Which of the following is necessary to start clotting of blood
Options
(a) heparin (b) thromboplastin and Ca⁺⁺ (c) serotonin (d) fibrinogen and prothrombin
Correct Answer:
thromboplastin and Ca⁺⁺
Explanation:
No explanation available. […]
Frequency of Down’s syndrome increase when the maternal age is
Options
(a) above 35 years (b) below 35 years (c) during 1st pregnancy (d) in mothers of atleast 3 children
Correct Answer:
above […]
In genetic engineering experiment, DNA fragments are joined by
Options
(a) gyrase (b) helicase (c) ligase (d) polymerase
Correct Answer:
ligase
Explanation:
No explanation available. Be the first to write the explanation for […]
Which one of the following is the first national park in India?
Options
(a) Kanha national park (b) Periyar national park (c) Corbett national park (d) Bandipur national park
Correct Answer:
Corbett national […]
When a potato piece is kept in a concentrated salt solution then
Options
(a) potato is plasmolysed (b) potato cells get bursted (c) potato is deplasmolysed (d) there is no effect due to […]
The temperature range, at which enzymes are maximum functional is
Options
(a) 30° – 50° C (b) 20° – 30° C (c) 15° – 25° C (d) 40° – 65° C
Correct Answer: […]
How many cytochromes are involved in the electron transport chain?
Options
(a) five (b) two (c) six (d) four
Correct Answer:
five
Explanation:
No explanation available. Be the first to write the explanation […]
Which enzyme is used as ‘molecular scissor’ in genetic engineering?
Options
(a) restriction endonuclease (b) DNA polymerase (c) DNA ligase (d) DNA gyrase
Correct Answer:
restriction endonuclease
Explanation:
No explanation available. Be the […]
Which of the following fruits are found in the family ranunculaceae?
Options
(a) berry (b) achenes (c) capsule (d) all of these
Correct Answer:
all of these
Explanation:
No explanation available. Be the […]
The primary acceptor, during carbon dioxide fixation in C₃ plants is
Options
(a) phosphoglyceric acid(PGA) (b) phosphoenolpyruvate(PEP) (c) ribulose monophosphate(RMP) (d) ribulose 1,5-diphospate(RuDP)
Correct Answer:
ribulose 1,5-diphospate(RuDP)
Explanation:
No explanation available. Be the […]
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