NEET Biology: Questions 192 - 197 of 3390

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Question number: 192

» Biotechnology and Its Applications » Application of Biotechnology in Health and Agriculture

MCQ▾

Question

The term antibiotic was coined by

Choices

Choice (4) Response

a.

Edward Jenner

b.

Louis Pasteur

c.

Alexander Fleming

d.

S. Waksman

Question number: 193

» Genetics and Evolution » Heredity and Variation » Chromosomes and Genes

MCQ▾

Question

The evidence for crossing over which occurs at four stranded stage and not at two stranded stage of the chromosomes, comes from

Choices

Choice (4) Response

a.

Studies of meiosis in maize.

b.

Studies on linkage maps of chromosomes in Drosophila.

c.

4: 4 arrangement of ascospores in Neurospora.

d.

2: 2: 2: 2 arrangement of ascospores in Neurospora.

Question number: 194

» Plant Physiology » Transport in Plants » Guttation

MCQ▾

Question

Stomata open during day time because the guard cells

Choices

Choice (4) Response

a.

Are bean shaped.

b.

Are thin-walled.

c.

Photosynthesize and produce osmotically active sugars or organic acids.

d.

Help in gaseous exchange.

Question number: 195

» Biotechnology and Its Applications » Human Insulin and Vaccine Production

Appeared in Year: 2003

MCQ▾

Question

Genetically engineered human insulin is called

Choices

Choice (4) Response

a.

Humulin

b.

Haematin

c.

Hybrid

d.

Hybridoma

Question number: 196

» Cell Structure and Function » Chemical Constituents of Living Cells » Biomolecules-Structure and Function

MCQ▾

Question

Sucrose, a common table sugar, is composed of

Choices

Choice (4) Response

a.

Glucose + galactose

b.

Fructose + galactose

c.

Glucose + fructose

d.

All of the above

Question number: 197

» Human Physiology » Neural Control and Coordination » Generation and Conduction of Nerve Impulse

MCQ▾

Question

Which one of the following statement in regard to nerve activity is true?

Choices

Choice (4) Response

a.

The synaptic cleft does not prevent direct propagation of action potential from presynaptic neuron to post synaptic cell.

b.

Combination of neurotransmitter with receptor site changes membrane potential without changing membrane potentiality.

c.

In tetanus the excitatory impulse to muscles are inhibited leading to lock jaw.

d.

Information across the synaptic cleft is transmitted by means of a chemical neurotransmitter in small vesicle.

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