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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-3 section-10

Each section contains 100 MCQs on Biology .
21
Metal present in Haemoglobin
Discuss
Answer & Solution
Answer: Option B
Solution:
The heme group (a component of the hemoglobin protein) is a metal complex, with iron as the central metal atom, that can bind or release molecular oxygen.
22
The right portion of human heart receives ________ blood.
Discuss
Answer & Solution
Answer: Option B
Solution:
The right portion of human heart receives impure blood.
23
Arteries supplying blood to the heart are called
Discuss
Answer & Solution
Answer: Option C
Solution:
Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function. Also, oxygen-depleted blood must be carried away. The coronary arteries wrap around the outside of the heart.
24
The plasma of the blood contains which among the following constituents?
I. Proteins
II. Salts
III. Hormones
Discuss
Answer & Solution
Answer: Option D
Solution:
The plasma of the blood contains proteins, salts and hormones.
25
Antibodies is produced in the plasma of blood by
Discuss
Answer & Solution
Answer: Option B
Solution:
Antibodies is produced in the plasma of blood by lymphocytes.
26
Which one among the following statements is correct?
Discuss
Answer & Solution
Answer: Option C
Solution:
Except the pulmonary artery, all other arteries carry oxygenated blood.
27
To complete one heart beat the time taken is
Discuss
Answer & Solution
Answer: Option D
Solution:
To complete one heart beat the time taken is 0.8 second.
28
Pace maker is related with
Discuss
Answer & Solution
Answer: Option D
Solution:
A pacemaker is a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate.
29
PH of human blood is
Discuss
Answer & Solution
Answer: Option A
Solution:
The pH scale, ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45.
30
PH value of human blood is
Discuss
Answer & Solution
Answer: Option C
Solution:
PH value of human blood is 7.4.