Q. No.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
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:
| 1. | lignified cemented layers between cells |
| 2. | locomotory structures |
| 3. | membranes connecting the nucleus with plasmalemma |
| 4. | connections between adjacent cells |
The cytoskeleton is made up of:
1. calcium carbonate granules
2. callose deposits
3. cellulosic microfibrils
4. proteinaceous filaments
| 1. | several ribosomes attached to a single mRNA |
| 2. | many ribosomes attached to a strand of endoplasmic reticulum |
| 3. | a ribosome with several subunits |
| 4. | ribosomes attached in a linear arrangement |
| 1. | is membrane-bound and contains storage proteins and lipids |
| 2. | is membrane-bound and contains water and excretory substances |
| 3. | lacks membrane and contains air |
| 4. | lacks membrane and contains water and excretory substances |
Which one of the following is not a constituent of the cell membrane?
1. Cholesterol
2. Glycolipids
3. Proline
4. Phospholipids
Select the wrong statement from the following:
| 1. | Both chloroplast and mitochondria contain an inner and an outer membrane |
| 2. | Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane |
| 3. | Both chloroplasts and mitochondria contain DNA |
| 4. | The chloroplasts are generally much larger than mitochondria |
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
The shorter and longer arms of submetacentric chromosome are referred to as:
1. m-arm and n-arm respectively
2. s-arm and l-arm respectively
3. p-arm and q-arm respectively
4. q-arm and p-arm respectively
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