Explanation

• The egg cell is the female gamete in flowering plants.
• It is located inside the embryo sac within the ovule.

Last verified on 08-11-2026

Explanation

• Plants convert excess glucose into starch for storage.
• Starch is commonly stored in seeds, roots and tubers.

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 active site has a specific shape and chemical properties.
• It binds particular substrates and determines enzyme specificity.

Last verified on 08-11-2026

Explanation

• Proteins are made up of amino acids.
• Amino acids are linked together by peptide bonds to form proteins.

Last verified on 08-11-2026

Explanation

• Macronutrients are the nutrients that are needed in the highest concentration by living organisms.
• They include carbohydrates, proteins, and fats, which provide energy and support growth and maintenance of tissues.

Last verified on 08-11-2026

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

Explanation

• Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed.
• They are mainly made of proteins.
• They are highly specific to their reactions.

Additional information:

• Some enzymes require cofactors like vitamins or metal ions to function.
• Examples: Amylase (breaks starch), Lipase (breaks fats), Protease (breaks proteins).

Last verified on 11-02-2026