BIO 203 CBT PRACTICE TEST

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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 BIO 203 exam

PS

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

Note

Do not be in a hurry to answer the questions

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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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70 – 100 A

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45 – 49 D

40 – 44 E

0 – 39 F

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Created on February 06, 2024 By Ace/Undergragra

BIO 203

1 / 40

1.

Leaves are not essential for

A. Intake of carbon dioxide

B. photosynthesis

C. starch formation

D. Receive sunlight

2 / 40

2.

Cell theory states that

A. All cell have nuclei

B. Cells are fundamental structural units of plants and animals

C. All cells are living

D. Cell reproduce by mitosis and meiosis

3 / 40

3.

Conversion of solar energy to chemical energy is called

A. Respiration

B. Photosynthesis

C. Transpiration

D. Guttation

4 / 40

4.

Simplest carbohydrates (CnH2mOm) are

A. Peptones

B. Sugars

C. Glucose

D. Galactose

5 / 40

5.

Nitrogen, phosphorus and sulphur are examples of

A. Essential non-metallic elements

B. Essential metallic elements

C. Non-essential non-metallic elements

D. Non-essential metallic elements

6 / 40

6.

Hydrophonics refers to

A. Growing plants without soil

B. All the options

C. Growing plants in soil

D. Growing plants in air

7 / 40

7.

How thick are paraffin embedded sections that has been cut ?

A. 5-8 uM

B. 4-5nm

C. 3-4mm

D. 5-8 nM

8 / 40

8.

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

 

A. upper epidermis

B. palisade mesophyll cells

C. lower epidermis

D. spongy mesophyll cells

9 / 40

9.

Cellular organelles containing hydrolytic enzymes are called

A. Mesosomes

B. Peroxisomes

C. Lysosomes

D. Ribosomes

10 / 40

10.

The byproduct evolved in oxygenic photosynthesis occurs in some

A. Higher organisms

B. Macro organisms

C. Micro organisms

D. Lower organisms

11 / 40

11.

Chlorophyll are

 

A. Accessory pigments

B. Bacteriochlorophylls

C. Carotenoids

D. Primary pigments

12 / 40

12.

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

A. CO2

B. H2O

C. (CH2O)n

D. H2S

13 / 40

13.

Sucrose developed from excess sugars is transported for storage to

A. Seeds

B. Stem Tubers

C. Root tubers

D. All the options

14 / 40

14.

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

15 / 40

15.

Food is converted to energy in

A. Nucleus

B. Nucleolus

C. Mitochondria

D. Chloroplast

16 / 40

16.

Table of Contents

Toggle

The tiny indivisible units that contain light energy are

 

A. neutrons

B. photons

C. protons

D. electrons

17 / 40

17.

Chlorophyll of bacteria are called

A. Primary pigments

B. Accessory pigments

C. Xanthophylls

D. Bacteriochlorophylls

18 / 40

18.

O2 is not evolved in this

 

A. Anoxygenic photosynthesis

B. Test tube-funnel experiment

C. photosynthesis

D. Oxygenic photosynthesis

19 / 40

19.

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

A. O2

B. CO2

C. H2S

D. H20

20 / 40

20.

NADP stands for

A. Nicotinamide Adenine Dinucleotide Phosphate

B. Nitryl Adenine Diphosphate

C. Nicotin Adenine Dinucleotide Pyruvate

D. Nitrate Amine Disaccharide Phosphate

21 / 40

21.

An essential component of chlorophyll molecule is

A. Copper

B. Iron

C. Magnesium

D. Magnanese

22 / 40

22.

Light reactions involve

 

A. Pigments, solar energy and water

B. Pigments and solar energy

C. Pigments and water

D. Pigments

23 / 40

23.

The raw materials for needed for photosynthesis include

A. Nutrients

B. All the options

C. Light

D. Organic Substance

24 / 40

24.

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

A. Photolysis

B. Thermolysis

C. Electrolysis

D. Hydrolysis

25 / 40

25.

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

 

A. upper epidermis

B. spongy mesophyll cells

C. Lower epidermis

D. palisade mesophyll cells

26 / 40

26.

Plasma membrane is composed of

A. Protein

B. Lipids

C. Cellulose

D. Protein and Lipids

27 / 40

27.

The main difference between animal and plant cell is that

A. Plant cells have small vacuoles

B. Plant cell lack rigid cell wall

C. Animal cells have vacuoles

D. Animal cell lack rigid cell wall

28 / 40

28.

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

A. Hematoxylin and eosin

B. Blue trichrome

C. Toluidine blue

D. Sudan III

29 / 40

29.

Amino acids are assimilated to form

A. New protoplasm

B. New cytoplasm

C. New shoot cells

D. New cell walls

30 / 40

30.

Phosphorylation is the synthesis of

 

A. ADP

B. ATP

C. NADP

D. FMN

31 / 40

31.

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

 

A. 0.4 mm

B. 0.2 uM

C. 0.1 nM

D. 3.0 uM

32 / 40

32.

Simplest carbohydrates (CnH2nOn) are

A. Sugars

B. Glucose

C. Galactose

D. Peptones

33 / 40

33.

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

34 / 40

34.

Ribosomes help in

A. Lipid Synthesis

B. Photosyntheis

C. Protein synthesis

D. Respiration

35 / 40

35.

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

A. Mineral nutrients

B. Carbon dioxide (CO2)

C. Essential non-metallic elements

D. Essential metallic elements

36 / 40

36.

How can you achieve better resolution in microscopy ?

 

A. Using paraffin-embedded sections

B. Using formaldehyde-embedded sections

C. Using thinner resin-embedded sections

D. Using a mixture of paraffin and resin

37 / 40

37.

Light dependent stage cannot be carried out without

A. All of the options

B. Oxygen

C. Water

D. carbon dioxide

38 / 40

38.

Through enzyme pepsin, proteins can be changed to

A. Amino acids

B. Cellulose

C. Fatty acids

D. Polypeptides

39 / 40

39.

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. 40 S and 30 S

C. 50 S and 20S

D. 50 S and 30 S

40 / 40

40.

The chlorophyll is found in oval-shaped structures called as

A. centrioles

B. chloroplast

C. starch

D. stomata

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