Q. This cell organelle is responsible to extract energy from carbohydrates to form ATP
(a) Mitochondrion
(b) Lysosome
(c) Ribosome
(d) Chloroplast
Answer: : (a)
Q. Balbiani rings are the sites of
(a) RNA and protein synthesis
(b) Lipid synthesis
(c) Nucleotide synthesis
(d) Polysaccharide synthesis
Answer: : (a)
Q. This organism is not an example of eukaryotic cells
(a) Euglena viridis
(b) Escherichia coli
(c) Amoeba proteus
(d) Paramoecium caudatum
Answer: : (b)
Q. The main site of different types of cellular activities is
(a) Mitochondrion
(b) Nucleus
(c) Cytoplasm
(d) Plasma membrane
Answer: : (c)
Q. Name the non-membrane bound organelle exclusively found only in animal cell
(a) Sphaerosome
(b) Glyoxisome
(c) Centriole
(d) Peroxisome
Answer: : (c)
Q. If the centromere is located at the proximity of the end of a chromosome, it is known as
(a) Acrocentric
(b) Metacentric
(c) Telocentric
(d) Submetacentric
Answer: : (a)
Q. Flagella, centrioles, cilia and basal bodies possess evident similar structural elements and arrangements. This can lead to this probable hypothesis
(a) Loss of basal bodies should lead to loss of all cilia, flagella, and centrioles
(b) Disruption of one of these types of the structure should necessarily disrupt each of the others as well
(c) Natural selection for motility must select for microtubular arrays in circular patterns
(d) Motor proteins such as dynein must have evolved before any of these four kinds of structure
Answer: : (c)
Q. In the plasma membrane of a few animals, the presence of cholesterol
(a) makes the membrane less flexible permitting it to sustain greater pressure from within the cell
(b) enables the membrane to stay fluid more easily when the temperature of the cell drops
(c) enables the animal to remove hydrogen atoms from saturated phospholipids
(d) enables the animal to add hydrogen atoms to unsaturated phospholipids
Answer: : (b)
Q. Component of plant cell absent in animal cell is
(a) Cytoplasm
(b) Cell membrane
(c) Cell wall
(d) Nucleus
Answer: : (c)
Q. The association of more than one ribosome with a single molecule of mRNA complex is known as
(a) Polysome
(b) Polypeptide
(c) Polymer
(d) Polysaccharide
Answer: : (a)
