Life Processes MCQ Set 4

Explore this diverse selection of multiple-choice questions (MCQs) designed for various examinations. Life Processes MCQ Set 4 focuses on essential aspects of the subject, ensuring comprehensive preparation across different categories and fields of study to enhance your knowledge and readiness. The right answers for each question is provided next to respective questions for your convenience, you can either attend the test or dirtectly access the right answers by clicking the show correct answer button.

Each correct answer earns 1 mark, while each incorrect answer deducts 0.3 marks.

1. Which hormone controls the basal metabolic rate?

A. Insulin

B. Thyroxine

C. Adrenaline

D. Estrogen

2. Which component of blood is responsible for clotting?

A. Red blood cells

B. White blood cells

C. Plasma

D. Platelets

3. What is the main function of the mitochondria?

A. Protein synthesis

B. Energy production

C. Waste removal

D. Photosynthesis

4. Which structure in plants is responsible for gas exchange?

A. Xylem

B. Phloem

C. Stomata

D. Roots

5. Which part of the digestive system is primarily responsible for water absorption?

A. Mouth

B. Stomach

C. Small intestine

D. Large intestine

6. Which component of the circulatory system carries oxygenated blood away from the heart?

A. Veins

B. Arteries

C. Capillaries

D. Lymph

7. What is the function of the alveoli in the lungs?

A. Transport oxygen

B. Produce mucus

C. Exchange gases

D. Protect the lungs

8. Which enzyme breaks down starch into sugar?

A. Amylase

B. Pepsin

C. Lipase

D. Trypsin

9. What is the main function of the excretory system?

A. Transport nutrients

B. Produce energy

C. Remove waste products

D. Fight infections

10. Which part of the brain is responsible for regulating body temperature?

A. Cerebrum

B. Cerebellum

C. Medulla

D. Hypothalamus

11. What is the main function of the pancreas in digestion?

A. Produce bile

B. Produce digestive enzymes

C. Absorb nutrients

D. Store food

12. Which structure in the kidney filters blood to form urine?

A. Neuron

B. Nephron

C. Alveolus

D. Hepatocyte

13. Which process is involved in the breakdown of glucose to release energy?

A. Photosynthesis

B. Digestion

C. Respiration

D. Excretion

14. What is the role of the epiglottis in the respiratory system?

A. Filter air

B. Produce mucus

C. Cover the trachea during swallowing

D. Protect the lungs

15. Which part of the digestive system is primarily responsible for the absorption of digested food?

A. Stomach

B. Small intestine

C. Large intestine

D. Mouth

16. What is the primary function of the large intestine?

A. Digestion of food

B. Absorption of water

C. Production of bile

D. Transport of nutrients

17. Which enzyme is responsible for the digestion of fats?

A. Amylase

B. Pepsin

C. Lipase

D. Trypsin

18. What is the primary function of red blood cells?

A. Fight infections

B. Clot blood

C. Transport oxygen

D. Produce hormones

19. Which component of the blood carries nutrients, hormones, and waste products?

A. Red blood cells

B. White blood cells

C. Platelets

D. Plasma

20. What is the main function of the ribosome?

A. Energy production

B. Protein synthesis

C. Waste removal

D. Photosynthesis

21. Which organ is primarily responsible for detoxification in the body?

A. Kidney

B. Liver

C. Lung

D. Heart

22. Which type of cell is involved in the immune response?

A. Red blood cells

B. White blood cells

C. Platelets

D. Neurons

23. What is the primary role of the capillaries?

A. Transport oxygen

B. Produce hormones

C. Facilitate gas exchange

D. Store nutrients

24. Which process involves the release of energy from food molecules?

A. Digestion

B. Respiration

C. Excretion

D. Photosynthesis

25. Which part of the plant is primarily involved in the absorption of sunlight?

A. Roots

B. Stem

C. Leaves

D. Flowers

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