Question # 1

Families are grouped into _____________

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Classes

Phyla

Order

Species

Minimum energy required to start a chemical reaction is called:

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Potential energy

Chemical energy

Activation energy

All are same

The site for Calvin cycle is:

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Stroma

Grana

Plasmodesmata

Cytoplast

There is separation of oxygenated and deoxygenated blood in birds and mammals because:

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The ventricles are completely divided

The ventral aorta is divided into aortic and pulmonary trunk.

The aortic arch is divided into two systemic arches.

None of the above

The body of which organism consists only of RNA?

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Prions

Viroids

Viruses

Algae

Which event distinguishes meiosis form mitosis?

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Condensation of chromosomes

Loss of the nuclear membrane

Formation of metaphase plate

Pairing of homologous chromosomes

.................. does not require sunlight.

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Photosynthesis

Respiration

Both

None

Chloroplast is bounded by ................ membrane.

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Single

Double

Triple

None

Who proof Virchow's hypothesis?

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Lais Pastem

RudolF

Schledien

Schawnn

things like manure, seaweed, sewage etc are example of .............. fertilizers.

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Organic

Inorganic

Both

None

Rhesus factor was first identified in Rhesus .............. .

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Dog

Monkey

Cat

Gorilla

Cell walls are found in these organisms, except for _________

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Plants

Animals

Becteria

Fungi

Electron transport chain takes place in:

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Mitochondria

Cytoplasm

Nucleus

Ribosomes

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