Practice mode / Biology ____ cells of phloem are directly involved in transport of organic solutes? A Option A: Parenchyma B Option B: Companion cell C Option C: Tracheid D Option D: Sieve element Correct answer D. Sieve element Show answer
Question 01 / Biology 95% of the cytoplasm of RBCs is? A Option A: Hemoglobin B Option B: Enzymes C Option C: Salts D Option D: Other proteins Correct answer A. Hemoglobin Show answer Open question
Question 02 / Biology An antibody is made of ____ polypeptide chains? A Option A: 1 B Option B: 2 C Option C: 3 D Option D: 4 Correct answer D. 4 Show answer Open question
Question 03 / Biology ____ of earth surface is covered with water? A Option A: 10% B Option B: 30% C Option C: 75% D Option D: 90% Correct answer C. 75% Show answer Open question
Question 04 / Biology Gaseous exchange in birds occurs at level of? A Option A: Alveoli B Option B: Air sacs C Option C: Bronchi D Option D: Parabronchi Correct answer D. Parabronchi Show answer Open question
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