Question # 1

The study of microorganism includes bacteria, virus, protozoan and microscopic algae and fungi is.

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Parasitology

Molecular biology

Microbiology

Bio technology

Mammals become dominant in

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Paleozoic period

Mesozoic period

Coenozoic period

Proterozoic period

In earthworm exchange of gases mainly takes place through.

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Gills

Lungs

Skin

Ostla

In annelids the organs for excretion are

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Flame cells

Nephridia

Protonephridia

Kidneys

The cells which transmit impulses are.

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Kidney cells

Bone cells

Blood cells

Nerve cells

The process of taking in food is

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Digestion

Ingestion

Assimilation

Absorption

Induced fit model was proposed by.

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Emil Fischer

Pasteur

Jenner

Koshland

Glycolysis

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Produces no ATP

It is same as fermentation

Takes place in the mitochondria

Reduces two molecules of NAD⁺For every glucose molecule processed

In the first step of citric acid cycle, acetyl CoA reacts with oxaloacetate to form

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Pyruvate

Citrate

NADH

ATP

Tests of actinopods are made up of.

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Calcium

Sodium

Silica

Potassium

Citric acid is obtained from

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Penicillium

Aspergillus

Saccharomyces

Neurospora

The light which promotes germination of fern spores.

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green

Yellow

Red

White

Endosymbiont hypothesis explains origin of.

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cell

Prokaryotic cell

Eukaryotic cell

Ribosome

In hershey & chase experiment, 32p labeled bacteriophages allowed to infect the becteria.During analysis 32 p activity wa detected:

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In culture medium

On the surface of becterial cell

Inside the becteiral cell

Both a and B

Each Okazaki fragment is synthesized by.

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RNA Polymerase

DNA polymerase

DNA polymerase I

DNA polymerase III

The best way to increase food production from ecosystem view point is:

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To increase cultivable land by clearing forest

Use of excessive fertilizers

Use of high quality pesticides

Use of genetically improved varieties of seeds

Rickets is due to deficiency of vitamin.

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A

C

D

E

The release of ovum from the ovary is called.

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Ovulation

Menstruation

follicle atresia

Menace

Bats and humming birds are called.

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Ectotherms

endotherms

Heterotherms

Mesotherms

Repeating units of DNA are called.

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Histones

Nucleosides

Nucleotides

Amino acids

The most critical phase of mitosis, which ensures equal distribution of chromatids in the daughter cells is.

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Prophase

Tele phase

Meta phase

Anaphase

Parathyroid hormone acts to ensure that

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Calcium levels in the blood never drop too low

Sodium levels in urine are constant

Potassium levels in the blood do not escalate

The concentration of water in the blood is sufficient

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