Which of the following features is/are correct for heterochromati

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

341.

Peroxisomes have

  • ribosome

  • DNA

  • catalase enzyme

  • centrosome


342.

Two membrane envelops is found in

  • mitochondria, Golgi apparatus and chloroplast

  • mitochondria, nucleus and chloroplast

  • nucleus, Golgi apparatus and endoplasmic reticulum

  • nucleus, ribosome and chloroplast


343.

Genes for maternal inheritance are located in

  • Golgi bodies

  • mitochondria

  • lysosome

  • nucleolus


Advertisement

344.

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


B.

It stains densely with basic dyes

C.

It is highly condensed in interphase

Heterochromatin is a tightly packed from of DNA, that stains intensely. Both centromeres and telomeres are heterochromatic. Heterochromatic telomeres remains condensed during interphase where as 'euchromatin" decondenses during interphase. DNA is acidic in nature and therefore stains basic dyes. Loosely coiled chromatin (euchromatin) stainslightly with basic dyes whereas tightly coiled DNA (heterochromatin) stains darkly with basic dyes.


Advertisement
Advertisement
345.

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


346.

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


347.

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


348.

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


Advertisement
349.

Function of SER is

  • protein metabolism

  • lipid metabolism

  • carbohydrate metabolism

  • catabolic activity


350.

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

  • Na+

  • Ca++

  • K+

  • Mg+


Advertisement