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Which one of the following metabolic intermediates is common to glycolysis, nucleotide synthesis, and glycogen synthesis?
(A) Citrate
(B) Oxaloacetate
(C) Glucose 6-phosphate
(D) Glycerol 3-phosphate
1 Answer Mammalian cells cultured at low temperature (25 to 30°C) lead to an increased sterol content in the membrane. Elevated sterols in the membrane result in
(A) an enhancement in membrane fluidity.
(B) stabilization of membrane proteins.
(C) an increase in membrane permeability to water.
(D) a decrease in membrane fluidity.
1 Answer Which one of the following pairs of amino acids is NOT incorporated in a polypeptide chain?
(A) 4-Hydroxyproline and γ-carboxyglutamate
(B) γ-Carboxyglutamate and desmosine
(C) Ornithine and citrulline
(D) 4-Hydroxyproline and 5-hydroxylysine
1 Answer
0 Answers Which of the following is/are true about Retrovirus?
(A) It contains double-stranded RNA genome
(B) It can cause cancer
(C) It contains reverse transcriptase
(D) It contains double-stranded DNA genome
1 Answer Which of the following is/are trace element(s)?
(A) Mn
(B) P
(C) S
(D) Zn
1 Answer Which of the following entity(ies) is/are found inside the intact nucleus of eukaryotic cells?
(A) Centrosome
(B) Lysosome
(C) Nucleolus
(D) Nucleosome
1 Answer Which of the following technique(s) can be used to determine the three-dimensional structure of an organic compound?
(A) Mass spectrometry
(B) NMR spectroscopy
(C) UV-visible spectroscopy
(D) X-ray crystallography
1 Answer Which of the following statement(s) about the effect of genetic drift is/are correct?
(A) It can cause changes in the frequency of alleles at random
(B) It is a mechanism of evolution
(C) It can lead to loss of genetic variation within small populations
(D) It is significant in large populations
1 Answer Which of the following is/are example(s) of a lotic ecosystem?
(A) Lake
(B) Pond
(C) River
(D) Stream
1 Answer
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