Review MCQs

Mar 26, 2023

In which of the following steps of respiration CO2 is produced?

Difficulty: Easy

Glycolysis

Krebs cycle

Electron transport chain

All of these

Oxygen takes part in aerobic respiration in

Difficulty: Easy

Glycolysis

Link step between glycolysis and Krebs cycle

Krebs cycle

Electron transport chain

When a plant was kept in darkness for many days its leaves turned yellow. Why?

Difficulty: Easy

Leaves could not get oxygen and so there was no photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

From which bonds of ATP molecule energy is taken?

Difficulty: Easy

P-P bonds

C-H bonds

C-N bonds

C-O bonds

In which component of the leaf cells, chlorophyll is present?

Difficulty: Easy

Stroma

Thylakoids

Plasma membrane

Cytoplasm

Which of these can enter into Krebs cycle?

Difficulty: Hard

Glucose

Pyurvic acid

Citric acid

Acetyla Co-A

When we work hard we suffer from muscle fatigue because muscle cells

Difficulty: Medium

Carry out aerobic respiration at a faster rate and so are tired

Carry out anaerobic respiration and so accumulate more $CO_{2}$

Carry out anaerobic respiration and so accumulate lactic acid

Carry out aerobic respiration at faster rate and so burst

Many molecules of $CO_{2}$ are produced when the Krebs cycle operates once.

Difficulty: Easy

01

02

03

06

In which of the following metabolic processes, do oxidation as well as reduction of molecules occur?

Difficulty: Medium

Photosynthesis

Respiration

Both

None of these

Chlorophyll pigment absorbs maximum light in wavelengths of

Difficulty: Easy

Green and blue

Green and red

Green only

Red and blue

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