Explanation

• Photosynthesis is the process by which green plants convert light energy into chemical energy stored in glucose.
• It takes place mainly in the chloroplasts, which contain the green pigment chlorophyll.
• Carbon dioxide and water are used to produce glucose, and oxygen is released as a by-product.

Last verified on 08-11-2026

Explanation

• Chromosomes are present in the nucleus of eukaryotic cells.
• They are thread-like structures made of DNA and proteins.
• They carry genetic information.
• They help ensure the accurate distribution of genetic material during cell division.

Last verified on 01-10-2026

Explanation

• Viruses are non-cellular and obligate intracellular parasites.
• They cannot carry out life processes or reproduce without a living host cell.
• Viruses contain either DNA or RNA.
• They are considered to be at the boundary between living and non-living.
• The branch of science that studies viruses is called Virology.

Last verified on 27-07-2026

Explanation

• Chlorophyll is the green pigment responsible for photosynthesis in plants.
• It captures sunlight and converts it into chemical energy to make food.

• Plants use chlorophyll to produce glucose and oxygen through photosynthesis.
• Chloroplasts contain chlorophyll a and b, which absorb sunlight.

Last verified on 22-01-2026

Explanation

• The majority of nutrient absorption in the digestive system occurs in the small intestine,
• Where the final stages of digestion take place.
• This organ's structure, featuring villi and microvilli, creates a large surface area optimized for absorbing digested nutrients and most water into the bloodstream.

Last verified on 08-11-2026