Explore topic-wise MCQs in Biology.

This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

5001.

Which part of the human body shows regeneration?

A. please
B. Brain
C. kidney
D. liver
Answer» E.
5002.

Which enzyme is present in human tears, which kills bacteria?

A. urease
B. Tylin
C. lysozyme
D. amylase
Answer» D. amylase
5003.

In which part of the eye the image of the object is formed?

A. retina
B. pupil
C. iris
D. cornea
Answer» B. pupil
5004.

In the retina present in the human eye, what is present for the differentiation of colors?

A. Choroid
B. iris
C. cones
D. rodus
Answer» D. rodus
5005.

The upper surface of the skin is called?

A. protodermis
B. dermis
C. epidermis
D. none of these
Answer» D. none of these
5006.

Which of the following substances is the hardest substance in the human body?

A. Daltvalk
B. fingernail
C. Dental metal
D. bone
Answer» B. fingernail
5007.

Which part of the human body is not transplanted?

A. Kidney
B. Brain
C. lung
D. heart
Answer» C. lung
5008.

What is the reason for the color of the skin?

A. hormones
B. Melanin
C. Enzyme
D. none of these
Answer» C. Enzyme
5009.

Which of the following organs controls the amount of light entering the eye?

A. Choroid
B. iris
C. retina
D. cornea
Answer» C. retina
5010.

The cornea is a part of which of the following parts of the human body?

A. ear
B. eye
C. kidney
D. Nose
Answer» C. kidney
5011.

Due to the accumulation of which acid in the muscles, a person feels tired?

A. lactic acid
B. citric acid
C. uric acid
D. all these
Answer» B. citric acid
5012.

Which element is present in both cement and bones?

A. calcium
B. Phosphorus
C. nitrogen
D. silicone
Answer» B. Phosphorus
5013.

Which of the following muscles have the property of self-pulsation?

A. kidney
B. bowel
C. heart
D. liver
Answer» D. liver
5014.

Which part of the eye is used in eye donation?

A. ocular lens
B. whole eye
C. retina
D. cornea
Answer» E.
5015.

Where is the skin thickest in humans?

A. on the palm
B. on the buttocks
C. On the head
D. on the floor
Answer» E.
5016.

The most powerful muscle in the human body is?

A. finger
B. feet
C. jaw
D. Wrist
Answer» D. Wrist
5017.

Who performs the function of blood bank in human body?

A. please
B. heart
C. liver
D. none of these
Answer» B. heart
5018.

Deficiency of the following causes anemia?

A. iron
B. calcium
C. Iodine
D. Such as
Answer» B. calcium
5019.

What is an essential element in the formation and maintenance of bones and bones?

A. calcium
B. magnesium
C. silicone
D. zinc
Answer» B. magnesium
5020.

Which part of the body is affected by typhoid?

A. gut
B. stomach
C. Brain
D. none of these
Answer» B. stomach
5021.

What is the process of purification of blood in the human body called?

A. Hemolysis
B. Paralysis
C. dialysis
D. none of these
Answer» D. none of these
5022.

Which of the following causes red color in blood?

A. plasma
B. RBC
C. WBC
D. hemoglobin
Answer» E.
5023.

Oxygen is carried by the blood with the help of which of the following?

A. Bimbanu
B. iron cells
C. leukocyte
D. Lymphocytes
Answer» C. leukocyte
5024.

What is the function of hemoglobin?

A. prevention of anemia
B. Deployment of iron
C. carry oxygen
D. none of these
Answer» D. none of these
5025.

Hemoglobin is an important component of

A. plaque
B. protoplasm
C. RBC
D. WBC
Answer» D. WBC
5026.

What is in hemoglobin?

A. iron
B. copper
C. Such as
D. manganese
Answer» B. copper
5027.

Where does the purification of blood take place?

A. heart
B. liver
C. kidney
D. lung
Answer» D. lung
5028.

The largest artery of the body is?

A. Venakeva
B. ventricles
C. erota
D. none of these
Answer» D. none of these
5029.

Where is pulse rate measured?

A. from the artery
B. nervously
C. from the skin
D. from the vein
Answer» B. nervously
5030.

What changes in blood pressure while sleeping?

A. decreases
B. remains as before
C. grows
D. first decreases then increases
Answer» B. remains as before
5031.

The pressure exerted by blood on the walls of which of the following is called blood pressure?

A. Vein
B. the cell
C. heart
D. artery
Answer» E.
5032.

Heart beats per minute in a healthy person?

A. 50 times
B. 72 times
C. 80 times
D. 95 times
Answer» C. 80 times
5033.

Which metal is found in blood?

A. calcium
B. sodium
C. iron
D. zinc
Answer» D. zinc
5034.

How many brackets are there in the human heart?

A. 2
B. 3
C. 4
D. 5
Answer» D. 5
5035.

How long does it take for the heart to beat once in the human body?

A. 1 second
B. 2 seconds
C. 0.8 sec
D. 1.5 seconds
Answer» D. 1.5 seconds
5036.

What is speed inductor related to?

A. Brain
B. lung
C. Kidney
D. heart
Answer» E.
5037.

Who first studied the blood circulatory system?

A. brown
B. landsteiner
C. Harvey
D. Kornberg
Answer» D. Kornberg
5038.

Proteins are converted into which of the following substances during digestion?

A. fat
B. amino acids
C. sugar
D. glucose
Answer» C. sugar
5039.

Bile is produced by which of the following?

A. liver
B. duodenum
C. pancreas
D. stomach
Answer» B. duodenum
5040.

What is the pace maker related to?

A. lung
B. heart
C. Kidney
D. brain
Answer» C. Kidney
5041.

Which organ absorbs the toxic substances present in the digested food?

A. pancreas
B. liver
C. stomach
D. kidney
Answer» C. stomach
5042.

Bile accumulates?

A. in the duodenum
B. in gall bladder
C. in the spleen
D. in the liver
Answer» C. in the spleen
5043.

Which enzyme is found in saliva?

A. Tylin
B. resins
C. renin
D. Tenin
Answer» B. resins
5044.

Approximately how many feet long is the human digestive tract?

A. 16
B. 18
C. 22
D. 32
Answer» E.
5045.

Which of the following hormones in the human body regulate blood calcium and phosphate?

A. glucagon
B. thyroxine
C. growth hormone
D. parathyroid hormone
Answer» E.
5046.

Which of the following is a special requirement for the digestion of food in the stomach?

A. Water
B. air
C. minerals
D. Enzyme
Answer» E.
5047.

Whose digestion does the saliva released from the mouth do?

A. protein
B. Vitamins
C. starch
D. fat
Answer» D. fat
5048.

Where does the digestion of proteins begin?

A. buccal cavity
B. gas tube
C. abdomen
D. small intestine
Answer» D. small intestine
5049.

Which of the following acid is present in human stomach?

A. picric acid
B. sulfuric acid
C. hydrochloric acid
D. nitric acid
Answer» D. nitric acid
5050.

Which is not a part of the digestive system?

A. liver
B. gut
C. cornea
D. gall bladder
Answer» D. gall bladder