Practice MCQ Questions and answers on Biology-GK

1

In a healthy person rate of heart beat on one minute is

A) 58 times B) 67 times C) 72 times D) 90 times

Discuss

Answer & Solution

Answer: Option C

Solution:

In a healthy person rate of heart beat on one minute is 72 times.

2

The word histology is related with

A) Hepatology B) Hematalogy C) Histology D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

Option A: Hepatology
Hepatology is the branch of medicine that deals with the study of the liver, its functions, diseases, and disorders. It is not related to histology.

Option B: Hematology
Hematology is the branch of medicine and biology that focuses on the study of blood, blood-forming tissues, and blood-related disorders. It is not related to histology.

Option C: Histology
Histology is the correct answer. It is the study of tissues, involving the microscopic examination of biological tissues to understand their structure, organization, and function.

Option D: None of these
This option suggests that none of the provided options are correct. However, the correct answer is Option C: Histology.

So, the correct answer is Option C: Histology, as it directly pertains to the field of histology, which is the study of tissues. Options A and B are not related to histology, and Option D signifies that none of the given options are correct.

3

Which one of the following statements regarding haemoglobin is correct?

A) Haemoglobin present in RBC can carry only oxygen but not carbon dioxide B) Haemoglobin of RBC can carry both oxygen and carbon dioxide C) Haemoglobin of RBC can carry only carbon dioxide D) Haemoglobin is only used for blood clotting and not for carrying gases

Discuss

Answer & Solution

Answer: Option B

Solution:

During respiration, about 97% of oxygen is transported by Red Blood Cells in blood and the remaining 3% gets dissolved in the plasma.Around 20-25% of carbon dioxide is carried by haemoglobin as carbamino-haemoglobin.
Oxygen enters the blood from the lungs and carbon dioxide is expelled out of the blood into the lungs. The blood serves to transport both gases. Oxygen is carried to the cells. Carbon dioxide is carried away from the cells.

4

The vitamin required for coagulation of blood is

A) B6 B) C C) K D) B

Discuss

Answer & Solution

Answer: Option C

Solution:

Vitamin K is an essential vitamin that is needed by the body for blood clotting, bone building, and other important processes.

5

Amount of blood found in the body of man is

A) 10% of total body weight B) 25% of total body weight C) 7% total body weight D) 9% of total body weight

Discuss

Answer & Solution

Answer: Option C

Solution:

Amount of blood found in the body of man is 7% total body weight.

6

The site of RBC formation in human body is

A) Heart B) Spleen C) Liver D) Bone marrow

Discuss

Answer & Solution

Answer: Option D

Solution:

Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow called hemocytoblasts give rise to all of the formed elements in blood.

7

Important component that helps in clotting of the blood is called ________ .

A) Haemoglobin B) Platelets C) Serum D) Plasma

Discuss

Answer & Solution

Answer: Option B

Solution:

The main job of platelets, or thrombocytes, is blood clotting. Platelets are much smaller in size than the other blood cells. They group together to form clumps, or a plug, in the hole of a vessel to stop bleeding.

8

The valve present between left auricle and left ventricle is

A) Mitral B) Tricuspid C) Semilunar D) Pulmonary

Discuss

Answer & Solution

Answer: Option A

Solution:

The valve present between left auricle and left ventricle is mitral valve.

9

Function of heart in human body is

A) Work like pumping machines B) To release energy C) To increase temperature D) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

Function of heart in human body is work like pumping machines.

10

Function of haemoglobin is

A) To transport oxygen B) Destruction of bacteria C) To check the loss of blood D) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues. Myoglobin, in muscle cells, accepts, stores, transports and releases oxygen.