Solved General Biology MCQs Quiz for Competitive Exams Set 16

General Biology Mcq’s Quiz with Answers for NTS, CSS, FPSC, PMS and PPSC Test Online Preparation. These Objective type Questions are also for students who are willing to attempt MCAT entry test. MCQs are taken from Caravan General Knowledge Book.

1. Which act as a hormone ?

(a) Carbohydrates
(b) Proteins
(c) Vitamins
(d) Fats

2. The Hormones are the _______ ?

(a) Chemical messengers
(b) Zoological messengers
(c) Physical messengers
(d) Biophysical messengers

3. The master gland is pituitary gland which controls the activities of _______ ?

(a) Adrenal gland
(b) Adrenal and thyroid glands
(c) Pancreas and Gonads glands
(d) All glands

4. Who discovered bacteria first in 1697 ?

(a) Iwanowsky
(b) Leeuwenhoek
(c) Louis Pasteur
(d) Robert Koch

5. One of the followings is not a characteristic of an insect ?

(a) Their body is divided into head, thorax and abdomen
(b) They possess a pair of legs in each segment
(c) They possess two wings for flying
(d) Two prominent antennae are present on the head

6. An inactive phase of the life cycle during which animal stores a lot of food inside the body and develops a covering around the body is called ____ ?

(a) Pupa
(b) Larva
(c) Nymph
(d) Adult

7. If the temperature rises gradually up to 40° C, the rate of photosynthesis ______ ?

(a) Increases
(b) Decreases
(c) Remains constant
(d) May stop altogether

8. An adult requires how many proteins daily ______ ?

(a) 10 – 20 grams
(b) 30 – 50 grams
(c) 50 – 100 grams
(d) More than 100 grams

9. Proteins are required to make which of the followings ?

(a) Antibodies
(b) Connective tissues
(c) Hormones
(d) All these

10. Lipids are obtained from _________ ?

(a) Animal sources
(b) Plant sources
(c) Both plant and animal sources
(d) Synthetically

11. One mole of haemoglobin containing blood carries how much oxygen ?

(a) 16 ml
(b) 18 ml
(c) 20 ml
(d) 22 ml

12. The rate of breathing is regulated by _________ ?

(a) Amount of oxygen in the blood
(b) Amount of carbon dioxide in the blood
(c) Amount of oxygen in the cells
(d) Amount of carbon dioxide in the cells

13. The exchange of carbon dioxide and oxygen gas between the cell and the atmosphere during photosynthesis takes place by ________ ?

(a) Active transport
(b) Facilitated diffusion
(c) Osmosis
(d) Diffusion

14. Leucocytes (white blood cells) are produced in ______ ?

(a) Lymph
(b) Spleen
(c) Bone marrow
(d) Ribs

15. Haemophilia is because of absence of _________ ?

(a) Rh factor
(b) Clotting
(c) Antigens
(d) Antibodies