Sperm Anatomy

Q.

Which of the following reactions takes place in mitochondria?

1. glycolysis

2. Oxidative phosphorylation

3. both krebs cycle and oxidative phosphorylation.

4. Krebs Cycle

Q. A cross section at the midpoint of the middle piece of human sperm will show

1. centriole, mitochondria and 9 + 2 arrangement of microtubules
2. centriole and mitochondria
3. mitochondria and 9 + 2 arrangement of microtubules
4. 9 + 2 arrangement of microtubules only

Q. The secretion by ___________ helps the sperm to enter into the cytoplasm of the ovum.

1. zona pellucida of ovum
2. middle piece of sperm
3. cells of corona radiata
4. acrosome

Q. The enzymes that dissolve the membrane
enveloping the ovum and help sperm to enter the ovum are:

1. Sperm lysins
2. Inhibin
3. Both a and b
4. Spectrin

Q.

Given below are certain statements regarding sperm organelles. With respect to these statements, choose the correct option.

Statement 1: Centrioles provide polarity to the sperm.

Statement 2: Centrioles release energy when mitochondria in sperm become dysfunctional.

Statement 3: Centrioles help in cell division in the zygote formed post fertilisation.

Statement 4: Sperm do not possess centrioles.

1. Statement 1 is correct.

2. Statements 1 and 2 are correct.

3. Statements 1, 3 and 4 are correct.

4. Statement 3 is correct.

Q.

Acrosome of the sperm is derived from_______

1. Golgi apparatus

2. nucleus

3. centriole

4. mitochondria

Q. what is the diff. between vas deference & vasa defrensia?

Q.

Explain the role of oxygen and F₀ -F₁ complex in ETS.