Note: Solve all the questions
Q3. Do any five of the followings
Euchromatin
Heterochromatin
karyokinesis
cytokinesis
e) nucleosome
f) solenoid
g) Glyoxysome
Answers
answer:
a) Heterochromatin:
heterochromatin is such part of the chromosomes, which is a firmly packed form and are genetically inactive.
b) Euchromatin:
euchromatin is an uncoiled (loosely) packed form of chromatin and are genetically active.
c) Karyokinesis:
Karyokinesis is the division of the nucleus, and is followed by Cytokinesis, the division of the cell cytoplasm.
d) Cytokinesis:
Cytokinesis is the part of the cell division process during which the cytoplasm of a single eukaryotic cell divides into two daughter cells. Cytoplasmic division begins during or after the late stages of nuclear division in mitosis and meiosis.
e) Nucleosome:
The nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer.
f) Solenoid:
Solenoid is the generic term for a coil of wire used as an electromagnet. It also refers to any device that converts electrical energy to mechanical energy using a solenoid. The device creates a magnetic field from electric current and uses the magnetic field to create linear motion.
g) Glyoxysome:
Glyoxysomes are specialized peroxisomes found in plants and also in filamentous fungi. Seeds that contain fats and oils include corn, soybean, sunflower, peanut and pumpkin. As in all peroxisomes, in glyoxysomes the fatty acids are oxidized to acetyl-CoA by peroxisomal β-oxidation enzymes.
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