PHS 211 CBT PRACTICE TEST

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace PHS 211 exam

PS

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

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Move as fast as possible and starting with questions that don’t have calculation first to save time

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Created on February 06, 2024 By Ace/Undergragra

PHS 211

1 / 40

1.

Cell theory states that

A. Cells are fundamental structural units of plants and animals

B. All cell have nuclei

C. Cell reproduce by mitosis and meiosis

D. All cells are living

2 / 40

2.

Light dependent stage cannot be carried out without

A. All of the options

B. Oxygen

C. carbon dioxide

D. Water

3 / 40

3.

When water is used as the proton and electron source the byproduct evolved is

A. H2S

B. O2

C. CO2

D. H20

4 / 40

4.

An essential component of chlorophyll molecule is

A. Iron

B. Magnesium

C. Magnanese

D. Copper

5 / 40

5.

In dark reaction, these are required for the reduction of CO2 to carbohydrates

A. ATP and NADPH

B. ATP and NADP

C. All the options

D. ADP and NAD

6 / 40

6.

Simplest carbohydrates (CnH2nOn) are

A. Sugars

B. Glucose

C. Galactose

D. Peptones

7 / 40

7.

Directly linked pigments to photosynthetic electron transport are

A. Carotenoids

B. Xanthophylls

C. Chlorophylls

D. Phycobilins

8 / 40

8.

Cellular organelles containing hydrolytic enzymes are called

A. Lysosomes

B. Ribosomes

C. Peroxisomes

D. Mesosomes

9 / 40

9.

Biochemically, Photosynthesis is defined as

A. Reduction of CO2 to carbohydrates with the help of ATP and NADPH

B. Energy tranducing process

C. Conversion of solar energy to chemical energy

D. Synthesis with the help of light

10 / 40

10.

The sedimentation constant of ribosome is generally 70S . Its breaks up into two subunits whose sedimentation constants are

A. 60 S and 10 S

B. 50 S and 20S

C. 50 S and 30 S

D. 40 S and 30 S

11 / 40

11.

Carbon dioxide (CO2) taken in night is stored in form of

 

A. Chemical energy

B. Physical energy

C. Carbon Monoxide

D. dark energy

12 / 40

12.

Sugar is transported away from leaf through

 

A. Phloem tissues

B. Closely packed palisade cells

C. Loosely arranged spongy tissues

D. Bean like stomata cells

13 / 40

13.

Photosynthesis pigments other than chlorophyll are called

A. Accessory pigments

B. Carotenoids

C. Primary pigments

D. Phycobilirs

14 / 40

14.

The raw materials for needed for photosynthesis include

A. Organic Substance

B. Light

C. Nutrients

D. All the options

15 / 40

15.

Chlorophyll of bacteria are called

A. Bacteriochlorophylls

B. Xanthophylls

C. Primary pigments

D. Accessory pigments

16 / 40

16.

Reducing power of light reaction is

A. ATP

B. NADPH

C. NAD

D. ADP

17 / 40

17.

O2 is not evolved in this

 

A. Test tube-funnel experiment

B. Oxygenic photosynthesis

C. Anoxygenic photosynthesis

D. photosynthesis

18 / 40

18.

The main difference between animal and plant cell is that

A. Plant cells have small vacuoles

B. Animal cell lack rigid cell wall

C. Plant cell lack rigid cell wall

D. Animal cells have vacuoles

19 / 40

19.

Extra nuclear DNA is found in

A. Nucleus

B. Endoplasmic reticulum

C. Ribosomes

D. Chloroplast

20 / 40

20.

An organic molecule which can absorb the solar energy in the visible region is

 

A. vitamin

B. pigment

C. Enzyme

D. protein

21 / 40

21.

A segment of image is magnified by the eyepiece(ocular). What is the best resolving power?

 

A. 3.0 uM

B. 0.2 uM

C. 0.1 nM

D. 0.4 mm

22 / 40

22.

How can you achieve better resolution in microscopy ?

 

A. Using thinner resin-embedded sections

B. Using formaldehyde-embedded sections

C. Using a mixture of paraffin and resin

D. Using paraffin-embedded sections

23 / 40

23.

The chlorophyll is found in oval-shaped structures called as

A. centrioles

B. chloroplast

C. starch

D. stomata

24 / 40

24.

Light reactions involve

 

A. Pigments, solar energy and water

B. Pigments

C. Pigments and solar energy

D. Pigments and water

25 / 40

25.

Table of Contents

Toggle

Simplest carbohydrates (CnH2mOm) are

A. Sugars

B. Peptones

C. Glucose

D. Galactose

26 / 40

26.

Chlorophyll are

 

A. Accessory pigments

B. Carotenoids

C. Primary pigments

D. Bacteriochlorophylls

27 / 40

27.

Nitrogen, phosphorus and sulphur are examples of

A. Non-essential metallic elements

B. Essential metallic elements

C. Essential non-metallic elements

D. Non-essential non-metallic elements

28 / 40

28.

What staining is best for lipid detection ?

A. Sudan III IV

B. Feulgens nuclear reaction

C. Colloid gold

D. Berlin blue

29 / 40

29.

How thick are paraffin embedded sections that has been cut ?

A. 4-5nm

B. 3-4mm

C. 5-8 uM

D. 5-8 nM

30 / 40

30.

Digested food materials are carried to all parts of plant especially

A. all of the options

B. root apices

C. leaves

D. stem

31 / 40

31.

Through enzyme pepsin, proteins can be changed to

A. Polypeptides

B. Fatty acids

C. Amino acids

D. Cellulose

32 / 40

32.

Even in presence of sunlight and water, photosynthesis cannot occur due to lack of

A. Essential non-metallic elements

B. Carbon dioxide (CO2)

C. Essential metallic elements

D. Mineral nutrients

33 / 40

33.

The protons and electrons required to reduce NADP⁺ to NADPHcome from

A. CO2

B. (CH2O)n

C. H2O

D. H2S

34 / 40

34.

Photolysis means

 

A. Splitting of water molecules

B. Light reaction

C. Splitting of light

D. Photophosphorylation

35 / 40

35.

The tiny indivisible units that contain light energy are

 

A. protons

B. photons

C. neutrons

D. electrons

36 / 40

36.

NADP stands for

A. Nitryl Adenine Diphosphate

B. Nicotin Adenine Dinucleotide Pyruvate

C. Nitrate Amine Disaccharide Phosphate

D. Nicotinamide Adenine Dinucleotide Phosphate

37 / 40

37.

Phosphorylation is the synthesis of

 

A. NADP

B. ADP

C. ATP

D. FMN

38 / 40

38.

The process of splitting water molecules in the presence of light energy is called

A. Electrolysis

B. Thermolysis

C. Hydrolysis

D. Photolysis

39 / 40

39.

The raw material for photosynthesis are

A. Light energy, CO2 and H2O

B. Light energy and CO2

C. Light energy

D. Light energy, CO2, H2O and photosynthesis pigments

40 / 40

40.

Ribosomes help in

A. Photosyntheis

B. Lipid Synthesis

C. Protein synthesis

D. Respiration

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