Which of the following features is/are correct for heterochromatin of eukaryotic nucleus?

• It is highly expanded in interphase

• It stains densely with basic dyes

• It is highly condensed in interphase

• It stains densely with acidic dyes

Identify the type of flagella Column I based on there structures given in Column II.

Column I (Flagella type)	Column II (Structure)
A. Monotrichous	1.
B. Amphitrichous	2.
C. Lophotrichous	3.
D. Peritrichous	4.

• A - 1; B - 2; C - 3; D - 4

• A - 2; B - 1; C - 4; D - 3

• A - 4; B - 3; C - 2; D - 1

• A - 4; B - 1; C - 2; D - 3

173.

Identify the correct pair of combinations

I. Schwann - Omnis cellula-e-cellula

II. Ochoa - Polynucleotide phosphorylase

III. Taylor - Semiconservative replication of DNA

IV. Flemming - Ribosomes

• II, III

• III, IV

• II, IV

• I, III

A feature of peroxisome in our body is

• they are associated with synthesis and storage of lipids

• they contain oxidising enzymes and promotes gluconeogenesis

• they contain oxygenase a detoxification enzyme

• they are not found in intact cells

One key function of nuclear pores is to

• aid in the production of new nuclei

• allow cells to communicate with each other

• form connections between different organelles

• allow molecules like protein to move in and out of the nucleus

Function of SER is

• protein metabolism

• lipid metabolism

• carbohydrate metabolism

• catabolic activity

Which ion is used in the protoplast fusion with the PEG (polyethylene glycol)?

• Na⁺

• Ca⁺⁺

• K⁺

• Mg⁺

The endosymbiotic hypothesis of mitochondrial origin states that

• mitochondria were capable of self-duplication

• mitochondria were initially aerobic bacteria

• mitochondria were chloroplast in the beginning

• mitochondria were part of nucleus

A function of lysosomes is

• replication

• hydrolysis

• respiration

• None of the above

Mitochondria and chloroplasts are similar because

• both have 80S ribosomes

• both have nuclei

• both have single membrane envelope

• both have DNA