Peptide synthesis inside a cell takes place in:
1.  mitochondria
2.  chromoplast
3.  ribosomes
4.  chloroplast

Membrane-bound organelles are absent in:

1. Saccharomyces

2. Streptococcus

3. Chlamydomonas

4. Plasmodium

Which one of the following has its own DNA?
1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome

The main arena of various types of activities of a cell is:
1. Plasma membrane
2. Mitochondria
3. Cytoplasm
4. Nucleus

The plasma membrane consists mainly of:

1. phospholipids embedded in a protein bilayer

2. proteins embedded in a phospholipid bilayer

3. proteins embedded in a polymer of glucose molecules

4. proteins embedded in a carbohydrate bilayer

Alage have cell wall made up of:
1. Cellulose, galactans and mannans
2. Hemicellulose, pectins and proteins
3. Pectins, cellulose and proteins
4. Cellulose, hemicellulose and pectins

Middle lamella is mainly composed of:

1. hemicellulose 

2. muramic acid

3. calcium pectate

4. phosphoglycerides

Plasmodesmata are:
 

The cytoskeleton is made up of:
1. calcium carbonate granules
2. callose deposits
3. cellulosic microfibrils
4. proteinaceous filaments

1. Both lipids and proteins can flip-flop

2. While lipids can rarely flip-flop, proteins cannot

3. While proteins can flip-flop, lipids cannot

4. Neither lipids nor proteins can flip-flop