Biology/Biology MCQ Question - Bioenergetics Sample Test,Sample questions

Question:
About _______ % of photosynthesis is carried by terrestrial plants, while rest occurs in ocean, lakes, and ponds.

1.10%

2.20%

3.30%

4.40%


Question:
Air contains ______ % of CO2

1.0.02-0.03

2.0.03-0.04

3.0.04-0.05

4.0.05-0.06


Question:
At which times there is no net gaseous exchange between leaves and the atmosphere.

1.Day time.

2.Night time.

3.Dawn & Dusk.

4.Mid night.


Question:
Bacteriochlorophylls does not include

1.Chlorophyll e

2.Chlorophyll d

3.Chlorophyll a

4.Chlorophyll c


Question:
C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:

1.Photosynthesis

2.Aerobic respiration

3.Anaerobic respiration

4.Respiration


Question:
Carotenoids perform protective function in

1.Animals

2.Plants

3.Both of these

4.None of these


Question:
Chlorophyll is insoluble in:

1.Carbon tetrachloride

2.Alcohol

3.Organic solvents

4.Water


Question:
Chlorophylls are found embedded in the ______ membranes

1.Stroma

2.Grana

3.Thylakoid

4.Intergrana


Question:
Chlorophylls mainly absorb ____ wavelengths

1.Orange - blue

2.Violet - red

3.Yellow - orange

4.Orange - red.


Question:
Complete breakdown of glucose molecule takes place in which of the following:

1.Alcoholic fermentation

2.Lactic acid fermentation

3.Aerobic respiration.

4.All of these


Question:
Deficiency of ________ causes yellowing in plants

1.Magnesium

2.Iron

3.Chlorine

4.Oxygen


Question:
First Actions spectrum was obtained by using

1.Algae

2.Fungi

3.Bacteria

4.Spirogyra


Question:
Glycolysis takes place in:

1.Nucleus

2.Cytosol

3.Mitochondria

4.Ribosomes


Question:
In alcoholic fermentation Pyruvic acid is broken down into:

1.Acetaldehyde

2.Methyl alcohol

3.Ethyl alcohol.

4.Lactic acid.


Question:
In all plants the major sites of phosynthesis are

1.Leaves respire and utilize O2 and release CO2.

2.Stems

3.Roots

4.Branches


Question:
In Anaerobic respiration only _____ % of the energy present within the chemical bond of glucose is converted into ATP.

1.1%

2.2%

3.3%

4.4%


Question:
In which of the following component of the body, lactic acid fermentation takes place:

1.Brain

2.Heart

3.Liver

4.Muscles


Question:
Light reaction takes place on/in

1.Thylakoid

2.Storma

3.Chloroplast

4.Grana


Question:
Molecular formula of chlorophyll b is

1.C55 H10 O4 N6 Mg

2.C55 H70 O6 N5 Mg

3.C55 H71 O6 N4 Mg

4.C55 H70 O6 N4 Mg


Question:
NADPH2 provides

1.assimilatory power

2.chemical energy

3.energized electrons

4.All of these


Question:
Net yield of H2O in Photosynthesis is

1.1 molecule

2.6 molecules

3.3 molecules

4.0 molecule


Question:
Of the following, which one causes higher production of food in green plants

1.Blue

2.Orange

3.Red

4.Violet


Question:
Of the following, which one light - gathering

1.Antenna complex

2.Reaction centre

3.Photosystem

4.None of these


Question:
Photosynthesis carried out by terrestrial plants is ____ of total photosynthesis.

1.1-2%

2.5%

3.10%

4.20%


Question:
Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.

1.Organic

2.Energy rich

3.Energy poor

4.Reduced


Question:
Photosystem II has molecules which absorbs maximum light of

1.680 nm

2.100 m

3.700 nm

4.670 nm


Question:
PS I has chlorophyll a molecule which absorbs maximum light of _____ nm.

1.600

2.650

3.680

4.700


Question:
Quantitative study of energy relationships in biological systems obeys.

1.Bioenergetics

2.Laws of thermodynamics

3.Laws of thermo chemistry

4.Laws of chemical energetic


Question:
Reduction in photosynthesis is of

1.O2

2.CO2

3.H2O

4.light energy


Question:
Stomata cover only _________ of leaf surface.

1.0.03 - 0.04%

2.10%

3.1-2 %

4.50%


Question:
The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as

1.Hydrophilic

2.Hydrophobic

3.Both of these

4.None of these


Question:
The dense fluid filled region in the chloroplast is

1.Grana

2.Stroma

3.Thylakoid

4.None of these


Question:
The first action spectrum was obtained by

1.T.W.Englemam

2.Malleus

3.T.W.Inws

4.W.Stapes


Question:
The most important photosynthetic pigment

1.Chlorophyll a

2.Chlorophyll b

3.Xanthophyll

4.Carotenes


Question:
The organisms able to use sunlight directly as a source of energy are

1.Plants

2.Animals

3.Omnivores

4.Fungi


Question:
The percentage of light absorbed by the leaf

1.20%

2.15%

3.10%

4.1%


Question:
The point at which there is no net exchange of gases between leaves and atmosphere is known as

1.Neutral point

2.Compensation point

3.Parallel point

4.Competitive point


Question:
Thylakoids in chloroplasts are stacked into

1.Grana

2.Stroma

3.Nucleus

4.None of these


Question:
Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on

1.Bacteria

2.Algae

3.Protenema

4.Cyanobacteria


Question:
Visible light used in photosynthesis ranges from:

1.300 - 700 nm in wavelength

2.350 - 750 nm in wavelength

3.380 - 750 nm in wavelength

4.390 - 790 nm in wavelength.


Question:
Which is the correct order of energy transfer from assessory pigments to main photosynthetic pigment?

1.Carotenoids ? Chlorophyll a ? Chlorophyll b.

2.Chlorophyll b ? Carotenoids ? Chlorophyll a.

3.Carotenoids ? Chlorophyll b ? Chlorophyll a.

4.Chlorophyll a ? Chlorophyll b ? Carotenoids.


Question:
Which of the following is a chemical link between catabolism and anabolism?

1.AMP

2.ADP

3.ATP

4.All of these


Question:
Which of the following is a compensation point:

1.Leaves respire and utilize O2 and release CO2.

2.Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.

3.Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.

4.Rate of respiration becomes more than rate of photosynthesis.


Question:
Which of the following light is least absorbed by the plants:

1.Orange

2.Red

3.Blue

4.Green


Question:
Which of the following pigment is Blue- green in colour:

1.Chlorophyll a

2.Chlorophyll b.

3.Chlorophyll c

4.Chlorophyll d.


Question:
Which of the following statement about the head of a chlorophyll molecule is incorrect:

1.It is a porphyrin ring or tetrapyrrole ring structure

2.It is flat, square and light absorbing

3.Composed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.

4.It is hydrophobic


Question:
Which of the light is mainly absorbed by the plants:

1.Orange

2.Red

3.Green

4.Both A and B


Question:
Xanthophylls are ______ pigments

1.Yellow

2.Red

3.Orange

4.Green


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