Question # 1

Before pyruvate enters the citric acid cycle, it is decarboxylated, oxidized and combined with coenzyme A forming acetyl CoA, carbon dioxide and one molecule of

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NADH

FADH₂

ATP

ADP

If protein part of co factor is covalently bond to enzyme, it is called is.

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Co- Enzyme

Prosthetic group

Activator

apoezyme

When cocci occur in pairs, their arrangement.

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Tetrad

Diplococcus

Streptococci

Sarcina

The activation energy of the reaction is lowered by

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Co enzyme

Enzyme

Product

Substrate

Ustilago species are most common.

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Smult fungi

Yeast

Mold

Rust fungi

Which one of the following is not a sub phylum to choradata.

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Urochoradata

Cephalochordata

Hemichordata

Vertebrata

Accessory photosynthetic pigment xanthophyll's are

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Green in colour

Red in colour

Yellow in colour

None of these

Algae have shells composed of halves that five fit together like Petri dish belong to

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Brown algae

Diatoms

Euglenoids

Green algae

There are ...... known species of plants

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120000

227000

360000

412000

The loss of liquid water through hydathodes in plants is called

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Imbibition

Transpiration

Bleeding

Guttation

AIDS is caused by

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H-virus

TMV

HIV

D- virus

Magnesium is an important nutrient ion in green plant as it is an essential component of

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Cell sap

Protean

chlorophyll

Glucose

Which one of the example of living general of psilopsida.

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Psilophyton

Horneophyton

Psilotum

Cooksonia

The respiratory system is most efficient in ______

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Man

Bird

Fish

Snake

The fluid filled region of the chloroplast is.

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Matrix

cisternae

Stroma

cytoplasm

Round worm are.

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Acoelomates

Pseudocoelomates

Coelomates

None of them

Actinopods with glassy shells are.

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Rotifers

Radiolarians

Diatorms

Forams

The active site of an enzyme

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Never changes

Forms no chemical bond with substrate

Determines by its structure the specificity of an enzyme

Looks like a lump projection from the surface of an enzyme

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