Biology Exam Dec 2024 Grade 10

Front

What is Vitamin A and its sources?

Back

Vitamin A is a fat-soluble vitamin important for vision, immune function, and skin health. Sources include green leafy vegetables, dairy products, and fish.

Front

Which food is NOT a source of Vitamin A?

Back

Candy is NOT a source of Vitamin A.

Front

What environmental change increases breeding sites for mosquitoes?

Back

Agricultural intensification increases breeding sites for mosquitoes, affecting malaria prevalence.

Front

What are the biological levels of organization from smallest to largest?

Back

Cell -> Tissue -> Organ -> Organ System -> Organism.

Front

How does a decrease in carbon dioxide concentration affect photosynthesis?

Back

A decrease in carbon dioxide concentration would decrease the rate of photosynthesis.

Front

What hormone does the pancreas release to increase blood sugar levels?

Back

The pancreas releases glucagon to increase blood sugar levels when they are low.

Front

Define photosynthesis.

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the role of insulin in the body?

Back

Insulin is a hormone that helps regulate blood sugar levels by facilitating the uptake of glucose into cells.

Front

What is the significance of deforestation in relation to malaria?

Back

Deforestation can create stagnant water bodies, which serve as breeding sites for mosquitoes, potentially increasing malaria transmission.

Front

Explain the term 'biological levels of organization'.

Back

Biological levels of organization refer to the hierarchical structure of biological systems, ranging from cells to organisms.