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Punjab (PTB) · Quarter book test · Free

1st Year Biology 4th Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: CHAP 10: Human Respiratory System, CHAP 11: Human Circulatory System, CHAP 12: Human Skeletal and Muscular System.

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1st Year Biology 4th 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 prevents backflow of blood in veins?

    1. Arterial pressure

    2. Gravity

    3. Semilunar valves

    4. Pulmonary action

  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 is a serious complication of advanced pulmonary tuberculosis?

    1. Respiratory failure

    2. Diabetes

    3. Liver failure

    4. Kidney failure

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

    1. ST segment

    2. QT interval

    3. PR segment

    4. QRS complex

  5. What separates the lamellae in compact bone?

    1. Lacunae

    2. Trabeculae

    3. Blood vessels

    4. Fat cells

  6. Which bacteria causes tuberculosis?

    1. Streptococcus pneumoniae

    2. Mycobacterium tuberculosis

    3. Haemophilus influenzae

    4. Staphylococcus aureus

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

    1. Blood vessels

    2. Pericardial sac

    3. Lung tissue

    4. Diaphragm

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

    1. Frontal bone

    2. Temporal bone

    3. Occipital bone

    4. Sphenoid bone

  9. 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

  10. Atrial natriuretic hormone (ANH) is released in response to:

    1. Low blood pressure

    2. Dehydration

    3. Stretching of right atrium due to increased blood volume

    4. Low salt levels in blood

  11. Bones connected by hyaline cartilage in cartilaginous joints can be found in?

    1. Knee joint

    2. Joint between the first rib and sternum

    3. Joints between vertebrae

    4. Teeth sockets

  12. What prevents food from entering the larynx during swallowing?

    1. Vocal cords

    2. Nasal septum

    3. Glottis

    4. Epigiottis

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

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

  2. What is expiration or exhalation?

  3. State the phases of heartbeat.

  4. Describe the bones of the pelvic girdle?

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

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

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

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

  9. How does hypertension affect the kidneys?

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

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

  12. What are the possible effects of thrombosis?

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

  1. Describe the structure and function of haemoglobin.

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

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

  4. How do diseases like chronic obstructive pulmonary disease (COPD) affect gaseous exchange efficiency?