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Punjab (PTB) · Chapter test · Free

1st Year Biology Chapter 3 TestCells and Subcellular Organelles

30 marks · 40 minutes · 21 questions. Covers: CHAP 3: Cells and Subcellular Organelles.

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1st Year Biology Chapter 3 Test

1st Year · Biology · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Which stem cells are derived from early embryos?

    1. Adult stem cells

    2. Pluripotent stem cells

    3. Embryonic stem cells

    4. Induced pluripotent stem cells

  2. What may happen to products that are not secreted?

    1. Destroyed by ribosomes

    2. Sent to vacuoles

    3. Become or return to ER

    4. Become thylakoids

  3. Which cell type has 49% protein in its plasma membrane by weight?

    1. Bacteria

    2. Human red blood cells

    3. Mitochondrial inner membrane

    4. Plant cell

  4. What structure forms a basket-like structure on the nuclear side of the pore complex?

    1. Lipid vesicles

    2. DNA loops

    3. Tiny fibrils

    4. Histones

  5. What is the photographic magnification of an electron microscope?

    1. 1500x

    2. 16000x

    3. 250000x

    4. 1000000x

  6. Which of the following is NOT one of the seven basic properties of life?

    1. Division

    2. Movement

    3. Homeostasis

    4. Respiration

  7. Which factor can limit the rate of facilitated diffusion?

    1. Membrane cholesterol

    2. Number of available transport proteins

    3. ATP concentration

    4. pH value

  8. What do microscopes use to magnify specimens?

    1. Magnets and chemicals

    2. Lenses and sound waves

    3. Lenses and light or electron beams

    4. Radiation and mirrors

  9. Ribosomes are most abundant in cells that:

    1. Do photosynthesis

    2. Synthesize proteins

    3. Store fats

    4. Perform excretion

  10. What is the disadvantage of staining cells in light microscopy?

    1. It reduces resolution

    2. It increases size of image

    3. It kills the cells

    4. It lower magnification

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Describe the role of the Golgi body in forming lysosomes.

  2. What does the sodium-potassium pump do in nerve cells?

  3. How does the plasama membrane manage the transport of substance into and out of the cell?

  4. What are receptors in cell signaling, and where are they found?

  5. Where are cilia found in the human body, and what is their function?

  6. How do vacuoies help in plant protection

  7. In which types of cells is the Golgi apparatus found?

  8. What is the role of catalase enzymes in peroxisomes?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. What are lysosomes and what are their major functions in the cell?

  2. Describe the major techniques used to study the structure of the plasma membrane. 

  3. Write details of the structure and the chemical composition of cell walls of eukaryotes and prokaryotes.