Question # 1

................. produce bile.

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Stomach

Liver

Intestine

All

The exchange of parts of non-sister chromatids is called:

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Chiasmata

Linkage

Crossing over

None of these

Which of the following blood vessels have oxygenated blood?

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Pulmonary artery

Pulmonary vein

Superior vena cave

Inferior vena cave

The substance on which an enzyme act is called:

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Cofactor

Inhabitor

Coenzyme

Substrate

For mitosis, the chromosomes of the cells are duplicated during interphase. When do the chromosomes duplicated for meiosis?

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Before meiosis 1

Before meiosis 2

During Meiosis 1

Do not duplicate

Stomach open into ............... .

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Small intestine

Large intestine

Both a and b

None

Down's sayndrome is an autosomal non-disjunction of chromosomes number ............. .

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22

12

21

14

The building units of enzymes are:

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Fatty acids

Glycerol

Nucleic acid

Amino acid

Cellular eating is called:

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Pinocytosis

Endocytosis

Phagocytosis

None

In Pakistan there are about _____________ kinds of plants.

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3000

4000

5000

6000

Anaerobic respiration is of ......... types.

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Two

Three

Four

Five

Binomial nomenclature was proposed by _____________

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Linnaeus

Aristotle

Whittaker

Al Jahiz

Chromosomes condensation occurs during .............. .

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G1-phase

G2-phase

S-phase

Interphase

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