Which enzymes will be produced in a cell in which there is a nonsense mutation in the lac Y gene?
Options
(a) Lactose permease (b) Transactylase (c) Lactose permease and transcetylase (d) β […]
The two sub-units of ribosome remain united a critical ion level of
Options
(a) copper (b) manganese (c) magnesium (d) calcium
Correct Answer:
magnesium
Explanation:
The two subunits of ribosome remain united at a […]
The Leydig cells found in the human body are the secretory source of
Options
(a) Progesterone (b) intestinal mucus (c) glucagon (d) andeogens
Correct Answer:
andeogens
Explanation:
Leydig cells found in testis is […]
The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone:
Options
(a) calcitonin (b) prolactin (c) adrenaline (d) melatonin
Correct Answer:
melatonin
Explanation:
Melatonin is […]
Earthworms during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton because
Options
(a) coelomic fluid (b) blood (c) gut peristalsis (d) setae
Correct Answer:
coelomic fluid
Explanation:
Earthworms have […]
Continuous addition of sugars in ‘fed batch’ fermentation is done to:
Options
(a) produce methane (b) obtain antibiotics (c) purify enzymes (d) degrade sewage
Correct Answer:
purify enzymes
Explanation:
A fed batch is […]
C₄ plants are more efficient in photosynthesis than C₃ plants due to:
Options
(a) Higher leaf area (b) Presence of larger number of chloroplasts in the leaf cells (c) Presence of thin cuticle (d) […]
Which one of the following is not used for ex-situ plant conservation?
Options
(a) Seed backs (b) Shifting cultivation (c) Botanical Gardens (d) Field gene banks
Correct Answer:
Shifting cultivation
Explanation:
Shifting of Jhum […]
Which one of the following is NOT a characteristic of phylum Annelida?
Options
(a) Closed circulatory system (b) Segmentation (c) Pseudocoelom (d) Ventral nerve cord
Correct Answer:
Pseudocoelom
Explanation:
Characteristic of phylum-Annelida is […]
Which one of the following does not differ in E.coli and Chlamydomonas
Options
(a) Ribosomes (b) Chromosomal Organization (c) Cell wall (d) Cellmembrane
Correct Answer:
Cellmembrane
Explanation:
Cell membrane of E. coli, a bacteria […]
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