Question # 1

The myelin sheath is formed by which wrap around the axons of some neurons.

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Nodes of Ranvier

Axons

Dendrites

Schwann cells

------------ is use for the cleaning of sewage water.

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Bacteria

Virus

Algae

Fungi

Bones in skull are:

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22

23

24

25

An example of hardest connection tissue in the body is:

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Cartillage

Bone

Blood

fats

During exercise or other hard physical works the breathing rate may increase up to.

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30-40 times per minute

50-60 times per minute

60-70 times per minute

70-80 times per minute

The part of brain responsible for muscle movement interpretation of senses and the memory is:

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Meulla obtangata

Cerebrum

Cerebelium

Pons

It plays important role in keeping body temperature constant:

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kidney

skin

liver

lungs

How many genetically different kinds of gametes an individual with genotype AAbb can produce?

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1

2

4

9

The simplest method of asexual reproduction is:

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Fragmentation

budding

parthenogenesis

binary fission

The structure of RNA model was proposed by:

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Charles Darwin

c.de Buffon

J.de Lamarck

4

Consumers include:

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animals

protozoans

fungi

all of these

Edward Jennar introduced vaccine of which disease?

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Smallpox

AIDS

Hepatitis

Malaria

In man which hormone is responsible for the development of secondary sex characters:

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estrogen

progesterone

testosterone

oxytocin

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