Q.1.
on Q444) How many of the following are not the part of endomembrane system? Endoplasmic reticulum, Golgi complex, Lysosome, Chloroplast, Mitochondria, Peroxisomes.

Explanation

Q.2.
on Q445) Ribosome factories are: (i) Non membrane bound structures. (ii) Seen in both cytoplasm and nucleus. (iii) Site for r-RNA synthesis. (iv) Spherical in shape.

Explanation

Q.3.
on Q446) Ergastoplasm is a modification of:

Explanation

Q.4.
on Q447) Which structure serves as a protective layer against attack by phagocytes and by viruses?

Explanation

Q.5.
on Q448) Robert Brown discovered nucleus first in:

Explanation

Q.6.
on Q449) Bright colours of ripe fruits are due to:

Explanation

Q.7.
on Q450) A student placed two cells in the same solution in two different containers. The observation was given in the table. Which structure maintains the shape of the cell present in container 2 and provides the most significant difference between the two cells?
Container Observation
1 Cell burst
2 Cell does not change its shape

Explanation

Q.8.
on Q451) Lysosomes were discovered by:

Explanation

Q.9.
on Q452) Hammerling's experiments on Acetabularia proved genetic information is in....

Explanation

Q.10.
on Q453) Unstained living tissues of a cell can be examined by:

Explanation

Q.11.
on Q454) Who invented electron microscope?

Explanation

Q.12.
on Q455) The leucoplast which stores protein is known as...

Explanation

Q.13.
on Q456) Match the following organisms with their approximate sizes:
a. Bacteria 10 - 20 µm
b. Eukaryotic cell 0.1 µm
c. PPLO 0.02 - 0.2 µm
d. Viruses 1 - 2 µm
   

Explanation

Q.14.
on Q457) Which one is not true for mitochondria?

Explanation

Q.15.
on Q458) r-RNA composition of larger subunit of ribosomes are:

Explanation

Q.16.
on Q459) largest organelle in a plant cell is:

Explanation

Q.17.
on Q460) The size of prokaryotic ribosome is:

Explanation

Q.18.
on Q461) Which organelle possesses circular DNA?

Explanation

Q.19.
on Q462) Match the following:
a. Steward Ribophorin I
b. Plasmid Hypnotoxin of nematoblasts
c. RER Cellular totipotency
d. Golgi apparatus Aerobic respiration
e. Mitochondria Fertility factor

Explanation