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

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

Note

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Created on February 06, 2024 By Ace/Undergragra

PHS 211

1 / 40

1.

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

A. Electrolysis

B. Photolysis

C. Thermolysis

D. Hydrolysis

2 / 40

2.

Photosynthesis pigments other than chlorophyll are called

A. Phycobilirs

B. Carotenoids

C. Accessory pigments

D. Primary pigments

3 / 40

3.

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

A. Carbon dioxide (CO2)

B. Essential metallic elements

C. Essential non-metallic elements

D. Mineral nutrients

4 / 40

4.

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

A. 50 S and 20S

B. 40 S and 30 S

C. 60 S and 10 S

D. 50 S and 30 S

5 / 40

5.

To facilitate entry of CO2 in leaf is done through stomata as well as through water film on the

 

A. Lower epidermis

B. palisade mesophyll cells

C. spongy mesophyll cells

D. upper epidermis

6 / 40

6.

The tiny indivisible units that contain light energy are

 

A. photons

B. protons

C. electrons

D. neutrons

7 / 40

7.

To facilitate entry of CO2 in leaf is done through stomata as well as through water film on the

 

A. lower epidermis

B. spongy mesophyll cells

C. upper epidermis

D. palisade mesophyll cells

8 / 40

8.

Plants can be called as

A. Heterotrophy

B. Photoautotroph

C. Autotrophs

D. Chemoautotrophs

9 / 40

9.

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

 

A. Enzyme

B. vitamin

C. pigment

D. protein

10 / 40

10.

Biochemically, Photosynthesis is defined as

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

B. Synthesis with the help of light

C. Energy tranducing process

D. Conversion of solar energy to chemical energy

11 / 40

11.

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

A. H2S

B. O2

C. CO2

D. H20

12 / 40

12.

How thick are paraffin embedded sections that has been cut ?

A. 5-8 nM

B. 3-4mm

C. 4-5nm

D. 5-8 uM

13 / 40

13.

Simplest carbohydrates (CnH2mOm) are

A. Peptones

B. Galactose

C. Sugars

D. Glucose

14 / 40

14.

The photosynthetic pigments are located in the thylakoid membranes of

 

A. Cytoplasts

B. Protoplasts

C. Chloroplasts

D. Leucoplasts

15 / 40

15.

O2 is not evolved in this

 

A. Oxygenic photosynthesis

B. Anoxygenic photosynthesis

C. Test tube-funnel experiment

D. photosynthesis

16 / 40

16.

The main difference between animal and plant cell is that

A. Animal cell lack rigid cell wall

B. Plant cell lack rigid cell wall

C. Plant cells have small vacuoles

D. Animal cells have vacuoles

17 / 40

17.

What are epoxy resin sections stained with after being cut with a microtome?

A. Blue trichrome

B. Hematoxylin and eosin

C. Toluidine blue

D. Sudan III

18 / 40

18.

Cellular organelles containing hydrolytic enzymes are called

A. Peroxisomes

B. Mesosomes

C. Lysosomes

D. Ribosomes

19 / 40

19.

Nitrogen, phosphorus and sulphur are examples of

A. Non-essential metallic elements

B. Non-essential non-metallic elements

C. Essential metallic elements

D. Essential non-metallic elements

20 / 40

20.

NADP stands for

A. Nitrate Amine Disaccharide Phosphate

B. Nicotin Adenine Dinucleotide Pyruvate

C. Nicotinamide Adenine Dinucleotide Phosphate

D. Nitryl Adenine Diphosphate

21 / 40

21.

Chlorophyll are

 

A. Bacteriochlorophylls

B. Accessory pigments

C. Carotenoids

D. Primary pigments

22 / 40

22.

Extra nuclear DNA is found in

A. Endoplasmic reticulum

B. Ribosomes

C. Chloroplast

D. Nucleus

23 / 40

23.

The raw material for photosynthesis are

A. Light energy, CO2 and H2O

B. Light energy

C. Light energy and CO2

D. Light energy, CO2, H2O and photosynthesis pigments

24 / 40

24.

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

 

A. 3.0 uM

B. 0.4 mm

C. 0.2 uM

D. 0.1 nM

25 / 40

25.

The pigments which are highly efficient in absorbing solar energy are

A. Chlorophylls

B. Xanthophylls

C. Carotenoids

D. Phycobilins

26 / 40

26.

Through enzyme pepsin, proteins can be changed to

A. Amino acids

B. Fatty acids

C. Polypeptides

D. Cellulose

27 / 40

27.

Food is converted to energy in

A. Mitochondria

B. Chloroplast

C. Nucleolus

D. Nucleus

28 / 40

28.

The byproduct evolved in oxygenic photosynthesis occurs in some

A. Higher organisms

B. Micro organisms

C. Macro organisms

D. Lower organisms

29 / 40

29.

Sugar is transported away from leaf through

 

A. Phloem tissues

B. Loosely arranged spongy tissues

C. Bean like stomata cells

D. Closely packed palisade cells

30 / 40

30.

Simplest carbohydrates (CnH2nOn) are

A. Galactose

B. Sugars

C. Peptones

D. Glucose

31 / 40

31.

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

A. ADP and NAD

B. All the options

C. ATP and NADP

D. ATP and NADPH

32 / 40

32.

Conversion of solar energy to chemical energy is called

A. Respiration

B. Photosynthesis

C. Transpiration

D. Guttation

33 / 40

33.

Mitochondria was first seen by

A. Robert Hooke

B. Altmann

C. Lipmann

D. Robert Brown

34 / 40

34.

How can you achieve better resolution in microscopy ?

 

A. Using formaldehyde-embedded sections

B. Using thinner resin-embedded sections

C. Using paraffin-embedded sections

D. Using a mixture of paraffin and resin

35 / 40

35.

Table of Contents

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Hydrophonics refers to

A. Growing plants in soil

B. All the options

C. Growing plants in air

D. Growing plants without soil

36 / 40

36.

Chlorophyll of bacteria are called

A. Primary pigments

B. Accessory pigments

C. Xanthophylls

D. Bacteriochlorophylls

37 / 40

37.

The chlorophyll is found in oval-shaped structures called as

A. starch

B. stomata

C. centrioles

D. chloroplast

38 / 40

38.

Ribosomes help in

A. Protein synthesis

B. Photosyntheis

C. Lipid Synthesis

D. Respiration

39 / 40

39.

An essential component of chlorophyll molecule is

A. Magnesium

B. Copper

C. Iron

D. Magnanese

40 / 40

40.

Amino acids are assimilated to form

A. New cell walls

B. New cytoplasm

C. New shoot cells

D. New protoplasm

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