MCQs is one of the best ways to test a student’s comprehension of a concept. Academic Task subject experts have prepared these Biology MCQs based on current trends and practices. Most repeated general science Biology MCQs section, frequently encountered in GAT, NAT, GRE, SAT, MCAT Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams or tests as well as government and private job assessments. The content of qurumcqs.com is updated regularly, with the addition of new topics, more questions, and useful links. Medical biology most repeated MCQs include all topics like Basic Biology MCQs for Entry Test, MCQ on Cell Signaling, MCQ on Mollusca, MCQ on Mollusca, MCQ on Respiratory System, MCQ on Nutrition in Plants, MCQ on Vitamins, MCQ on Plant Tissue Culture, MCQ on Bioinformatics, MCQ on Food Microbiology, MCQ on Food Microbiology, Human Health and Disease, Genetics, etc.
11. An antibody is made of _________ polypeptide chains?
A. 1
B. 2
C. 3
D. 4
12. 95% of the cytoplasm of RBCs is____________?
A. Hemoglobin
B. Enzymes
C. Salts
D. Other proteins
13. _________________ cells of phloem are directly involved in transport of organic solutes?
A. Parenchyma
B. Companion cell
C. Tracheid
D. Sieve element
14. An infectious disorder of respiratory system is_________________?
A. Cancer
B. Asthma
C. Tuberculosis
D. Emphysema
15. Cuticular transpiration is _____________ of total transpiration?
A. 1-2%
B. 3-4%
C. 5-7%
D. 90%
16. According to cohesion-tension theory, tension is created by__________________?
A. Hydrogen bonding
B. Transpiration
C. Adhesion
D. Root prerssure
17. Deoxygenated blood first enters in _________ part in fishes?
A. Sinus venosus
B. Right atrium
C. Left atrium
D. Conus arteriosus
18. Ozone depletion occurs commonly due to_______________?
A. Carbon dioxide
B. Chlorofluorocarbons
C. UV rays
D. Deforestation
19. Who coined the term CELL?
A. Schwann
B. Schleiden
C. Robert Hook
D. Both a and b
20. “lubb” sound is produced due to___________________?
A. Opening of inlet valve
B. Closure of inlet valve
C. Opening of outlet valve
D. Closure of outlet valve