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Practice MCQ Questions and answers on Biology-GK

Learn and practice General Knowledge questions and answers on Biology with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-5 section-2

Each section contains 100 MCQs on Biology .
41
When a foreign body inter into blood circulatory system the reaction is started by
Discuss
Answer & Solution
Answer: Option B
Solution:
When a foreign body inter into blood circulatory system the reaction is started by white blood cells.
42
How many chambers does a human heart have?
Discuss
Answer & Solution
Answer: Option B
Solution:
Human heart has 4 chambers.
43
The muscle which separate the right side and left side of heart is known as
Discuss
Answer & Solution
Answer: Option C
Solution:
A wall of muscle called the septum separates the left and right atria and the left and right ventricles.
44
What is the pH value range of human blood?
Discuss
Answer & Solution
Answer: Option D
Solution:
Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40.
45
The main function of hemoglobin is
Discuss
Answer & Solution
Answer: Option A
Solution:
About 70 percent of your body's iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues.
46
The colour of Hemoglobin is
Discuss
Answer & Solution
Answer: Option A
Solution:
The colour of Hemoglobin is red.
47
The elastic vessels which transport blood to the heart is known as
Discuss
Answer & Solution
Answer: Option B
Solution:
The elastic vessels which transport blood to the heart is known as veins.
48
The elastic vessels which transport blood from the heart is known as
Discuss
Answer & Solution
Answer: Option A
Solution:
The elastic vessels which transport blood from the heart is known as arteries.
49
White blood cell act
Discuss
Answer & Solution
Answer: Option A
Solution:
White blood cell, also called leukocyte or white corpuscle, a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of motility, and defends the body against infection and disease by ingesting foreign materials and cellular debris, by destroying infectious agents and cancer cells.
50
The top chambers of human heart are called
Discuss
Answer & Solution
Answer: Option B
Solution:
The top chambers of human heart are called atrium.