(a) Respiration and combustion
Respiration |
Combustion |
||
1. |
It is a biochemical process. |
1. |
It is a physicochemical process. |
2. |
It occurs in the living cells. |
2. |
It does not occur in the living cells. |
3. |
ATP is generated |
3. |
ATP is not generated |
4. |
Enzymes are required |
4. |
Enzymes are not required |
5. |
It is a biologically-controlled process. |
5. |
It is an uncontrolled process. |
(b) Glycolysis and Krebs cycle
Glycolysis |
Krebs cycle |
||
1. |
It is a linear pathway. |
1. |
It is a cyclic pathway. |
2. |
It occurs in the cell cytoplasm. |
2. |
It occurs in the mitochondrial matrix. |
3. |
It occurs in both aerobic as well as anaerobic respiration. |
3. |
It occurs in aerobic respiration only. |
4. |
Net Generation of 2 NADH+H+ and 2 ATP molecules occurs on the breakdown of one glucose molecule. |
4. |
It produces 6 NADH+H+, 2FADH2, and 2 ATP molecules on the breakdown of two acetyl-CoA molecules generated after glycolysis of one glucose molecule. |
(c) Aerobic respiration and fermentation
Aerobic respiration |
Fermentation |
||
1. |
Oxygen is used for deriving energy |
1. |
Occurs in the absence of oxygen |
2. |
Occurs in the cytoplasm and mitochondria |
2. |
Occurs in the cytoplasm |
3. |
End products are carbon dioxide and water |
3. |
End products are ethyl alcohol and carbon dioxide |
4. |
Complete oxidation of the respiratory substrate takes place |
4. |
Incomplete oxidation of the respiratory substrate takes place |
5. |
About 36 ATP molecules are produced |
5. |
Only 2 ATP molecules are produced |
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
Define a taxon. Give some examples of taxa at different hierarchical levels.
Briefly mention the mechanism of action of FSH.
Discuss the main steps in the digestion of proteins as the food passes through different parts of the alimentary canal.
Mention the ploidy of the following:
protonemal cell of a moss;
primary endosperm nucleus in dicot,
leaf cell of a moss;
prothallus cell of a fern;
gemma cell in Marchantia;
meristem cell of monocot,
ovum of a liverwort, and
zygote of a fern.
Yes
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