RPSC SSO 2019 Paper Biology Part A Biochemistry

RPSC Senior Scientific Officer Biology Paper 2019 – Part A Biochemistry
Total Questions – 100 Duration – Two hours
No. of questions from Biochemistry – 60 Nos.

Competitive inhibitor of enzyme is
(a) Structural analogue of enzyme
(b) Functional analogue of enzyme
(c) Functional analogue of substrate
(d) Structural analogue of substrate

The maximum velocity of an enzyme catalysed reaction reached when
(a) enzyme is completely free
(b) enzyme concentration is equal to the enzyme substrate complex
(c) substrate concentration high
(d) enzyme concentration very high

Which of these ribozyme resemble tRNA?
(a) HDV Ribozyme
(b) Hairpin Ribozyme
(c) Hammer Head Ribozyme
(d) RNase P

As per international classification of enzymes, which of these category enzymes belongs to class II?
(a) Hydrolases
(b) Ligases
(c) Transferases
(d) Isomerases

If Km value is low, the affinity of enzyme for substrate is
(a) low
(b) more
(c) zero
(d) no change

Enzyme lactate dehydrogenase is
(a) Dimer
(b) Trimer
(c) Tetramer
(d) Pentamer

Which of these relationship was not studied by Mendel?
(a) Flower colour and seed colour
(b) Flower colour and shape of pollen grains
(c) Height and seed coat colour
(d) Height and seed colour

In which type of animals Mendelian inheritance is truly exemplified?
(a) Aploid
(b) Protist
(c) Polyploid
(d) Diploid

Anticodons are present on
(a) mRNA
(b) hnRNA
(c) t-RNA
(d) r-RNA

Chromosome theory of inheritance was proposed by
(a) Watson
(b) Bohr
(c) Correns
(d) Sutton and Boveri