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Punjab (PTB) · Quarter book test · Free

1st Year Biology 1st Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: CHAP 1: Biodiversity and Classification, CHAP 2: Bacteria and Viruses, CHAP 3: Cells and Subcellular Organelles.

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1st Year Biology 1st Quarter Book Paper

1st Year · Biology · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 40Time: 1 hour

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. What type of body symmetry do chordates exhibit?

    1. Radial

    2. Bilateral

    3. Asymmetrical

    4. None of the above

  2. What surrounds the new DNA during endospore formation?

    1. A single cell wall

    2. A protein layer

    3. Two membrane

    4. One lipid membrane

  3. 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

  4. Mutualism is a symbiotic relationship in which:

    1. Both organisms are harmed

    2. One benefits, one is harmed

    3. Both benefit

    4. Neither benefits

  5. How does HIV replicate inside host cells?

    1. By transcription of its RNA

    2. By reverse transcription of RNA into DNA

    3. By splitting the host cell into two

    4. By using host DNA directly

  6. 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

  7. What supports conservation through biodiversity assessment?

    1. Urban planning

    2. Random sampling

    3. Pollination

    4. Erosion control

  8. The HIV capsid contains:

    1. Single-stranded DNA and reverse transcriptase

    2. Single-stranded RNA and reverse transcriptase

    3. Double-stranded DNA and integrase

    4. Double-stranded RNA and RNA polymerase

  9. 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

  10. Which body is covering is secreted by annelid epidermis?

    1. Hair

    2. Shell

    3. Moist acellular cuticle

    4. Mantle

  11. In bacterial cells, respiration occurs at:

    1. Mitochondria

    2. Cell membrane

    3. Ribosomes

    4. Endoplasmic reticulum

  12. 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

Q2. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

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

  2. What type of bacteria is used for cleaning up oil spills and how?

  3. What does random sampling enhance in blodiversity studies?

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

  5. How do bacteria without flagella achieve motility?

  6. Give an example of an aerial survey.

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

  8. How is the bacteria flagellum anchored in the cell?

  9. What are point counts?

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

  11. What is the role of normal flora in human system stimulation?

  12. Why is it important to understand how ecosystems function?

Q3. Long questions (Attempt any 3 of 4 · 3 × 4 = 12)

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

  2. Describe the different types of motility patterns observed in bacteria. or explain different methods of movement in bateria. 

  3. Describe the body structure and systems of organisms in Phylum Mollusca. 

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