NSO Level 1- Science Olympiad (SOF) Class 12: Questions 29 - 32 of 60

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Question number: 29

» Biology » Reproduction

Edit
Matching-Pair▾

Question

Find the pair which does not match:

Choices

Choice (4) Response

a.

Diaphragm

It’s a soft rubber cup with the help of which sperms are prevented from entering uterus.

b.

Oral Pills

Implantation prevented by release of progesterone when inserted under the skin.

c.

Vasectomy

Procedure of sterilization in female

d.

Both c. and b. are correct

Question number: 30

» Biology » Biotechnology

Edit
MCQ▾

Question

Which one of the following is a correct statement?

Choices

Choice (4) Response

a.

“Bt” in Bt-cotton indicates that it is genetically modified organism produced by biotechnology.

b.

Transgenic Brassica napus seeds produce anticoagulant hirudin.

c.

Fusion of two complete plant cells which have desired genes is Somatic hybridization.

d.

The improvement of taste in “Flavr savr” tomato variety is because of increased ethylene production.

Question number: 31

» Biology » Genetics and Evolution

Edit
MCQ▾

Question

There is large surface inside the cell provided by endoplasmic reticulum for various physiological activities. Endoplasmic reticulum is a site for all of the following except:

Choices

Choice (4) Response

a.

Serum protein synthesis

b.

Ca2+ storage for release during muscle contraction

c.

Detoxification with help of cyt P450

d.

Membrane transformation

Question number: 32

» Biology » Biology in Human Welfare

Edit
MCQ▾

Question

Oxygen binding curves of haemoglobin and myoglobin are given in the graph. Choose the correct reason which explains different oxygen binding capacities.

Graph for oxygen binding curves

Graph for Oxygen Binding Curves

Graph illustrates the different oxygen affinities of myoglobin and hemoglobin at different concentrations of oxygen.

Choices

Choice (4) Response

a.

Glycogen depletion in muscles is prevented by it during exercise.

b.

During strenuous conditions muscles can respire anaerobically because of it.

c.

It ensures oxygen transport from blood into the muscles.

d.

Question does not provide sufficient data or is vague

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