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What is the basic unit of life?
a) Tissue
b) Organ
c) Cell
d) Organ System

Answer: c) Cell
Explanation: Cells are the fundamental building blocks of all living organisms.

2.

Which organelle is known as the "powerhouse of the cell"?
a) Nucleus
b) Ribosome
c) Mitochondria
d) Endoplasmic Reticulum

Answer: c) Mitochondria
Explanation: Mitochondria generate energy (ATP) for cellular activities.
3.

What is the process by which plants make their own food?
a) Respiration
b) Transpiration
c) Photosynthesis
d) Digestion

c) Photosynthesis
Explanation: Photosynthesis uses sunlight to convert carbon dioxide and water into glucose and oxygen.

4.

Which of the following is a carbohydrate?
a) Amino acid
b) Lipid
c) Protein
d) Glucose

Answer: d) Glucose
Explanation: Glucose is a simple sugar, a type of carbohydrate.
5.

What is the main function of DNA?
a) Protein synthesis
b) Energy storage
c) Genetic information storage
d) Lipid production

Answer: c) Genetic information storage
Explanation: DNA contains the genetic code that determines an organism's traits.

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