Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

The oxygen which is released during the process of photosynthesis comes from

A. hydrogen
B. leaves
C. water
D. None of Above
Answer» D. None of Above
Discussion
2.

Alcoholic fermentation and Lactic acid fermentation are

A. aerobic
B. anaerobic
C. partially aerobic
D. None of Above
Answer» C. partially aerobic
Discussion
3.

The phases of Calvin cycle involves

A. carbon fixation
B. reduction
C. regeneration
D. All of Above
Answer» E.
Discussion
4.

The tail attached to the pyrrole ring is called

A. porpyrin
B. tail
C. phytol
D. None of Above
Answer» D. None of Above
Discussion
5.

The chloroplast is present inside the leaf within tissue called

A. mesophyll
B. microphyll
C. epidermis
D. None of Above
Answer» B. microphyll
Discussion
6.

Chlorophyll (a) has the ability to absorb the wave length of light

A. blue-red
B. blue-green
C. yellow green
D. yellow blue
Answer» C. yellow green
Discussion
7.

The leaves are the major sites for the presence of

A. lamina
B. branches
C. chloroplast
D. None of Above
Answer» D. None of Above
Discussion
8.

The specialized molecule which traps high energy electron and to electron carriers is

A. primary acceptor
B. electron acceptor
C. primary electron acceptor
D. electron acceptor
Answer» D. electron acceptor
Discussion
9.

Glycol sis mean splitting of

A. nitrogen
B. oxygen
C. sugar
D. protein
Answer» D. protein
Discussion
10.

The study of energy relationships and energy conversions in biological systems is termed as

A. microbiology
B. biotechnology
C. bioenergetics
D. None of Above
Answer» D. None of Above
Discussion
11.

Cytochrome is oxidized by

A. atom of oxygen
B. electrons
C. protons
D. A and B
Answer» E.
Discussion
12.

T.W.Engleman in 1833 obtained the first action spectrum while working on

A. bacteria
B. virus
C. spirogyra
D. None of Above
Answer» D. None of Above
Discussion
13.

The molecule of chlorophyll is composed of

A. hydrophyllic head
B. tail
C. Both A and B
D. None of Above
Answer» D. None of Above
Discussion
14.

Photosynthesis occur in time of

A. day
B. night
C. all the time
D. winters
Answer» B. night
Discussion
15.

The process of photosynthesis cannot occur in the absence of

A. oxygen
B. carbon dioxide
C. Both A and B
D. None of Above
Answer» C. Both A and B
Discussion
16.

The chlorophyll which is found in photosynthetic bacteria is known as

A. bacteriphylls
B. bacteriochlorophylls
C. bacteriophtosynthetic
D. bacteriophage
Answer» C. bacteriophtosynthetic
Discussion
17.

The type of respiration which humans adopt in severe physical activities is

A. aerobic
B. anaerobic
C. fermentation
D. accumulation
Answer» C. fermentation
Discussion
18.

Light is the form of energy called

A. electromagnetic energy
B. radiations
C. Both A and B
D. None of Above
Answer» D. None of Above
Discussion
19.

The most abundant and most important photosynthetic pigment is

A. chlorophyll-a
B. chlorophyll-b
C. chlorophyll-c
D. chlorophyll-d
Answer» B. chlorophyll-b
Discussion
20.

During dark reactions the energy is stored in the molecules of

A. carbon
B. oxygen
C. sugar
D. None of Above
Answer» D. None of Above
Discussion
21.

The splitting of water molecule releasing oxygen is called

A. photosynthesis
B. photolysis
C. photolytic
D. photophosphorylation
Answer» C. photolytic
Discussion
22.

The special complex which is build in thylakoid membrane which helps in moving down gradient is called

A. ATP complex
B. ATP synthetase
C. ATP synthase
D. None of Above
Answer» D. None of Above
Discussion
23.

In photosynthesis carbon dioxide, light and water are

A. reactants
B. products
C. by-products
D. None of Above
Answer» B. products
Discussion
24.

porphyrin ring in hemoglobin molecules have in center an atom of

A. magnesium
B. iron
C. hydrogen
D. None of Above
Answer» C. hydrogen
Discussion
25.

WHAT_IS_REDUCTION_POTENTIAL??$

A. The molecule loses an electron
B. An atom/molecule gains an electron
C. Reducing the power of an electron
D. Oxidation power of an electron
Answer» C. Reducing the power of an electron
Discussion
26.

WHAT_IS_THE_NAME_OF_THE_MOLECULE_WHICH_DONATES_ITS_ELECTRONS??$

A. Reducing agent
B. Oxidative agent
C. Standard reduction potential
D. Oxidant
Answer» B. Oxidative agent
Discussion
27.

Which of the following act as a storage form of high energy phosphate?

A. Glucose-6-phosphate
B. Phosphoenolpyruvate
C. Phosphagens
D. Glycerol phosphate
Answer» D. Glycerol phosphate
Discussion
28.

What is the standard free energy change of ATP?

A. Small and negative
B. Large and positive
C. Large and negative
D. Small and positive
Answer» D. Small and positive
Discussion
29.

Which of the following equation gives the relationship between ∆G֯ and Keq?$

A. ∆G֯ = -RT ln K<sub>eq</sub>
B. ∆G֯ = ln K<sub>eq</sub>
C. ∆G = ∆G֯ (-RT K<sub>eq</sub>)
D. ∆G = -RT ln K<sub>eq</sub>
Answer» B. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫G‚àö‚àë‚àö√≤ = ln K<sub>eq</sub>
Discussion
30.

Which of the following factor is not responsible for the actual change in free energy (∆G)?$

A. Temperature
B. Pressure
C. The initial concentration of reactant and products
D. pH
Answer» E.
Discussion
31.

What is the value of ∆G, when a system is in equilibrium?$

A. ∆G = 0
B. ∆G = 1
C. ∆G = -1
D. ∆G = ∆G֯
Answer» B. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫G = 1
Discussion
32.

Which of the following equation shows the relationship between free energy change (∆G) and the change in entropy (∆S), under constant temperature and pressure?$

A. ∆G = T∆H – ∆S
B. ∆G = T∆H/∆S
C. ∆G = ∆H/T∆S
D. ∆G = ∆H – T∆S
Answer» E.
Discussion
33.

Gibb’s free energy is the portion of the total energy which is available for useful work.$

A. True
B. False
Answer» B. False
Discussion
34.

Law of thermodynamics which states that energy can neither be created nor be destroyed is ___________

A. The second law of thermodynamics
B. Third law of thermodynamics
C. First law of thermodynamics
D. Zero-order kinetics
Answer» D. Zero-order kinetics
Discussion