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Question

Q1. What are  differences in the two types of  Blood cells ?
A. Number of mitotic cycles are different
B. expression of some genes are different
C. red blood cells react to oxygen differently
D. white blood cells react to antigens  differently

Answer/Explanation

Ans : B

Question

Q2. One major difference between eukaryotic and prokaryotic cells is?
A. Only prokaryotes has cell walls
B.  Only  prokaryotes has naked DNA with histones
C.  Only eukaryotes has compartmentalization
D.  Only prokaryotes has Cilia and flagella

Answer/Explanation

Ans: C

Question

Q3. Cytochrome reductase, which is a transmembrane protein which acts as a \(H^+\) channel in respiration , is  a transmembrane protein because of which of below characteristic ?

A. Except for the central core , It is hydrophilic

B. Inside membrane is hydrophobic regions and hydrophilic regions is on both sides of the membrane.

C. hydrophobic  channel and a hydrophilic  membrane

D. It is hydrophobic except for the part in contact with the phospholipid membrane.

Answer/Explanation

Ans : B

Question

Q 4.What is the likely outcome when onion (Allium cepa) epidermis, initially in pure water, is transferred to a hypertonic solution?
A. Cells would gain mass.
B. Cells would take in water by osmosis and swell.
C. Cells would burst open, releasing their content.
D. Cell membranes would detach from walls at some points.

Answer/Explanation

Ans : D

Question

Q5. Which one of following is evidence for the endosymbiotic theory in eukaryotic cells?
A. DNA in  Mitochondrion 
B. Golgi complex in cytoplasm
C. Single nuclear membrane
D. Ribosomes in cytoplasm

Answer/Explanation

Ans : A

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