Home
Class 12
BIOLOGY
Which of the following statements are co...

Which of the following statements are correct for the enzyme Taq polymerase ?
(i) It remains active during the high temperature induced denaturation of dsDNA.
(ii) It requires primers for carrying out the process of polymerisation.
(iii) It synthesises the RNA region between the primers, using dNTPs and `Mg^(2+)`.

A

a) (i) and (ii)

B

b) (ii) and (iii)

C

c) (i),(ii) and (iii)

D

d) None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following statements are correct regarding secretion oxyntic cells? (i) It denatures proteins and softens fibrous connective tissues in the blood. (ii) It activates rennin. (iii) It has a role in maturation of RBCs. (iv) It activates trypsin.

Which of the following statements are correct with respect to a biorector ? (i) It can process large volumes of culture. (ii) It provides optimum temperature and pH. (iii) It is a completely automated tool. (iv) It is a compact thermal cycler.

Which of the following statements is/are not correct for single cell protein (SCP)? (i) The biomass is obtained from unicellular microorganisms only. (ii) It provides a protein rich supplement. (iii) They can be grown easily on materials like waste water from potato processing plants, straw, manure, sewage, etc. (iv) It helps to minimise environmental pollution. (v) SCP has to be processed before use.

Which of the following statements are correct? (i). Glucose has high threshold value. (ii). Urine is concentrated in Henle's loop (iii). Haemodialyser removes urea, uric acid, glucose and plasma proteins (iv). In glomerulus, urea, uric acid, water, glucose and plasma proteins are filtered out.

Given below are four statements (i)-(iv). Which two of the following statements are correct ? (i) It is estimated that more than 70 percent of the world livestock population is in India and China. (ii) Stringent cleanliness and hygiene (both of the cattle and the handless) are of paramount importance while milking, storage and transport of the milk and products. (iii) Out-breeding is the breeding between animals of the same breed only. (iv) Corsses between different breeds is called inbreeding.

Which of the following statements about the mechanism of muscle contraction are correct ? (i) Acetylcholine is released when the neural signal reaches the motor end plate. (ii)Muscle contraction is initiated by a signal sent by CNS via sensory neuron. (iii) During muscle contraction, isotropic band gets elongated (iv) Repeated activation of the muscles can lead to lactic acid accumulation.

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

Which of the following statements are correct ? (i) Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome site, but between the same two bases on the opposite strands. (ii) Hind ll always cuts DNA molecules at a particular point by reconginisng a specific sequence of six base pairs. (iii) Separated DNA fragments cannot be visualised without staining on an agarose gel electrophoresis. (iv) 'Ori' is the sequence responsible for controlling the copy number. (v) DNA is a positively charged molecule.