Here are top 100 Biology Questions and Answers or all competitive exams. These questions are useful for any competitive exam like IAS, Bank PO, SSC CGL, RAS, CDS, UPSC exams, and all state-related exams. Candidates can check Biology General Knowledge Questions and practice daily.
Best Biology Questions with Answers for All Competitive Exams
In this section you will get the best and most expected Biology GK questions. These questions are very unique and new, Upcoming examinations. We cover all topics (Botany and Zoology) MCQ Online Test. Practice regularly to get good marks in your exam in (Biology GK MCQ Section).
Biology GK Questions Answers MCQ
Q1: Which of the following substances act as fuel in the human body?
(A) Protein
(B) Vitamin
(C) Carbohydrate
(D) Water
Ans: (C) Carbohydrate
Q2: The capsules cover is made by –
(A) Protein
(B) Egg peel
(C) Cellulose
(D) Starch
Ans: (D) Starch
Q3: The major component of honey is-
(A) glucose
(B) Sucrose
(C) Maltose
(D) Fructose
Q4: Which of the following sugars provide immediate energy?
(A) lactose
(B) Cellulose
(C) Maltose
(D) glucose
Ans: (D) glucose
Q5: Which of the following gives the athlete more energy quickly?
(A) fat
(B) Vitamin
(C) Protein
(D) Carbohydrate
Ans: (D) Carbohydrate
Q6: How many amino acids are required to make protein?
(A) 10
(C) 20
(B) 15
(D) 25
Ans: (C) 20
Q7: What makes tissues in the body?
(A) Protein
(C) Carbohydrate
(B) fat
(D) Vitamin
Ans: (A) Protein
Q8: What is an enzyme basically?
(A) Carbohydrate
(C) lipids
(B) Protein
(D) amino acids
Ans: (B) Protein
Q9: In accelerating the process of chemical reaction in biological systems responsible substance is-
(A) Bacteria
(C) enzyme
(B) D.N.A.
(D) Protein
Ans: (C) enzyme
Q10: The percentage of protein in soybean is-
(A) 42%
(C) 60%
(B) 50%
(D) 80%
Ans: (A) 42%
Q11: Which does not contain protein?
(A) Meat
(B) Milk
(C) Rice
(D) Pulses
Ans: (C) Rice
Q12: Which of the following is the largest source of protein?
(A)
(C) Peas
(B) Gram
(D) Soybean
Ans: (D) Soybean
Q13: Where is the fat stored in the human body-
(A) oozing skin
(B) Adipose tissue
(C) liver
(D) in epithelium
Ans: (B) Adipose tissue
Q14: Which of the following food gives the most energy per gram
(A) Protein
(C) Carbohydrate
(B) fat
(D) Vitamin
Ans: (C) Carbohydrate
Q15: Who has propounded the word ‘vitamin’?
(A) Darwin
(C) Funk
(B) Pasteur
(D) Landeck
Ans: (C) Funk
Q16: Which of the following is called defensive material?
(A) Vitamin
(C) Carbohydrate
(B) Protein
(D) fat
Ans: (A) Vitamin
Q17: Carrot is a rich source of which vitamin?
(A) Vitamin A
(C) Vitamin D
(B) Vitamin C
(D) Vitamin E
Ans: (A) Vitamin A
Q18: Vitamin A is stored in the human body at-
(A) liver
(C) spleen
(D) abdominal
(B) In the stomach
Ans: (A) liver
Q19: The chemical name of Vitamin E is-
(A) Retinol
(C) Pyridoxine
(B) Riboflavin
(D) Tocopherol
Ans: (D) Tocopherol
Q20: The blood clot in the human body is made up of which vitamin?
(A) Vitamin K
(C) Vitamin E
(B) Vitamin D
(D) Vitamin C
Ans: (A) Vitamin K
Q21: Which of the following is present in the teeth?
(A) Protein
(C) Carbohydrate
(B) calcium
(D) Minerals
Ans: (B) calcium
Q22: Which of the following minerals is most needed to control heartbeat?
(A) Sodium
(B) Sulfur
(C) Potassium
(D) Iron
Ans: (C) Potassium
Q23: Seaweeds are the main source of
(A) Iron
(B) Chlorine
(C) Bromine
(D) Iodine
Ans: (D) Iodine
Q24: What is the average percentage of oxygen in the human body?
(A) 25%
(C) 40%
(B) 30%
(D) 65%
Ans: (D) 65%
Q25: What is found in spinach leaves?
(A) Vitamin
(C) Carbohydrate
(B) Iron
(D) fat
Ans: (B) Iron
Q26: Which is rich in iron?
(B) eggs
(D) Milk
(A) Orange
(C) Green Vegetables
Ans: (C) Green Vegetables
Q27: Anemia is caused due to deficiency of-
(A) Iodine
(C) Iron
(B) calcium
(D) Zinc
Ans: (C) Iron
Q28: Which body part is affected by typhoid?
(A) Pancreas
(B) stomach
(D) brain
(C) intestine
Ans: (C) intestine
Q29: The protozoa responsible for dysentery is-
(A) Entamoeba
(C) Photographic
(B) Amoeba
(D) Trypanosoma
Ans: (A) Entamoeba
Q30:What causes cholera?
(A) Bacteria
(C) fungus
(B) Virus
(D) Algae
Ans: (A) Bacteria
Q31: ELISA test is done to check which of the following?
(A) Gonorrhea
(C) tuberculosis
(B) Diabetes
(D) AIDS
Ans: (D) AIDS
Q32: Which of the following causes tooth loss?
(A) Zinc
(C) Fluorine
(B) Iron
(D) copper
Ans: (C) Fluorine
Q33: Which image device is used to detect kidney stones?
(A) Tomography
(C) Ultrasound
(B) CT scan
(D) C.A.T. Scan
Ans: (B) CT scan
Q34: poisoning of which heavy metals cause liver cirrhosis
Does it
(A) Copper
(B) lead
(C) Mercury
(D) Zinc
Ans: (A) Copper
Q35: Inadequate supply of blood in the human body is called-
(A) Ischemia
(C) Hemostats
(B) Hyperemia
(D) Hemorrhage
Ans: (A) Ischemia
Q36: Typhoid is produced by-
(A) Pseudomonas species
(B) Staphylococcus species
(C) Bacillus Species
(D) Salmonella Ty phi
Ans: (D) by Salmonella Typhi
Q37: B. C. G. Immunization use for
(A) For measles
(C) Diphiria
(B) For T. B.
(D) For leprosy
Ans: (B) For T. B.
Q38: Which of the following diseases is not caused by water?
(B) Typhoid
(D) Amebiasis
(A) Flu
(C) Cholera
Ans: (A) Flu
Q39: Pneumonia disease affects which part of the human body?
(A) intestine
(B) bone mass
(D) Lunga
(C) liver
Ans: (D) Lunga
Q40: Which of the following is not soluble in fat?
(A) Vitamin A
(C) Vitamin E
(B) Vitamin B
(D) Vitamin K
Ans: (B) Vitamin B
Q41: Which of the following decreases in anemia?
(A) Hemoglobin
(C) Hyoglobin
(B) Riboflavin
(D) Carotene
Ans: (A) Hemoglobin
Q42: Deficiency of which vitamin is the main cause of night blindness?
(A) Vitamin A
(C) Vitamin C
(B) Vitamin B,
(D) Vitamin D
Ans: (A) Vitamin A
Q43: Whose scientific name is Thiamine?
(A) Vitamin C
(C) Vitamin B1
(B) Vitamin A
(D) Vitamin D
Q44: The best source of Vitamin C is-
(A) Apple
(B) Mango
(C) Amla
(D) Milk
Q45: The chemical name of Vitamin C is-
(A) citric acid
(C) Oxalic acid
(B) ascorbic acid
(D) Nitric acid
Ans: (B) ascorbic acid
Q46: Bleeding of gums is caused due to deficiency of which vitamin?
(A) Vitamin A
(C) Vitamin C
(B) Vitamin B
(D) Vitamin D
Ans: (C) Vitamin C
Q47: Which vitamin is found in abundance in fish liver oil?
(B) Vitamin C
(D) Vitamin E
(A) Vitamin A
(C) Vitamin D
Ans: (C) Vitamin D
Biology – Questions and Answers for Entrance Examination
1. For which among the following is not a true fruit?
A. Apple
B. Date
C. Grape
D. Plum
Answer : D. Plum
2. Which of the following is least infectious?
A. leprosy
B. hepatitis
C. tuberculosis
D. conjunctivitis
Answer : A. leprosy
3. Which of the following is not a mosquito-borne disease?
A. Dengue fever
B. Malaria
C. Sleeping sickness
D. Filariasis
Answer : C. Sleeping sickness
4. In certain amino acids, which one of the following elements is found in addition to carbon, hydrogen, nitrogen and oxygen?
A. Phosphorus
B. Zinc
C. Calcium
D. Sulphur
Answer : D. Sulphur
5. Among the following elements, which one is essential for the transmission of impulses in the nerve fibre?
A. Calcium
B. Iron
C. Sodium
D. Zinc
Answer : A. Calcium
6. The vitamin which is very liable and easily destroyed during cooking as well as storage is
A. Vitamin A
B. Vitaminb6
C. Vitamin C
D. Vitamin K
Answer : C. Vitamin C
7. The compound used in anti-malarial drug is
A. Aspirin
B. Neoprene
C. Isoprene
D. Chloroquin
Answer : D. Chloroquin
8. Which of the following is a skin disease?
A. Anaemia
B. Pellagra
C. Osteomalacia
D. Rickets
Answer : B. Pellagra
9. The richest source of vitamin D is
A. Cod liver oil
B. Spinach
C. Milk
D. Cheese
Answer : A. Cod liver oil
10. Which of the following tests helps in diagnosis of cancer?
A. X-ray
B. Urine test
C. Blood test
D. Biopsy test
Answer : D. Biopsy test
11. Which one of the following is an enzyme?
A. Glucagon
B. Insulin
C. Somatotropin
D. Trypsin
Answer : D. Trypsin
12. Which vitamin is provided by sunlight to the body?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D
Answer : D. Vitamin D
13. The deficiency of which of the following leads to dental caries?
A. Iron
B. Copper
C. Fluorine
D. Zinc
Answer : C. Fluorine
14. Healing of wounds is hastened by vitamin
A. A
B. E
C. C
D. K
Answer : C. C
15. Which of the following diseases is caused by the bite of a mad dog?
A. Hydrocele
B. Hydrophobia
C. Hydrocephatus
D. Hydroperitoneum
Answer : B. Hydrophobia
16. Which of the following vegetable proteins is considered as good as an animal protein?
A. Soyabean protein
B. corn protein
C. Wheat protein
D. Bengal gram protein
Answer : A. Soyabean protein
17. Carotene in Indian cow’s milk causes
A. Creamish white colour
B. yellow colour
C. deep yellow colour
D. no change
Answer : B. yellow colour
18. A woman who weighs 45 kg and whose work involves a lot of physical exertion needs
A. 2800 calories per day
B. 3000 calories per day
C. 25000 calories per day
D. 3700 calories per day
Answer : B. 3000 calories per day
19. Foot and mouth disease is found in
A. Cats and dogs
B. Cattle
C. Poultry
D. Humans
Answer : B. Cattle
20. Which one of the following is a primate?
A. Bear
B. Otter
C. Loris
D. Pangolin
Answer : C. Loris
21. To which one of the following types of organisms do mushrooms belong?
A. Algae
B. Ferns
C. Fungi
D. Lichens
Answer : C. Fungi
22. Food wrapped in newspaper is likely to get contaminated with
A. Lead
B. Aluminium
C. Iron
D. Magnesium
Answer : A. Lead
23. Which one of the following produces seeds but no flowers?
A. Cashew nut
B. Coffee
C. Ground nut
D. Pine
Answer : C. Ground nut
24. Which one of the following plants is used for green manuring in India?
A. Wheat
B. Sunhemp
C. Cotton
D. Rice
Answer : B. Sunhemp
25. The combination of foods providing protein quality nearest to that of meat is
A. Wheat, dal and groundnuts
B. Bread and butter
C. Sprouted gram and groundnuts
D. Groundnuts and jiggery
Answer : C. Sprouted gram and groundnuts
26. Which one of the following disease is Inheritable?
A. Leukaemia
B. Colour blindness
C. Malignancy
D. Hepatitis
Answer : B. Colour blindness
27. Which one of the following elements are present in all proteins? 1. Carbon 2. Hydrogen 3. Oxygen 4. Nitrogen
A. 2 and 3
B. 1,2 and 4
C. 1,3 and 4
D. 1,2,3 and 4
Answer : D. 1,2,3 and 4
28. For which one among the following diseases no vaccine is yet available?
A. Tetanus
B. Malaria
C. Measles
D. Mumps
Answer : B. Malaria
29. Which of the following vitamins is synthesised in the body by intenstinal bacteria?
A. vitamin B1
B. vitamin B4
C. vitamin D
D. vitaminsK
Answer : D. vitaminsK
30. BCG vaccination (Bacillus Calmette Guerine) is injected to get immunity from
A. Polio
B. Cholera
C. Small pox
D. Tuberculosis
Answer : D. Tuberculosis
31. In which one of the following, antibody formations take place?
A. RBC’s
B. Blood platelets
C. Blood Plasma
D. Donnan’s membrane
Answer : C. Blood Plasma
32. From the evolutionary point of view, which one of the following is closer to man?
A. Dolphin
B. Flying fish
C. shark
D. tortoise
Answer : A. Dolphin
33. How do most insects respire?
A. through skin
B. through gills
C. by lungs
D. by trachea system
Answer : D. by trachea system
34. Which one of the following part of human brain is the regulating centre for swallowing and vomiting?
A. Cerebellum
B. cerebrum
C. medulla oblongata
D. pons
Answer : C. medulla oblongata
35. Production of which one of the following is a function of the liver?
A. Lipase
B. Urea
C. Mucus
D. Hydrochloric acid
Answer : B. Urea
36. During sleep a man’s blood pressure
A. Increases
B. decreases
C. remains constant
D. fluctuates
Answer : D. fluctuates
37. Oncogene is responsible for
A. Aids
B. typhoid
C. malaria
D. cancer
Answer : D. cancer
38. Which acid is produced when milk gets sour?
A. Acetic acid
B. Tartaric acid
C. Lactic acid
D. Butyric acid
Answer : C. Lactic acid
39. Two richest kown sources of edible protein are
A. Meat and eggs
B. Milk and vegetables
C. Soyabean and groundnut
D. Some algae and other micro-organisms
Answer : C. Soyabean and groundnut
40. Which nutrients are most likely to be affected by food processing and storage?
A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins
Answer : D. Vitamins
41. Which one of the following parts of the pitcher plant becomes modified into a pitcher?
A. Stem
B. leaf
C. stipule
D. petiole
Answer : B. leaf
42. In which one of the following animals is respiration done by skin?
A. Flying fish
B. Sea horse
C. Frog
D. Chameleon
Answer : C. Frog
43. Which one of the following bacteria helps in improving the soil fertility?
A. Clostridium
B. Rhizobium
C. Salmonella
D. Staphylococcus
Answer : B. Rhizobium
44. Which chamber of human heart pumps fully oxygenated blood to aorta and hence to the body?
A. Right Auricle
B. Left Auricle
C. Right Ventricle
D. Left Ventricle
Answer : D. Left Ventricle
45. Which one of the following is a vitamin?
A. Citric acid
B. Folic acid
C. Glutamic acid
D. Linoleic acid
Answer : B. Folic acid
46. Which one of the following is responsible for converting milk into curd?
A. Fungi
B. Bacteria
C. Virus
D. None of these
Answer : B. Bacteria
47. In which one of the following animals is skin a respiratory organ?
A. Cockroach
B. Frog
C. shark
D. Whale
Answer : B. Frog
48. A typical human ribcage consists of how many ribs?
A. 12
B. 14
C. 16
D. 24
Answer : D. 24
49. What is the pH level of blood of a normal person?
A. 4.0 – 4.5
B. 6.45 – 65.5
C. 7.35 – 7.45
D. 8.25 – 8.35
Answer : C. 7.35 – 7.45
50. Which of the following disease is not a caused by viruses?
A. Cholera
B. Chickenpox
C. Hepatitis
D. Measles
Answer . A. Cholera
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