Class 10 Quiz Level 3 (Difficult) – Life Processes

Total questions: 10

What is the role of bile salts in the digestion of fats?

Topic: Nutrition

Deselect Answer

Break down proteins

Emulsify fats

Absorb carbohydrates

Neutralize stomach acid

None

What is the effect of the Frank-Starling law on the heart's function?

Topic: Transportation

Deselect Answer

Increased heart rate with increased blood volume

Decreased cardiac output with decreased venous return

Increased stroke volume with increased venous return

Decreased heart rate with increased stroke volume

None

Which coenzyme is derived from vitamin B3 (niacin) and plays a crucial role in cellular respiration?

Topic: Nutrition

Deselect Answer

Coenzyme A

NAD⁺ (Nicotinamide adenine dinucleotide)

FAD (Flavin adenine dinucleotide)

CoQ10 (Coenzyme Q10)

None

In the electron transport chain, which complex is responsible for pumping protons into the intermembrane space, creating a proton gradient?

Topic: Respiration

Deselect Answer

Complex I

Complex II

Complex III

Complex IV

None

How does antidiuretic hormone (ADH) affect the kidneys?

Topic: Excretion

Deselect Answer

It increases urine production

It decreases water reabsorption

It increases water reabsorption

It decreases sodium reabsorption

None

Which molecule acts as the primary energy currency in cells?

Topic: Nutrition

Deselect Answer

Glucose

ATP (Adenosine triphosphate)

NADH

FADH₂

None

Which hormone is released in response to low blood pressure and stimulates the reabsorption of sodium in the kidneys?

Topic: Excretion

Deselect Answer

Insulin

Aldosterone

Adrenaline

Glucagon

None

Which mineral acts as a cofactor for over 300 enzymes, including those involved in DNA synthesis and repair ?

Topic: Nutrition

Deselect Answer

Calcium

Magnesium

Iron

Zinc

None

Which mechanism explains the movement of water in and out of cells based on solute concentration?

Topic: Transportation

Deselect Answer

Active transport

Osmosis

Diffusion

Facilitated diffusion

None

10.

Which component of the blood is essential for forming clots to prevent bleeding?

Topic: Transportation

Deselect Answer

Red blood cells

White blood cells

Platelets

Plasma

None

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Class 10 Quiz Level 3 (Difficult) – Life Processes

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