11. The number of chromosomes in chimpanzee is?
a. 46
b 48
c 68
d. 80
12. The number of chromosomes in man is?
a. 32
b 46
c 68
d. 80
13.Haemoglobin contains?
a. Mg + +
b. Cu + +
C, Fe + +
d. Non of these
Feedback: Haemoglobin contains a ‘haem’ prosthetic group that has an iron atom at its centre. Haemoglobin contains 0.334% of iron by weight. It is oxygen transporting metalloprotein in the red blood cells of all vertebrates. Hence, option A is correct.
14.Chlorophyll contain?
a. Mg + +
b. Cu + +
c. Fe + +
d. None of these
15.The number of chromosomes in frog?
a. 46
b. 48
c. 32
d. 26
16.The place where spindle fibers are attached is?
a. Centromere
b. Chlnroblast
c. Chromosomes
d. All of these
17. Chromoplast helps in pollination and dispersal of?
a. Ulva
b. Seeds
C. Ovary
d. Non of these
Feedback: Chromoplast: Contains carotene and xanthophyll. They impart a specific color to flowers and fruits and help in pollination and dispersal of seeds.
18.Cell fail to detoxify the waste substances produced in it because it does not posses enough?
a, SEE
b. RER
c Mitochondria
d. Lysosomes (suicide bags of the cell.)
19. The shapes of mitochondria may be?
a. Vesicles
b. Rods
c. Filaments
d. All of these
20.Mitochondria are also called?
a. Power house of the cell
b. Power room of the cell
c. Power car of the cell
A. Generator of the cell
21.Two subunits of ribosomes are attached by?
a. Mg + +
b. Cu + +
c. Fe + +
d. Non of these
Each ribosomal unit consists of the RNA nucleotide molecules and also their associated proteins. When these two subunits are joined together, it constitutes the active ribosomes of synthesis of the protein. This joining of the two subunits is mainly done by the magnesium ions present in the cell.
22. Diameter of nucleus?
- 4 -6 um
- 10 um
- 20 um
- None Of These
The nucleus is the largest organelle in animal cells. In mammalian cells, the average diameter of the nucleus is approximately 6 micrometres (µm).
23. Diameter of ribosome?
- 0.02 um
- 10 um
- 20 um
- None Of These
A ribosome is made of a small subunit and a large subunit, each containing RNA and proteins. The subunits are transported separately through the nuclear pores into the cytosol, where they’re assembled into a functional ribosome. A ribosome is much smaller than the nucleus, only about 0.02 micrometer in diameter
24.The subunit of micro filament?
- Tubulin protein
- Actin protein
- Fibrous
- Non of these
25.Eukaryotic Cell wall is made of?
a. Cellulose
b. Chitin
c. Glycogen
d. Murein