CUET UG Biology Practice Test

1.Which of the following is a recessive trait for garden pea plant?
Round seed
Tall plant
Violet flower
Constricted pod

2. Nucleosome is
positively charged DNA wrapped around Negatively charged histone octamer
negativley charged DNA wrapped around positively charged histone octamer
positively charged DNA wrapped around positively charged histone octamer
negatively charged DNA wrapped around negatively charged histone octamer

3. Transforming principle was given by
Watson and Crick
Alfred Hershey
Frederick Griffith
Maclyn Mccarty

4. Which disorder is caused by the substitution of glutamic acid by valine at the six position of the beta globin chain of the haemoglobin?
Phenylketonuria
Haemophilia
Thalassemia
Sickle cell anaemia

5.Streptokinase enzyme is used for
removing clot from blood vessels
clarifying fruit juices
synthesis of cholesterol
removing oily stains

6. Which of the following is not a step of polymerase chain reaction?
Extension
Annealing
Denaturation
Downstream processing

7. Analogous structures are a result of
divergent evolution
genetic drift
point mutations
convergent evolution

8.Amino acid is attached to which site of tRNA?
Anticodon loop
5 end
3 end
D loop

9.Which one of the following lymphoid organ is large at birth but reduces with age?
Bone marrow
Spleen
Peyers patches
Thymus

10. Which of the following plays a significant role in our stomach in checking diseae causing microbes
pencillium notatum
monascus purpureus
lactobacillus
trichoderma polysporum

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