General Biology I — 2020 Past Questions

University of Ilorin BIO101: 34 questions.

Topics: Cell structure and organisation, Chromosomes, genes their relationships and importance, Heredity and evolution, Interrelationships of organisms, Characteristics and classification of living things

1. Which of the following has the longest period in the cell cycle?
   1. G1
   2. G2
   3. M
   4. S
2. Which of the following is an obligate anaerobe?
   1. Clostridium botulinum
   2. E. Coli
   3. Staphylococcus aureus
   4. All of the above
3. What part of light is used by higher plants for photosynthesis?
   1. Red
   2. Blue
   3. Green
   4. None of the above
4. Which of the following is not an example of a chromosome type?
   1. Hollowcentric
   2. Acrocentric
   3. Telocentric
   4. Metacentric
5. The deeply colored part of the chromosome is called?
   1. Centromere
   2. Kinetochore
   3. Euchromatin
   4. Heterochromatin
6. Lactic acid formation in plants takes place in the absence of?
   1. O2
   2. ATP
   3. None of the above
   4. H2O
7. In which stage of cell division does chromosomal aberration occur?
   1. Prophase
   2. Anaphase
   3. Metaphase
   4. Telophase
8. Who described protoplasm as a jelly-like substance?
   1. Robert Hooke
   2. Rudolf von Virchow
   3. Purkinje
   4. Schwann
9. At what phase of meiosis does chromosomal aberration/non-disjunction occur?
   1. Prophase
   2. Metaphase
   3. Anaphase
   4. Telophase
10. The following materials can be transported in plants and animals except?
    1. Hormones
    2. Urea
    3. CO2
    4. Oxygen
11. Alcohol is a product of?
    1. Aerobic respiration
    2. Anaerobic respiration
    3. Krebs cycle
    4. Electron transport chain
12. Histones are found in?
    1. Bacterial cells
    2. Viral cells
    3. Eukaryotic cells
    4. Archaea
13. Phloem loading in sugar sources is by?
    1. Osmosis
    2. Active transport
    3. Diffusion
    4. Translocation
14. Which of the following is a waste product of respiration?
    1. ATP
    2. CO2
    3. H2O
    4. All of the above
15. Which of the following is a significance of meiosis?
    1. Basis of vegetative propagation
    2. Repair of damaged body parts
    3. Initiates variation and evolution of species
    4. Growth and development
16. Which of the following will have a higher number of mitochondria?
    1. Bacteria
    2. Mammals
    3. Fungi
    4. Protists
17. At what percentage of oxygen does anaerobic respiration occur?
    1. 10%
    2. 0.9%
    3. 5%
    4. 2%
18. Lack of green pigmentation in seedlings when raised in the dark is an example of?
    1. Inheritable
    2. Heritable
    3. Environmental variation
    4. Genetic mutation
19. An abnormal replication of genes is called?
    1. Slicing
    2. Mutation
    3. Breakage
    4. Splicing
20. The stage where chromosomes are located at the center is?
    1. Interphase
    2. Metaphase
    3. Anaphase
    4. Prophase
21. Which of the following did not take part in cell theory?
    1. Virchow
    2. Schwann
    3. Schleiden
    4. Weissman
22. Solid wastes are removed from?
    1. Barks
    2. Leaves
    3. Leaves and stems
    4. Roots
23. Glycolysis is also known as?
    1. Embden Meyerhoff pathway
    2. Emeden Meyerhoff Pathway
    3. Emden Neyerfof Pathway
    4. Embden Meyerhof Pathway
24. Which is not a type of RNA?
    1. mRNA
    2. nRNA
    3. tRNA
    4. rRNA
25. Translocation occurs in the?
    1. Phloem
    2. Xylem
    3. Vascular bundles
    4. Roots
26. The following are biological variations that can be passed from parent to offspring except?
    1. Leaf
    2. Germline
    3. Root
    4. Skin
27. Which of these is not part of a chromosome?
    1. Arm
    2. Constriction
    3. Metaphase
    4. Centromere
28. Golgi apparatus comprise ____ & ____?
    1. Golgi cisternae & vesicle
    2. Golgi body & vesicle
    3. Golgi body & cisternae
    4. Cristae & vesicle
29. The term protoplasm was first used by?
    1. R. Hooke
    2. Purkinje
    3. Virchow
    4. Baere
30. Aerobic respiration occurs in the cytoplasm of?
    1. Animals
    2. Plants
    3. Prokaryotes
    4. None of the above
31. Carboxylation does not occur in?
    1. ETC
    2. Krebs cycle
    3. EMP
    4. None of the above
32. All the following have a double membrane except?
    1. Mitochondria
    2. Cytoplasm
    3. Nucleus
    4. Endoplasmic reticulum
33. A chromosome attached to another chromosome is called?
    1. Satellite chromosome
    2. Metacentric
    3. Acrocentric
    4. Sub-metacentric
34. A spherical organelle bounded by a single membrane, filamentous and colloidal is?
    1. Endoplasmic reticulum
    2. Nucleus
    3. Chloroplast
    4. Microbodies

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