FBISE Class 9th (SSC-l)
Explore subjects and practice MCQs
3
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Total MCQs
FBISE Class 9th (SSC-l)
Answer: Evaporation of sweat from the skin removes heat and cools the body.
Answer: Phospholipids form the bilayer that is the main structural component of cell membranes.
Answer: Humans lack cellulase, so cellulose passes undigested and provides roughage.
Answer: Animal fats are rich in saturated fatty acids whose straight chains pack tightly, making them solid.
Answer: Maltose is a disaccharide made of two glucose units joined by a glycosidic bond.
Answer: Oils are liquid at room temperature because they contain mostly unsaturated fatty acids.
Answer: Unsaturated fatty acids have one or more double bonds, which create kinks in the chain.
Answer: Proteins are digested into amino acids, which are absorbed and used to build new proteins.
Answer: Butter, meat and other animal products contain mostly saturated fatty acids.
Answer: The Biuret test gives a violet color when proteins are present.
Answer: DNA stores hereditary information that determines the inherited characteristics of an organism.
Answer: Nitrogen from the amino groups is characteristic of proteins and is absent from carbohydrates and fats.
Answer: Glucose is the main energy source of cells and is oxidized during cellular respiration.
Answer: RNA contains ribose, a five-carbon sugar with an extra hydroxyl group compared to deoxyribose.
Answer: Transfer RNA carries an anticodon that pairs with the codon on mRNA during translation.
Answer: Vitamins are organic compounds required in small amounts to prevent deficiency diseases.
Answer: Zinc is a trace mineral required in very small amounts for enzymes and immune function.
Answer: Fructose is the sweetest of all naturally occurring sugars.
Answer: Insulin is a protein hormone that regulates blood glucose levels.
Answer: A condensation reaction joins amino acids and releases a molecule of water to form a peptide bond.