Class 10 Practice - Level 3 - Life Processes - Set 2

Total questions: 15

Which molecule acts as the primary energy currency in cells?

Topic: Nutrition

Glucose

ATP (Adenosine triphosphate)

NADH

FADH₂

None

In the Calvin cycle of photosynthesis, which molecule is the primary CO₂ acceptor?

Topic: Nutrition

Ribulose-1,5-bisphosphate (RuBP)

3-phosphoglycerate (3-PGA)

Glyceraldehyde-3-phosphate (G3P)

Glucose

None

What is the role of the pyruvate dehydrogenase complex in cellular respiration?

Topic: Respiration

To convert pyruvate to acetyl-CoA

To generate ATP directly

To transport electrons in the electron transport chain

To phosphorylate glucose

None

Which intermediate of the Krebs cycle is involved in both catabolic and anabolic pathways?

Topic: Respiration

Citrate

Isocitrate

α-Ketoglutarate

Succinyl-CoA

None

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

Topic: Transportation

Active transport

Osmosis

Diffusion

Facilitated diffusion

None

Which blood component is primarily responsible for maintaining osmotic pressure and pH balance?

Topic: Transportation

Red blood cells

White blood cells

Platelets

Plasma proteins

None

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

Topic: Excretion

Insulin

Aldosterone

Adrenaline

Glucagon

None

Which structure in the nephron is primarily involved in the concentration of urine?

Topic: Excretion

Glomerulus

Proximal convoluted tubule

Loop of Henle

Collecting duct

None

Which vitamin is a cofactor for the enzyme pyruvate carboxylase in gluconeogenesis?

Topic: Nutrition

Vitamin B1 (Thiamine)

Vitamin B6 (Pyridoxine)

Vitamin B7 (Biotin)

Vitamin B12 (Cobalamin)

None

10.

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

Topic: Nutrition

Calcium

Magnesium

Iron

Zinc

None

11.

Which process generates the most ATP during cellular respiration?

Topic: Respiration

Glycolysis

Krebs cycle

Oxidative phosphorylation

Fermentation

None

12.

Which molecule is produced as a result of anaerobic respiration in muscle cells?

Topic: Respiration

Ethanol

Lactate

Acetyl-CoA

Citrate

None

13.

Which condition is characterized by the inability of red blood cells to carry sufficient oxygen due to a genetic mutation in haemoglobin?

Topic: Transportation

Thalassemia

Anaemia

Sickle cell disease

Haemophilia

None

14.

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

Topic: Transportation

Red blood cells

White blood cells

Platelets

Plasma

None

15.

Which condition results from the progressive loss of kidney function over time?

Topic: Excretion

Hepatitis

Chronic kidney disease (CKD)

Pancreatitis

Diabetes

None

1 out of 15

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Class 10 Practice - Level 3 - Life Processes - Set 2

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