General Science – Biology MCQs

106. Which among the following correctly refers to Ischemia?

(A) restriction in blood supply due to factors in the blood vessels
(B) Abrupt fall in the blood Pressure
(C) necrosis in a blood vessel due to a local lack of oxygen
(D) condition of severely deficient supply of oxygen to the body

Correct Answer: (A) restriction in blood supply due to factors in the blood vessels

107. What is the correct name of premature death of cells and living tissue?

(A) Neutrophilia
(B) Necrosis
(C) Neoplasia
(D) Nephrosis

Correct Answer: (B) Necrosis

108. Which of the following groups of plants is known as Magnoliophyta?

(A) Gymnosperms
(B) Angiosperms
(C) Algae
(D) Bryophyte

Correct Answer: (B) Angiosperms

109. Which among the following is a correct definition of Hematocrit?

(A) proportion of blood volume that is occupied by red blood cells
(B) proportion of blood volume that is occupied by white blood cells
(C) proportion of blood volume that is occupied by Leukocytes and Thrombocytes
(D) proportion of blood volume that is occupied by plasma

Correct Answer: (A) proportion of blood volume that is occupied by red blood cells

Answer Explanation:

Hematocrit levels are used in doping tests of Athletes , (the RBCs are carriers of Oxygen). hematocrit levels also denotes the blood iron. hematocrit levels of 38 or higher are normally suitable for the donors to donate their blood. Here please note that sometimes its is asked in exams about the ion which can help better in blood coagulation and normally options given are Ca, Na, K & Fe+3. The obvious answer is Fe+3.

110. Which among the following was the first vaccine ever to be developed?

(A) Cholera
(B) Smallpox
(C) Rabies
(D) Tetanus

Correct Answer: (B) Smallpox

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