General Biology I — practice1 Past Questions

University of Ilorin BIO101: 53 questions.

Topics: Cell structure and organisation, Characteristics and classification of living things, Functions of cellular organelles, Chromosomes, genes their relationships and importance

  1. Which of the following organisms are not composed of cells?
    1. Amoeba
    2. Paramecium
    3. Euglena
    4. None of these
  2. Unicellular organisms are not capable of?
    1. Independent existence
    2. Performing essential functions of life
    3. Both (a) and (b)
    4. None of these
  3. Who was the first one to see a live cell?
    1. Robert Hooke
    2. Leeuwenhoek
    3. Robert Brown
    4. None of these
  4. Who was the German botanist to study the different cells forming plant tissues?
    1. Schleiden
    2. Schwann
    3. Rudolf Virchow
    4. None of these
  5. In which year did Matthias Schleiden examine a large number of plants and observe that all plants are composed of different kinds of cells forming plant tissues?
    1. 1638
    2. 1738
    3. 1838
    4. 1938
  6. In which year did Schwann study different types of animal cells?
    1. 1839
    2. 1739
    3. 1639
    4. 1938
  7. Who reported that the cell has a thin outer layer known as the 'Plasma membrane'?
    1. Schleiden
    2. Schwann
    3. Virchow
    4. Robert Hooke
  8. Who concluded that the cell wall is a unique structure of plant cells?
    1. Schleiden
    2. Schwann
    3. Both (a) and (b)
    4. None of these
  9. Who proposed the hypothesis that the bodies of animals and plants are composed of cells and products of cells?
    1. Schleiden
    2. Schwann
    3. Both (a) and (b)
    4. None of these
  10. Who formulated the cell theory?
    1. Schleiden
    2. Schwann
    3. Both (a) and (b)
    4. None of these
  11. ‘Omnis cellula e cellula’ was given in which year?
    1. 1756
    2. 1855
    3. 1945
    4. 1839
  12. Who described that cells divide and new cells are formed from pre-existing cells?
    1. Schleiden
    2. Schwann
    3. Virchow
    4. All of these
  13. Which of the following statements is not a part of the final cell theory?
    1. Cell has a thin outer layer called plasma membrane.
    2. All living organisms are made up of cells and products of cells.
    3. All cells arise from pre-existing cells.
    4. All of these
  14. What is the outer covering of a typical plant cell?
    1. Cell wall externally
    2. Plasma membrane externally
    3. Cell wall internally
    4. Cell wall externally, plasma membrane internally
  15. What does the nucleus of a typical animal cell contain?
    1. Chromosomes
    2. Genes
    3. DNA
    4. All of these
  16. The cell containing a membrane-bound nucleus can be called:
    1. Eukaryotic
    2. Prokaryotic
    3. Both (a) and (b)
    4. None of these
  17. If the volume of a cell is filled with a semi-fluid matrix called cytoplasm, what kind of cell is it?
    1. Eukaryotic
    2. Prokaryotic
    3. Both (a) and (b)
    4. None of these
  18. What is the main arena of cellular activities in eukaryotic cells?
    1. Nucleus
    2. Cytoplasm
    3. Plasma membrane
    4. All of these
  19. In a eukaryotic cell, where do various chemical reactions occur to keep the cell in a living state?
    1. Nucleus
    2. Cytoplasm
    3. Mitochondria
    4. All of these
  20. How many of the following organelles are found in prokaryotic cells? ER, Golgi complex, Lysosome, Mitochondria, Microbodies, Vacuoles.
    1. 1
    2. 3
    3. 4
    4. 0
  21. Where are ribosomes found in prokaryotic cells?
    1. Cytoplasm
    2. Mitochondria
    3. Chloroplast
    4. All of these
  22. What is external to the cell wall in a prokaryotic cell?
    1. Glycocalyx layer
    2. Plasma membrane
    3. Both (a) and (b)
    4. None of these
  23. A bacterial cell was taken and gram staining was done. It did not take up the gram stain. What type of bacteria is it?
    1. Gram-positive
    2. Gram-negative
    3. Non-effective to gram stain
    4. None of these
  24. Which of the following is the basis for classifying bacteria as Gram-positive or Gram-negative?
    1. Cell wall
    2. Glycocalyx layer
    3. Plasma membrane
    4. All of these
  25. Which is a common organelle found in both eukaryotes and prokaryotes?
    1. Lysosome
    2. Ribosome
    3. Vacuole
    4. Mitochondria
  26. What is a specialized differentiated form of the cell membrane?
    1. Plasmid
    2. Nucleosome
    3. Mesosome
    4. All of these
  27. Infoldings of the cell membrane in prokaryotes are called?
    1. Mesosomes
    2. Lysosomes
    3. Both (a) and (b)
    4. None of these
  28. What is external to the cell wall in a prokaryotic cell?
    1. Glycocalyx layer
    2. Plasma membrane
    3. Both (a) and (b)
    4. None of these
  29. Which of the following statements is incorrect?
    1. Glycocalyx differs in composition and thickness among different bacteria.
    2. All organisms are made of cells or aggregates of cells.
    3. ER helps in the synthesis of proteins, lipoproteins, and glycogen.
    4. Cells of all living organisms have a nucleus.
  30. What is the basis of classification of bacteria into Gram-positive or Gram-negative?
    1. Cell wall
    2. Glycocalyx layer
    3. Plasma membrane
    4. All of these
  31. Which of the following structures does not take part in bacterial motility?
    1. Flagella
    2. Pilli
    3. Fimbriae
    4. Both (b) and (c)
  32. What is the size of prokaryotic ribosomes?
    1. 10-20 μm
    2. 15-20 nm
    3. 10-20 nm
    4. 15-20 cm
  33. In 70S prokaryotic ribosomes, what are the subunits present?
    1. 50S and 20S
    2. 50S and 30S
    3. 40S and 30S
    4. 60S and 30S
  34. What is a specialized differentiated form of cell membrane?
    1. Plasmid
    2. Nucleosome
    3. Mesosome
    4. All of these
  35. Infoldings of the cell membrane in prokaryotes are called?
    1. Mesosomes
    2. Lysosomes
    3. Both (a) and (b)
    4. None of these
  36. What is external to the cell wall in a prokaryotic cell?
    1. Glycocalyx layer
    2. Plasma membrane
    3. Both (a) and (b)
    4. None of these
  37. Select the incorrect statement:
    1. Glycocalyx differs in composition and thickness among different bacteria.
    2. All organisms are made of cells or aggregates of cells.
    3. ER helps in synthesis of proteins, lipoproteins, and glycogen.
    4. Cells of all living organisms have a nucleus.
  38. What is the basis of classification of bacteria into Gram-positive or Gram-negative?
    1. Cell wall
    2. Glycocalyx layer
    3. Plasma membrane
    4. All of these
  39. Which of the following is NOT a function of the cell wall?
    1. Interaction with the outside world
    2. Provide structural support and shape
    3. Prevent bursting and collapsing
    4. Exchange of nutrition takes place through it
  40. Which of the following helps in respiration, secretion processes, and increases the surface area for enzymatic content?
    1. Plasma membrane
    2. Cell wall
    3. Mesosomes
    4. Glycocalyx layer
  41. In polyribosomes, the ribosomes attach to which RNA?
    1. m-RNA
    2. t-RNA
    3. r-RNA
    4. All of these
  42. Gas vacuoles are found in which of the following organisms?
    1. Blue-green bacteria
    2. Purple bacteria
    3. Green photosynthetic bacteria
    4. All of these
  43. The fluid mosaic model was given by Singer and Nicolson in which year?
    1. 1972
    2. 1976
    3. 1982
    4. 1986
  44. Which of the following is a function of active transport?
    1. Pumps
    2. Carrier protein transport
    3. Ion channels
    4. Diffusion
  45. Which of the following organisms have cell walls made up of cellulose, hemicelluloses, pectins, and proteins?
    1. Fungi
    2. Plants
    3. Algae
    4. All of these
  46. Which of the following walls is capable of growth in a plant cell?
    1. Primary wall
    2. Secondary wall
    3. Both (a) and (b)
    4. Middle lamella
  47. What is the component of the middle lamella that binds neighboring cells together?
    1. Calcium phosphate
    2. Sodium pectate
    3. Calcium pectate
    4. Sodium phosphate
  48. A structure that traverses the middle lamella and connects the cytoplasm of neighboring cells is called?
    1. Primary wall junction
    2. Plasmodesmata
    3. Desmosomes
    4. Secondary wall
  49. How many of the following are not included in the endomembrane system: Endoplasmic Reticulum, Golgi complex, Lysosome, Mitochondria, Chloroplast, Vacuoles, Peroxisomes?
    1. 2
    2. 3
    3. 4
    4. 5
  50. What is the network of tiny tubular structures scattered in the cytoplasm as seen from an electron microscope?
    1. Golgi complex
    2. Microtubules
    3. Endoplasmic reticulum
    4. Mitochondria
  51. Which side in a cell does the luminal and extra-luminal compartments are situated respectively?
    1. Cytoplasm, inside ER
    2. Inside ER, cytoplasm
    3. Cytoplasm, plasma membrane
    4. Nucleus, cytoplasm
  52. Rough endoplasmic reticulum is called so due to the presence of?
    1. Lysosome
    2. Golgi granules
    3. Ribosomes
    4. Protein granules
  53. RER is frequently seen in cells associated with frequent synthesis and secretion of?
    1. Lipid
    2. Glucose
    3. Protein
    4. All of these

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