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Physiology And Metabolism — Part 1 MCQs with Explanations

Practice high-yield Biotechnology Engineering MCQs on Physiology And Metabolism — Part 1 with worked academic solutions for PPSC, FPSC, NIH, NTS.

Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC, FPSC, NIH...
Estimated Time
48 mins
Exam-Level PPSC FPSC NIH NTS
Verified for Commission Syllabus • Oct 14, 2026
40

Verified Practice Questions

Interactive test mode with detailed academic worked solutions

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Question 1 of 40
★ PPSC ★ FPSC

Which one of the following plants exhibits both C3 and C4 pathways?

Question 2 of 40
★ PPSC ★ FPSC

The production of ethanol rather than biomass by yeast cells at high concentration of glucose is known as

Question 3 of 40
★ PPSC ★ FPSC

Bacteriorhodopsin is a characteristic features of

Question 4 of 40
★ PPSC ★ FPSC

Gas-Pak system is used for the study of

Question 5 of 40
★ PPSC ★ FPSC

Which one of the following is connecting link between Photosystem I and Photosystem II?

Question 6 of 40
★ PPSC ★ FPSC

Photosynthesis is a/an

Question 7 of 40
★ PPSC ★ FPSC

Plants take up water from the soil predominantly by the adoplastic and symplastic modes of transport. Which one of the following statements is true?

Question 8 of 40
★ PPSC ★ FPSC

Facultative anaerobes are

Question 9 of 40
★ PPSC ★ FPSC

The oxidative photosynthesis carbon cycle salvages

Question 10 of 40
★ PPSC ★ FPSC

Glycolysis is the name given to the pathway involving the conversion of

Question 11 of 40
★ PPSC ★ FPSC

ln a prokaryotic cell the respiratory enzymes are located in

Question 12 of 40
★ PPSC ★ FPSC

Autotrophic organisms include

Question 13 of 40
★ PPSC ★ FPSC

Electron from Cyt-C are carried to molecular O 2 in

Question 14 of 40
★ PPSC ★ FPSC

The first step in photosynthesis is

Question 15 of 40
★ PPSC ★ FPSC

The hydrogen donor in bacterial photosynthesis is usually

Question 16 of 40
★ PPSC ★ FPSC

When sunlight is on the chloroplast, pH is lowest in the

Question 17 of 40
★ PPSC ★ FPSC

The light reaction of photosynthesis does not include?

Question 18 of 40
★ PPSC ★ FPSC

The core functional unit present-in NADH is

Question 19 of 40
★ PPSC ★ FPSC

For metabolic engineering in plants having improved tolerance to osmotic stress, mannitol is overproduced because it

Question 20 of 40
★ PPSC ★ FPSC

Enzyme of TCA cycle in prokaryotic cells are located in

Question 21 of 40
★ PPSC ★ FPSC

Light compensation point is the irradiance at which

Question 22 of 40
★ PPSC ★ FPSC

Organisms that ferment glucose may produce any of the following end products, except

Question 23 of 40
★ PPSC ★ FPSC

In photosynthesis, how many molecules of ATP and NADPH 2 are used?

Question 24 of 40
★ PPSC ★ FPSC

The formation of glucose from non-arbohydrate source is known as

Question 25 of 40
★ PPSC ★ FPSC

Standard redox potential for substance ismeasured under standard condition and is expressed as

Question 26 of 40
★ PPSC ★ FPSC

During glycolysis, fructose-1, 6-diphosphate undergoes-to produce two C3-fragments

Question 27 of 40
★ PPSC ★ FPSC

The uncoupling agent of oxidative phosphorylation is

Question 28 of 40
★ PPSC ★ FPSC

In E. coli, the respiratory chain components are located in the

Question 29 of 40
★ PPSC ★ FPSC

The reduction phase of Calvin-Benson cycle in Arabidpsis is inhibited. This can be attributed to the inactivation of

Question 30 of 40
★ PPSC ★ FPSC

Pyruvic acid acts as

Question 31 of 40
★ PPSC ★ FPSC

During mixed acid fermentation by E. coli, which one of the following is not produced?

Question 32 of 40
★ PPSC ★ FPSC

The number of ATP produced when a molecule of glucose undergoes fermentation

Question 33 of 40
★ PPSC ★ FPSC

Photosynthetic pigments is chloroplasts are embedded in the membrane of

Question 34 of 40
★ PPSC ★ FPSC

Which of the following reactions is suggestive of oxidative decarboxylation?

Question 35 of 40
★ PPSC ★ FPSC

Photosynthesis is a process of converting

Question 36 of 40
★ PPSC ★ FPSC

Anoxic earth become oxygenated due to oxygenic photosynthesis by

Question 37 of 40
★ PPSC ★ FPSC

Phytochromes A and B maximally absorb light at wavelength range

Question 38 of 40
★ PPSC ★ FPSC

Light absorbing antennas of the blue and red algae living at a depth of a metre or more in sea water are called as

Question 39 of 40
★ PPSC ★ FPSC

Cytochrome are

Question 40 of 40
★ PPSC ★ FPSC

A culture can grow independently in two carbon sources, glucose and hexadecane. Identify which one of the following statements is true?

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💡 Examiner's Advisory for Biotechnology Engineering

In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.

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