BIO 101 CBT PRACTICE TEST

Ace/Undergragra March 23, 2023

0 4,503 1 minute read

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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 101 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

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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Undergragra

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Created on March 19, 2023 By

Ace/Undergragra

BIO 101

1 / 40

1. The features of discrete variations are clearly

A. Phenotypic

B. Genetical

C. Peripheral

D. Physical

2 / 40

2. Which of the following statements is true about the cell membrane.

A. The continuous spherical lipid layer of the cell membrane is about 7mm thick

B. The arrangement of the lipid bilayer prevents hydrophobic solutes from passively diffusing across the cell membrane

C. Markers on a cell membrane serve to transmit signals into the cell membrane

D. The cell membrane consists of a layer of amphiphatic lipids which arrange so that their hydrophilic tail regions are shielded from the extracellular faces of the membrane

3 / 40

3. Series of membrane bound channels involved in the synthesis and transport of materials, mainly lipids are?

A. Rough endoplasmic reticulum

B. Golgi apparatus

C. Mitochondria

D. Smooth endoplasmic reticulum

4 / 40

4. When a plant with white seed coats was crossed with gray seed coats; the resulting f1 plants yielded grey seed coats. This is an example of

A. Monohybrid inheritance

B. Dihybrid inheritance

C. Polyhybrid inheritance

D. I don't know

5 / 40

5. The following are functions of leucoplasts except

A. Assists in energy production

B. Synthesis of tetrapyrolle compounds such as haem

C. Bulk storage of starch, lipid or proteins

D. Synthesis of fatty acids and amino acids

6 / 40

6. The following are characteristics of eukaryotic cells except

A. Ribosomes are large (80S)

B. Cell division is by mitosis or meiosis

C. Motility is by flexible waving undulipodium made of tubulin

D. Reproduction is only asexual

7 / 40

7. The following are characteristics of prokaryotic cells except

A. They are small cells (<5mm)

B. ) Cells divide by binary fission

C. DNA is linear and associated with proteins to form chromatin

D. No nucleus or any membrane bound organelle

8 / 40

8. The vascular tissue which function for the conduction of water and mineral salt upward from root to leaves of plant is?

A. Xylem

B. Sclereids

C. Companion Cells

D. Phloem

9 / 40

9. The difference between diffusion and osmosis is?

A. Movement of water from region of higher concentration to region of lower concentration in osmosis

B. The permeability of the cell membrane is reduced in osmosis

C. The size of the molecule is reduced in osmosis

D. The movement of the molecule from region of higher concentration to region of lower concentration in osmosis

10 / 40

10. The type of cell division that enhances growth and development is

A. Nuclear division

B. Meiosis

C. Mitosis

D. Cytoplasmic cell division

11 / 40

11. The term cell was coined by

A. Robert hooke

B. Nagelli

C. Schwann

D. Purkinje

12 / 40

12. One of the following is true about DNA

A. Eukaryotic organisms store their DNA inside the ribosomes

B. Eukaryotic organisms store their DNA inside the cell cytoplasm

C. Prokaryotic organisms store their DNA inside the cell nucleus

D. Prokaryotic organisms store their DNA in the cell’s cytoplasm

13 / 40

13. Which of the following statements is true about the vacuole

A. It aids the digestion of invading bacteria

B. All of the above

C. It plays a major role in autophagy

D. It can digest food

14 / 40

14. _______ is the physical differences observed between individuals

A. Dissociation

B. Variation

C. Venation

D. Continuous

15 / 40

15. White blood cells is mainly responsible for?

A. All of the above

B. Combating infection and diseases

C. Production of hormones

D. Formation of clot

16 / 40

16. One of the following is not true about a chromosome

A. It contains DNA

B. It consists of two arms with a centrosome

C. Sister chromatids are joined together by the centromere

D. It is darkly colored when stained

17 / 40

17. At metaphase, chromosomes are individually arranged on the

A. Metaphase plane

B. All of the above

C. Middle of the cell

D. Metaphase plate

18 / 40

18. Hereditary material are carried on

A. Chromosome

B. Cytoplasm

C. Nucleus

D. Mitochondrion

19 / 40

19. The length of the mitochondrion is

A. 18nm

B. 8nm

C. 8µm

D. 18µm

20 / 40

20. The region where exchange of genetic material occur in the chromosome is

A. X region

B. Chromomere

C. Diakinesis

D. chiasmata

21 / 40

21. The principal means of passive transport in cell membrane is?

A. Reabsorption

B. Diffusion

C. Absorption

D. Retention

22 / 40

22. In the centromere, a distant point of attachment for fibers that make up the mitotic and meiotic spindle apparatus is called?

A. Kinetosome

B. Kinetochore

C. Kinetochrome

D. Kinetomere

23 / 40

23. Which of these is concerned with the clotting of blood?

A. Plasma

B. Platelets

C. Polymorph

D. Cytoplasm

24 / 40

24. The process by which nervous system converts stimuli into electrical impulses is

A. Transduction

B. Translocation

C. Transcription

D. Transportation

25 / 40

25. Endocytosis is an example of

A. Movement of toxic substances inside the cell

B. Movement if materials out of the cell

C. All of the above

D. Movement of materials inside the cell

26 / 40

26. One of the following is true about endocytosis

A. Phagocytosis refers to the process of engulfing large particles

B. Pinocytosis refers to the process of engulfing large particles

C. Cholesterol is carried by high density lipids

D. Vacuoles are formed from the inner mitochondrial membrane of the cell

27 / 40

27. The respiratory system in Amoeba, tapeworm and arthropods are _______

A. Moist skin, lung body, mouth

B. Lungs, lungs, gills

C. Body surface, cell membrane, tracheal system

D. Gills, lungs, body surface

28 / 40

28. Phosphorylation is the _______

A. Addition of ADP to an inorganic phosphate group

B. None of the above

C. Removal of ADP from an inorganic hydrogen bond

D. Beginning of ATP

29 / 40

29. Blood is a

A. Tissue

B. Cell

C. Organ

D. System

30 / 40

30. Osmosis occurs through a semi-____________ membrane

A. permeble

B. permeable

C. pemeable

D. parmeable

31 / 40

31. Photosynthesis requires two stages namely

A. Light and dark

B. Dark and glucose

C. Light and photosystem

D. Phosphorylation and ligh

32 / 40

32. Carotenoids are divided into

A. Diatoms and carotenes

B. Chlorophyll and chromophyll

C. Xanthophyll and carotenes

D. Xanthophyll and fucoxanthin

33 / 40

33. The lysosome is formed from the

A. Smooth endoplasmic reticulum

B. Rough endoplasmic reticulum

C. Nucleus

D. Mitochondrion

34 / 40

34. A pair of short microtubules involved in cell division is called

A. Cytoskeleton

B. Undulipodium

C. Centriole

D. Microvillus

35 / 40

35. Which of this is an organ

A. Xylem bundle

B. Guard cells

C. Liver

D. Blood

36 / 40

36. The following will affect the rate of diffusion of a molecule except

A. The kinetic energy of the molecule

B. The charges on the molecule

C. The size of the molecule

D. The solubility of the molecule

37 / 40

37. Ribosomes are found in groups called

A. Polysomes

B. Lysosomes

C. Monosomes

D. Perioxosomes

38 / 40

38. The process whereby stretches of Dna are copied into the related nucleic acid RNA is called

A. Mutation

B. Translocation

C. Mutarotation

D. Transcription

39 / 40

39. Enzymes of the lysosome work optimally at a ph of?

A. 5

B. 7

C. 6

D. 4

40 / 40

40. Kreb’s cycle and glycolysis occur in the _______ and _______ respectively

A. Nucleus and Mitochondrion

B. cytoplasm and Mitochondrion

C. Mitochondrion and cell membrane

D. cell membrane and cytoplasm

Your score is

The average score is 46%

Please do well to drop a comment if this has really helped you. Thanks❤️

Ace/Undergragra March 23, 2023

0 4,503 1 minute read

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