Which of the following is the largest constituent of the membrane of the erythrocyte in human beings and is also responsible for performing most of the functions of the membrane?

1. Protein

2. Lipid

3. Glycolipid

4. Glycoprotein

Prokaryotic mesosomes do not help in:

1. Cell wall formation

2. DNA replication

3. Respiration

4. Photosynthesis

The outer membrane of the nucleus:

I. is continuous with the Endoplasmic reticulum

II. does not bear ribosomes.

1. Only I is correct

2. Only II is correct

3. Both I and II are correct

4. Both I and II are incorrect

All of the following are nucleosides, except:

Identify the incorrect statement regarding the structure of proteins:

The beginning of diplotene is recognized by:

1. appearance of recombination nodules
2. crossing over
3. dissolution of synaptonemal complex
4. appearance of chiasmata

In an average composition of a cell, the maximum % of total cellular mass [after water and protein] is constituted by:

1. Carbohydrates

2. Lipid

3. Nucleic acids

4. Ions

Identify the option, where all the columns are not matched correctly:

A feature unique to prokaryotes would be:

1. A cell wall not made up of cellulose

2. An extrachromosomal plasmid DNA

3. A cell membrane of peptidoglycan

4. Presence of inclusions

The six most common atoms in organic molecules are: