Which one of the following is a non-reducing carbohydrate?
1. Maltose
2. Sucrose
3. Lactose
4. Ribose 5-phosphate
Which one of the following structural formulae of two organic compounds are correctly identified along with its related function?
1. A- Triglyceride – a major source of energy
2. B- Uracil – a component of DNA
3. A- Lecithin – a component of cell membrane
4. B- Adenine – a nucleotide that makes up nucleic acids
The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) what do the two axis (X and Y) represent?
|
X-axis |
Y-axis |
|
|
(a) |
Temperature |
Enzyme activity |
|
(b) |
Substrate concentration |
Enzyme activity |
|
(c) |
Enzyme activity |
Temperature |
|
(d) |
Enzyme activity |
pH |
1. (a)
2. (b)
3. (c)
4. (d)
1. pythium
2. Xanthomonas
3. Pseudomonas
4. Saccharomyces
| (A) | Easily translocated |
| (B) | Chemically non-reactive |
| (C) | Easily digested by animals |
| (D) | Osmotically inactive |
| (E) | Synthesized during photosynthesis |
The useful properties are:
| 1. | (B) and (C) |
| 2. | (B) and (D) |
| 3. | (A), (C) and (E) |
| 4. | (A) and (E) |
A competitive inhibitor of succinic dehydrogenase is:
| 1. | malonate | 2. | oxaloacetate |
| 3. | α-ketoglutarate | 4. | malate |
The biological organisation starts with:
1. Submicroscopic molecular level
2. Cellular level
3. Organisms level
4. Atomic level
Which one of the following is a fat-soluble vitamin and its related deficiency disease?
| 1. | Ascorbic acid - Scurvy |
| 2. | Retinol - Xerophthalmia |
| 3. | Cobalamine - Beri-Beri |
| 4. | Calciferol - Pellagra |
Many elements are found in living organisms either free or in the form of compounds. Which one of the following is negligible in living organisms?
1. Silicon
2. Magnesium
3. Iron
4. Sodium
Which of the following represents uridylic acid?
1. Uracil + Ribose
2. Uridine + Phosphoric acid
3. Uracil + Phosphoric acid
4. Uridine + Ribose + Phosphoric acid
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