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Punjab (PTB) · Full book test (board pattern) · Free

1st Year Biology Full Book Paper

85 marks · 3 hours · 55 questions. Covers: 12 chapters (CHAP 1: Biodiversity and Classification to CHAP 12: Human Skeletal and Muscular System).

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1st Year Biology Full Book Paper

1st Year · Biology · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 85Time: 3 hours

Q1. Multiple choice questions (Attempt all · 17 × 1 = 17)

  1. What type of body symmetry do chordates exhibit?

    1. Radial

    2. Bilateral

    3. Asymmetrical

    4. None of the above

  2. What causes spring wood to appear lighter?

    1. Absence of xylem

    2. Thicker cell walls

    3. Wider vessels and high cambial activity

    4. Less water absorption

  3. How much energy is released by breaking one phosphate bond in ATP?

    1. 2 kcal/mole

    2. 4.6 kcal/mole

    3. 7.3 kcal/mole

    4. 10 kcal/mole

  4. What prevents backflow of blood in veins?

    1. Arterial pressure

    2. Gravity

    3. Semilunar valves

    4. Pulmonary action

  5. What surrounds the new DNA during endospore formation?

    1. A single cell wall

    2. A protein layer

    3. Two membrane

    4. One lipid membrane

  6. What is a serious complication of advanced pulmonary tuberculosis?

    1. Respiratory failure

    2. Diabetes

    3. Liver failure

    4. Kidney failure

  7. What happens if unpleasant taste or smell is detected in food?

    1. Food is swallowed

    2. Food is accepted

    3. Food is rejected

    4. Saliva increases

  8. Enzymes are also known as:

    1. Coenzymes

    2. Substrates

    3. Biocatalysts

    4. Metabolites

  9. What is done after generating the density map?

    1. The crystal is melted

    2. Data is analyzed with computational tools

    3. The protein is frozen

    4. The protein is dyed

  10. 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

  11. In a muscle, the Z-line are the proteins for the attachment of the ends of;

    1. Actin filaments

    2. Myosin filaments

    3. Both actin and myosin filaments

    4. Sarcomeres

  12. What enzyme is involved in the synthesis of RNA from DNA?

    1. DNA polymerase

    2. RNA polymerase

    3. Ligase

    4. Helicase

  13. Mutualism is a symbiotic relationship in which:

    1. Both organisms are harmed

    2. One benefits, one is harmed

    3. Both benefit

    4. Neither benefits

  14. What happens to Ψs when more solute is added?

    1. It increases

    2. It becomes more negative

    3. It becomes zero

    4. It becomes positive

  15. What is the function of the antenna complex in a photosystem?

    1. Produces glucose

    2. Absorbs CO2

    3. Captures light and passes energy to the reaction centre

    4. Breaks water molecules

  16. Which ECG segment is prolonged in a first-degree heart block?

    1. ST segment

    2. QT interval

    3. PR segment

    4. QRS complex

  17. 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

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 is the specific heat capacity of water and why is it significant?

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

  6. How do bacteria without flagella achieve motility?

  7. Give an example of an aerial survey.

  8. What are acylglycerols and how are they classified?

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

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

  11. What are point counts?

  12. What is the role of hydrogen bonds in water's surface tension?

Q3. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. What is proteomics?

  2. How many ATP molecules are produced in anaerobic respiration?

  3. What is the function of companion cells in phloem?

  4. What do you mean by hydrolases? Give two examples.

  5. How did structural biology help in studying HIV-1 reverse transcriptase?

  6. What are the reactants and products of photosynthesis?

  7. How do plants cope with high temperatures?

  8. What are irreversible inhibitors and how do they act?

  9. How does computational biology contribute to personalized medicine?

  10. What happens when RuBisCO binds oxygen instead of carbon dioxide?

  11. What is a nutrient?

  12. How is the first enzyme regulated in a metabolic pathway?

Q4. Short questions (Attempt any 6 of 9 · 6 × 2 = 12)

  1. What is expiration or exhalation?

  2. What happens to the opposing muscle during an antagonistic muscle action?

  3. What causes jaundice in the digestive system?

  4. State the phases of heartbeat.

  5. How are the lungs divided and what is the difference between the right and left lungs?

  6. Describe the bones of the pelvic girdle?

  7. What are the main functions of the large intestine?

  8. What type of blood does the pulmonary circulation carry to the lungs?

  9. What is the function of the epiglottis and how does it work?

Q5. Long questions (Attempt any 3 of 5 · 3 × 8 = 24)

  1. Draw a flow chart to describe the steps involved in drug development till its prescription.

  2. Describe the effect of temperature on the rate of enzyme action.

  3. Describe the structure and function of haemoglobin.

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

  5. Write a detailed note on the disorders of skeleton.