MCQs

Q431: About 170 types of amino acids are found to occur in a cells. How many are involved in making proteins?

• A) 170 amino acids
• B) 20 amino acids
• C) 25 amino acids

Q432: The integral property of lipid bilayer in a cell membrane is due to?

• A) Reduction of contact area between water and lipids
• B) Increase of contact area between water and lipid
• C) Polar interaction of lipids

Q433: Water is present in all living systems as universal solvent because of?

• A) Its cohesive force
• B) Its polar nature
• C) High evaporation rate

Q434: Which of the following sugar molecules are condensed to produce sucrose? A. Glucose & galactose B. Glucose & fructose C. Glucose & glucose D. Glucose & fructose 6-phosphate

• A) Glucose & galactose
• B) Glucose & fructose
• C) Glucose & glucose

Q435: The primary purpose of photosystem I in thylakoid membrane is?

• A) Synthesis of ATP
• B) Oxidation of water
• C) Reduction of NADP⁺ to NADPH

Q436: The final electron acceptor in respiratory electron transport chain in mitochondria is?

• A) FAD⁺
• B) NADP⁺
• C) O₂

Q437: In glycolysis glucose is?

• A) Oxidized into pyruvic acid
• B) Reduced into pyruvate
• C) Broken down to G3P

Q438: Reverse transcriptase converts?

• A) ds RNA to ss RNA
• B) ss RNA to ds RNA
• C) ss RNA to ds DNA

Q439: Which of the following virus is having double stranded RNA in its core?

• A) Small pox
• B) Measles virus
• C) Diarrhea virus

Q440: Which invertebrate has exceptionally large and complex brain with highly developed capabilities to learn and remember?

• A) Snail
• B) Cattle fish
• C) Both B and C