Question # 1

The first action spectrum was obtained by.

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T.W. Engelmann

Van Neil

Melvin Calvia

Ernst Haeckel

Daily rhythmic opening and closing of stomata is.

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Internal clock

External clock

Both internal and external clock

None of these

Magnesium is an important untrient ion in green plants as it is an essential component of

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Cell sap

Protein

Chlorophyll

Glucose

Which metal atom is present in chlorophyll.

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Cu

Fe

Mg

K

Photosynthesis II has the form of chlorophyll a which absorb best light of

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670 nm

680 nm

690 nm

700 nm

Which one of the following is not concerned with oxidative phosphorylation.

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Co enzyme Q

Cytochrome b

Cytochrome a3

Plastocyanin

Pyruvic acid the end product of glycolysis before entering the krebs cycle is changed into a two carbon compound.

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Citric acid

Acetic acid

succinic acid

None of these

Accessory photosynthetic pigment xanthophyll's are

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Green in colour

Red in colour

Yellow in colour

None of these

Glycolysis is the break down of

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Fructose

Glucose

Lactose

Maltose

Which one is not the phase of Calvin cycle.

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Carbon fixation

Reduction

Regeneration of CO2 acceptor

Phosphorylation

In the absence of oxygen, yeast cells obtain energy by fermentation, producing CO3, ATP and.

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Acetyl CO-A

Ethanol

Lactate

Pyruvate

Carbon dioxide enters the leaves through

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Stomata

Stroma

Gurad cells

Cuticle

Plastocyanin protein contains.

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Iron

copper

Potassium

Magnesium

Which is stimulus for cyclic phosphorylation.

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Low CO2

Low O2

Low ATP

Low NADPH

Which statement about the chemiosmotic mechanism is not true

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Protons return through the membrane by way of a channel protein

Proton are pumped across a membrane

Proton pumping is associated with the respiratory chain

Has no connection with the respiratory chain

Which statement about oxidative phosphorylation is not true

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Its functions can be served equally well by fermentation

In eukaryotes, its takes place in mitochondria

It is brought about by the chemiosmotic mechanism

It is the formation of ATP during the operation of the respiratory chain

the hypothesis that plants split water as a source of hydrogen was given by.

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Van Niel

Kreb

Pasteur

Calvin

Carbon fixation refers to the initial incorporation of

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Carbon

Oxygen

CO₂

Hydrogen

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Biology Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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