FBISE Class 9th (SSC-l)
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Total MCQs
FBISE Class 9th (SSC-l)
Answer: Starch is the principal storage polysaccharide of plants, stored in seeds, roots and tubers.
Answer: Lactose, the sugar of milk, is a disaccharide of glucose and galactose.
Answer: Glycogen, also called animal starch, is stored mainly in the liver and muscles.
Answer: Collagen is a fibrous protein that provides strength to bones, tendons and connective tissues.
Answer: Lipids store energy, insulate and form membranes, but genetic information is carried by nucleic acids.
Answer: Cellulose is a structural polysaccharide that provides rigidity to plant cell walls.
Answer: Every amino acid contains an amino group (-NH2) and a carboxyl group (-COOH).
Answer: Fructose occurs naturally in fruits and is therefore known as fruit sugar.
Answer: Insulin is a protein hormone secreted by the pancreas that controls blood glucose concentration.
Answer: The phosphate head of a phospholipid is water-loving (hydrophilic), while the fatty acid tails are hydrophobic.
Answer: Carbohydrates are polymers built from monosaccharide units.
Answer: Vitamin D is synthesized in the skin in the presence of sunlight.
Answer: Lactose is the disaccharide present in milk and is therefore called milk sugar.
Answer: Vitamin A is required for good vision, and its deficiency leads to night blindness.
Answer: Vitamin K is essential for the synthesis of blood clotting factors.
Answer: Potatoes and other tubers store starch and are rich sources of this polysaccharide.
Answer: Iron is needed to form hemoglobin, and its deficiency causes anemia.
Answer: Each nucleotide is made of a pentose sugar, a phosphate group and a nitrogenous base.
Answer: Sex hormones such as testosterone and estrogen belong to the steroid group of lipids.
Answer: Messenger RNA is the largest because it must carry the entire genetic message from DNA.