes
3. Lymphocytes
4. All of the above

Q. Which of the following agents does not cause contraction of the mesangial cells in the glomerulus?

1. Noradrenaline
2. Histamine
3. Dopamine
4. Vasopressin

Q. Totipotency is accurately defined as

1. Regeneration
2. Production of a plant from a part
3. Induce roots
4. Produce somatic embryo

Q. The fusion of myoblasts leads to the formation of

1. Myocytes
2. Leucocytes
3. Lymphocytes
4. All of the above

Q. Bone marrow occurs in?

1. Ribs and sternum
2. Ribs, sternum and cranial bones
3. Ribs and cranial bones
4. Only ribs