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