5

Question 1

Hexose sugars?

Answer 1

Glucose, galactose and fructose

Question 2

Glucose polysaccharides?

Answer 2

Glycogen and starch

Question 3

Glycosaminoglycans?

Answer 3

Heparan sulphate and chondroitin sulphate

Question 4

Main components of nucleus?

Answer 4

Nuclear envelope, chromatin, nuclear matrix, nucleolus, nucleoplasma

Question 5

Proteins connecting chromatin to inner surface of nuclear membrane?

Answer 5

Laminate proteins

Question 6

Classification of heterochromatin?

Answer 6

Marginal, nucleolus associated and diffuse

Question 7

Difference between eu and heterochromatin?

Answer 7

Hetero is inactive
Eu has transcriptionally active parts

Question 8

Component of nucleolus?

Answer 8

Fibrillar center, fibrillar component, granular component, nucleolus associated heterochromatin.

Question 9

Transport and G-protein that transports in the nuclear pores?

Answer 9

Transport- importin
G-protein- Ran

Question 10

Enzyme activity of Ran?

Answer 10

GTPase

Question 11

Types of karyopherins?

Answer 11

Importins and exportins

Question 12

Form of DNA found in interphase and in dividing cells?

Answer 12

Interphase cells- Chromatin
Dividing cells- Chromosome

Question 13

Chemical component of Chromatin?

Answer 13

DNA, RNA, ions, proteins

Question 14

Chemical modifications of histones?

Answer 14

Phosphorylation and acetylation

Question 15

Difference between constitutive and facultative heterochromatin?

Answer 15

Constitutive- permanently inactive
Facultative- occasionally active

Question 16

Components of nucleosome?

Answer 16

Histone octamer and DNA

Question 17

Morphological levels of chromatin organization?

Answer 17

Beads on a string | solenoid | looped domain | metaphase chromosome

Question 18

Non histone protein with regulatory and enzymatic function?

Answer 18

Regulatory- TATA factor and SRF
Enzymatic- RNA polymerase and DNA polymerase

Question 19

RNA molecules in chromatin?

Answer 19

pre-mRNA and pre-rRNA

Question 20

RNP components of chromatin?

Answer 20

Perchromatin granules and interchromatin granules

Question 21

Region of chromatids where microtubules bind?

Answer 21

Kinetochore

Question 22

Region of chromosomes where sister chromatids attach?

Answer 22

Centromere