Structure of Chromosomes

Q.

What is balbiani rings sites of?

Q.

What are the structures called which give an appearance as beads on a string in the chromosomes when viewed under an electron microscope?

1. Nucleotides

2. Genes

3. Nucleosomes

4. Base pairs

Q. A single human cell has approximately _____ long thread of DNA distributed among its _____ chromosomes.

1. 2 cm, 46
2. 2 metre, 46
3. 2 cm, 23
4. 2 metre, 23

Q.

Integral proteins are made up of

1. Glycophorins

2. Spectrins

3. Spectophorins

4. Glycans

Q. Which of the following terms refers to the terminal ends of chromatids?

1. Telomere
2. Centromere
3. Kinetochore
4. Satellite

Q.

What is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.

Q. Nucleoproteins are

1. proteins found in the nucleus
2. pigment molecules
3. proteins linked to a nucleic acid
4. novel proteins