Exploring Life Processes

What is the primary function of photosynthesis in plants?

• To store nutrients in the roots

• to convert light energy into chemical energy.

• To produce oxygen for respiration

• To absorb water from the soil

Which organ is responsible for gas exchange in the human respiratory system?

• Heart

• Lungs

• Kidneys

• Liver

How do enzymes aid in the digestion of food?

• Enzymes are only active in the stomach and not in the intestines.

• Enzymes convert food into energy without breaking it down.

• Enzymes aid in digestion by breaking down complex food molecules into simpler forms for absorption.

• Enzymes speed up the cooking process of food.

What is the process by which plants lose water vapor called?

• Transpiration

• Photosynthesis

• Condensation

• Evaporation

Name the male reproductive cells in humans.

• Prostate

• Vas deferens

• Testes

• Sperm

What is the role of red blood cells in the human body?

• Red blood cells produce hormones in the body.

• Red blood cells help in digestion of food.

• Red blood cells transport oxygen and carbon dioxide in the body.

• Red blood cells are responsible for immune response.

How does oxygen enter the bloodstream in humans?

• Oxygen is absorbed through the skin.

• Oxygen enters the bloodstream through the alveoli in the lungs.

• Oxygen is transported by red blood cells from the liver.

• Oxygen enters the bloodstream via the stomach.

What type of enzyme breaks down carbohydrates?

• Carbohydrases

• Proteases

• Lipases

• Nucleases

Describe the pathway of blood circulation in the human body.

• Blood is pumped directly from the lungs to the body without going through the heart.

• Blood circulates from the heart to the body, then returns to the heart, and is pumped to the lungs for oxygenation before returning to the heart again.

• Blood circulates in a single loop without returning to the heart.

• Blood flows only to the lungs and does not return to the heart.

What is the significance of chlorophyll in photosynthesis?

• Chlorophyll is essential for capturing light energy in photosynthesis.

• Chlorophyll is a type of nutrient that plants need to grow.

• Chlorophyll helps in the respiration process of plants.

• Chlorophyll is responsible for water absorption in plants.