ACME ACADEMY

WEEKLY EVALUATION TEST

Subject: Science
Time Limit: 30 Mins
Max Marks: 20 Marks
Student Name:
Roll Number:
Class / Sec:
Date:

GENERAL INSTRUCTIONS:

  1. All questions are compulsory. Carefully read all instructions before starting.
  2. The question paper contains 20 questions.
  3. There is no negative marking for incorrect answers.
  4. Use of mobile phones, smartwatches, or calculators is strictly prohibited during the exam.
1. Context: A patient is diagnosed with a severe liver disorder that completely halts the production of bile juice. The patient consumes a meal rich in carbohydrates, proteins, and fats. Which macronutrient's digestion will be most directly and severely impaired?
[1 Mark]
(A) Carbohydrates
(B) Proteins
(C) Fats
(D) Vitamins
2. Context: During a 100-meter sprint, an athlete experiences intense muscle cramps in their legs and is forced to stop. What specific biochemical accumulates in the muscle cells to cause these cramps?
[1 Mark]
(A) Pyruvate
(B) Ethanol
(C) Lactic acid
(D) Carbon dioxide
3. Which green pigment is essential for absorbing light energy during photosynthesis?
[1 Mark]
(A) Haemoglobin
(B) Chlorophyll
(C) Melanin
(D) Carotene
4. What is the first 3-carbon product of glucose breakdown in all respiratory pathways?
[1 Mark]
(A) Pyruvate
(B) Ethanol
(C) Lactic acid
(D) ATP
5. In which part of the human digestive system is the digestion of food completely finished?
[1 Mark]
(A) Stomach
(B) Large intestine
(C) Small intestine
(D) Oesophagus
6. Why is the rate of breathing much faster in aquatic animals like fishes compared to terrestrial animals?
[1 Mark]
(A) Water is thicker than air.
(B) Fishes lack lungs.
(C) Dissolved oxygen in water is low.
(D) Fishes have smaller bodies.
7. How much energy is released when the terminal phosphate linkage in an ATP molecule is broken?
[1 Mark]
(A) 3.5 kJ/mol
(B) 30.5 kJ/mol
(C) 300.5 kJ/mol
(D) 35.0 kJ/mol
8. Which respiratory pigment in the human blood is responsible for carrying oxygen to tissues?
[1 Mark]
(A) Plasma
(B) Platelets
(C) Haemoglobin
(D) Melanin
9. Desert plants keep their stomata closed during the day to prevent water loss. How do they perform photosynthesis?
[1 Mark]
(A) They use oxygen instead.
(B) They photosynthesize entirely at night.
(C) They absorb carbon dioxide at night to form an intermediate.
(D) They only use water and sunlight.
10. What structure ensures that the air passage in the human throat does not collapse during breathing?
[1 Mark]
(A) Vocal cords
(B) Epiglottis
(C) Rings of cartilage
(D) Pharynx
11. Which enzyme is secreted by the gastric glands in the stomach to digest proteins?
[1 Mark]
(A) Pepsin
(B) Trypsin
(C) Lipase
(D) Amylase
12. Why do herbivores naturally possess a longer small intestine than carnivores?
[1 Mark]
(A) Meat is hard to digest.
(B) Grass contains cellulose.
(C) They eat larger quantities of food.
(D) They chew their food multiple times.
13. If potassium hydroxide (KOH) is placed inside an airtight glass jar alongside a plant, which biological process will halt?
[1 Mark]
(A) Transpiration
(B) Respiration
(C) Photosynthesis
(D) Germination
14. What anatomical feature does Amoeba use to engulf its food?
[1 Mark]
(A) Mouth pore
(B) Cilia
(C) Pseudopodia
(D) Flagella
15. What is the primary function of the mucus secreted in the human stomach?
[1 Mark]
(A) Digesting fats
(B) Protecting the inner lining from acid
(C) Breaking down starch
(D) Absorbing water
16. In human cells, where does the final breakdown of pyruvate using oxygen take place?
[1 Mark]
(A) Cytoplasm
(B) Nucleus
(C) Mitochondria
(D) Chloroplast
17. During the daytime, what is the major gaseous exchange event occurring in the leaves of green plants?
[1 Mark]
(A) Release of carbon dioxide
(B) Release of oxygen
(C) Release of nitrogen
(D) Intake of oxygen
18. How is the small intestine structurally adapted for the maximum absorption of digested food?
[1 Mark]
(A) It secretes strong acids.
(B) It has finger-like projections called villi.
(C) It has a thick muscular wall.
(D) It relies entirely on gravity.
19. In a highly complex multicellular organism like a human, why is simple diffusion insufficient for oxygen delivery?
[1 Mark]
(A) Humans have a low metabolic rate.
(B) Human skin is impermeable to gases.
(C) Not all cells are in direct contact with the environment.
(D) Diffusion only transports carbon dioxide.
20. What are the end products of anaerobic respiration (fermentation) in yeast?
[1 Mark]
(A) Lactic acid and energy
(B) Ethanol, carbon dioxide, and energy
(C) Carbon dioxide, water, and energy
(D) Glucose and oxygen
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