BIO 203 CBT PRACTICE TEST

Phil February 9, 2024Last Updated: February 9, 2024

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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

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

Do not waste time on a question you don’t know

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

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

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70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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BIO 203

1 / 40

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

2 / 40

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

A. Carbon Monoxide

B. Chemical energy

C. Physical energy

D. dark energy

3 / 40

Simplest carbohydrates (CnH2nOn) are

A. Galactose

B. Sugars

C. Glucose

D. Peptones

4 / 40

The raw materials for needed for photosynthesis include

A. Nutrients

B. Light

C. Organic Substance

D. All the options

5 / 40

Photolysis means

A. Splitting of light

B. Photophosphorylation

C. Light reaction

D. Splitting of water molecules

6 / 40

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

A. upper epidermis

B. lower epidermis

C. palisade mesophyll cells

D. spongy mesophyll cells

7 / 40

The byproduct evolved in oxygenic photosynthesis occurs in some

A. Lower organisms

B. Higher organisms

C. Macro organisms

D. Micro organisms

8 / 40

Conversion of solar energy to chemical energy is called

A. Photosynthesis

B. Transpiration

C. Guttation

D. Respiration

9 / 40

How can you achieve better resolution in microscopy ?

A. Using paraffin-embedded sections

B. Using formaldehyde-embedded sections

C. Using a mixture of paraffin and resin

D. Using thinner resin-embedded sections

10 / 40

10.

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

A. H2O

B. CO2

C. H2S

D. (CH2O)n

11 / 40

11.

Ribosomes help in

A. Respiration

B. Lipid Synthesis

C. Photosyntheis

D. Protein synthesis

12 / 40

12.

Cell theory states that

A. All cell have nuclei

B. Cell reproduce by mitosis and meiosis

C. Cells are fundamental structural units of plants and animals

D. All cells are living

13 / 40

13.

Phosphorylation is the synthesis of

A. ADP

B. ATP

C. NADP

D. FMN

14 / 40

14.

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

A. H20

B. H2S

C. CO2

D. O2

15 / 40

15.

NADP stands for

A. Nitryl Adenine Diphosphate

B. Nicotin Adenine Dinucleotide Pyruvate

C. Nicotinamide Adenine Dinucleotide Phosphate

D. Nitrate Amine Disaccharide Phosphate

16 / 40

16.

Amino acids are assimilated to form

A. New shoot cells

B. New cell walls

C. New protoplasm

D. New cytoplasm

17 / 40

17.

Light reactions involve

A. Pigments

B. Pigments and water

C. Pigments and solar energy

D. Pigments, solar energy and water

18 / 40

18.

The photosynthetic pigments are located in the thylakoid membranes of

A. Leucoplasts

B. Cytoplasts

C. Chloroplasts

D. Protoplasts

19 / 40

19.

Biochemically, Photosynthesis is defined as

A. Conversion of solar energy to chemical energy

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

C. Synthesis with the help of light

D. Energy tranducing process

20 / 40

20.

Light dependent stage cannot be carried out without

A. All of the options

B. carbon dioxide

C. Oxygen

D. Water

21 / 40

21.

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

A. Essential non-metallic elements

B. Essential metallic elements

C. Mineral nutrients

D. Carbon dioxide (CO2)

22 / 40

22.

Extra nuclear DNA is found in

A. Chloroplast

B. Endoplasmic reticulum

C. Nucleus

D. Ribosomes

23 / 40

23.

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

A. Thermolysis

B. Hydrolysis

C. Photolysis

D. Electrolysis

24 / 40

24.

Sugar is transported away from leaf through

A. Phloem tissues

B. Bean like stomata cells

C. Loosely arranged spongy tissues

D. Closely packed palisade cells

25 / 40

25.

The chlorophyll is found in oval-shaped structures called as

A. chloroplast

B. starch

C. stomata

D. centrioles

26 / 40

26.

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

27 / 40

27.

Plasma membrane is composed of

A. Protein

B. Cellulose

C. Protein and Lipids

D. Lipids

28 / 40

28.

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

A. Enzyme

B. pigment

C. vitamin

D. protein

29 / 40

29.

Digested food materials are carried to all parts of plant especially

A. root apices

B. stem

C. all of the options

D. leaves

30 / 40

30.

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

31 / 40

31.

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

A. Toluidine blue

B. Hematoxylin and eosin

C. Blue trichrome

D. Sudan III

32 / 40

32.

Cellular organelles containing hydrolytic enzymes are called

A. Mesosomes

B. Ribosomes

C. Lysosomes

D. Peroxisomes

33 / 40

33.

Sucrose developed from excess sugars is transported for storage to

A. All the options

B. Stem Tubers

C. Root tubers

D. Seeds

34 / 40

34.

Directly linked pigments to photosynthetic electron transport are

A. Phycobilins

B. Carotenoids

C. Chlorophylls

D. Xanthophylls

35 / 40

35.

The raw material for photosynthesis are

A. Light energy, CO2 and H2O

B. Light energy and CO2

C. Light energy, CO2, H2O and photosynthesis pigments

D. Light energy

36 / 40

36.

Prokaryotic cell does not possess

A. Cell wall

B. Cytoplasm

C. Nuclear membrane

D. Plasma membrane

37 / 40

37.

What staining is best for lipid detection ?

A. Colloid gold

B. Sudan III IV

C. Berlin blue

D. Feulgens nuclear reaction

38 / 40

38.

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

A. 0.2 uM

B. 0.1 nM

C. 0.4 mm

D. 3.0 uM

39 / 40

39.

Leaves are not essential for

A. photosynthesis

B. starch formation

C. Intake of carbon dioxide

D. Receive sunlight

40 / 40

40.

The pigments which are highly efficient in absorbing solar energy are

A. Chlorophylls

B. Phycobilins

C. Xanthophylls

D. Carotenoids

Your score is

The average score is 41%