Plastids used in storing proteins are called as:

1. Amyloplasts

2. Aleuroplasts

3. Elaioplasts

4. Chromoplasts

A centriole-like structure, from which the cilium and the flagellum emerge, is the:

1. Centrosome

2. Basal body

3. Axoneme

4. Vimentin

The outer membrane of the nucleus:

I. is continuous with the Endoplasmic reticulum

II. does not bear ribosomes.

1. Only I is correct

2. Only II is correct

3. Both I and II are correct

4. Both I and II are incorrect

If the centromere is situated close to the end of a chromosome, it is called as:

1. Metacentric

2. Submetacentric

3. Acrocentric

4. Telocentric

Centrioles, cilia, flagella, and basal bodies have remarkably similar structural elements and arrangements. This leads us to which of the following as a probable hypothesis?

The presence of cholesterol in the plasma membranes of some animals.

1. enables the membrane to stay fluid more easily when cell temperature drops.

2. enables the animal to remove hydrogen atoms from saturated phospholipids.

3. enables the animal to add hydrogen atoms to unsaturated phospholipids.

4. makes the membrane less flexible, allowing it to sustain greater pressure from within the cell.

Prokaryotic cells have something unique in the form of:

1. Inclusion bodies

2. Plasmids

3. Cell wall

4. 70 S ribosomes

Gas vacuoles allow cyanobacteria to:

1. Store carbon dioxide for assimilation
2. Control their buoyancy
3. Provide anaerobic conditions to nitrogenase
4. Eliminate toxic ammonia

The lipid component of the plasma membrane mainly consists of:

1. Triglycerides

2. Cholesterol

3. Phosphoglycerides

4 Proteins

Carotenoid pigments are found in:

I. Chloroplasts

II. Chromoplasts

III. Leucoplasts

1. Only I

2. Only I and II

3. Only II

4. I, II and III