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

1st Year Biology Second half Book Paper

85 marks · 3 hours · 55 questions. Covers: 6 chapters (CHAP 7: Structural and Computational Biology to CHAP 12: Human Skeletal and Muscular System).

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1st Year Biology Second half 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 is a serious complication of advanced pulmonary tuberculosis?

    1. Respiratory failure

    2. Diabetes

    3. Liver failure

    4. Kidney failure

  2. 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

  3. 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

  4. 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

  5. What prevents backflow of blood in veins?

    1. Arterial pressure

    2. Gravity

    3. Semilunar valves

    4. Pulmonary action

  6. 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

  7. Which bacteria causes tuberculosis?

    1. Streptococcus pneumoniae

    2. Mycobacterium tuberculosis

    3. Haemophilus influenzae

    4. Staphylococcus aureus

  8. What separates the lamellae in compact bone?

    1. Lacunae

    2. Trabeculae

    3. Blood vessels

    4. Fat cells

  9. 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

  10. Why is 3D structure important for understanding function?

    1. It shows chemical reactions

    2. It reveals movement

    3. Shape determines how a molecule works

    4. It gives color to molecules

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

    1. ST segment

    2. QT interval

    3. PR segment

    4. QRS complex

  12. What are the two portions of the pancreas?

    1. Cardiac and pyloric

    2. Exocrine and endocrine

    3. Cardiac and pyloric

    4. Superficial and deep

  13. What is otitis media?

    1. Infection of the throat

    2. Inflammation of the sinuses

    3. Inflammation of the middle ear

    4. Infection of the outer ear

  14. Which of the following is NOT an unpaired cranial bone?

    1. Frontal bone

    2. Temporal bone

    3. Occipital bone

    4. Sphenoid bone

  15. What is the symplast pathway?

    1. Movement through cell walls

    2. Movement through xylem only

    3. Movement through interconnected protoplasts via plasmodesmata

    4. Movement in the phloem

  16. How does structural homology help understand evolution?

    1. By studying protein shapes and their conservation

    2. By comparing organism size

    3. By analyzing metabolic rates

    4. By sequencing RNA only

  17. What protects the heart from mechanical shocks and friction?

    1. Blood vessels

    2. Pericardial sac

    3. Lung tissue

    4. Diaphragm

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

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

  2. What is proteomics?

  3. How do plants cope with high temperatures?

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

  5. What is a nutrient?

  6. How does computational biology contribute to personalized medicine?

  7. How does an isotonic solution affect plant cells?

  8. Why is the Protein Data Bank useful in drug design?

  9. How do cells elongate differently in plants?

  10. Why is protein folding important?

  11. What is the role of xylem parenchyma?

  12. Write a short note on protein data bank.

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

  1. What is expiration or exhalation?

  2. What causes jaundice in the digestive system?

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

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

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

  6. How is food mechanically digested in the oral cavity?

  7. What are the advantages of having millions of alveoli rather than a pair of simple balloon-like lungs?

  8. What is the main function of the colon?

  9. What type of disease is Chronic Obstructive Pulmonary Disease (COPD)?

  10. How is the release of secretions from the pancreas and liver controlled?

  11. What happens to the alveoli in emphysema?

  12. Where is the pancreas located in the body?

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

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

  2. State the phases of heartbeat.

  3. Describe the bones of the pelvic girdle?

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

  5. What are the underlying causes of tetany and tetanus?

  6. How does hypertension affect the kidneys?

  7. What is bone marrow, and what are the types and their functions?

  8. What are the possible effects of thrombosis?

  9. Where is spondylosis most commonly found?

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

  1. Describe the structure and function of haemoglobin.

  2. Define hypertension and describe the factors that regulate blood pressure and can lead to hypertension and hypotension

  3. What is meant by growth in plants and how does it occur in different plant types? 

  4. Why are pancreatic secretions alkaline, not acidic?

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