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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-6 section-5

Each section contains 100 MCQs on Biology .
51
Saliva secreted from mouth digest
Discuss
Answer & Solution
Answer: Option B
Solution:
Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates) into sugars, which your body can more easily absorb. Saliva also contains an enzyme called lingual lipase, which breaks down fats.
52
Which organ has finger like outgrowths which are called as Villi (Singular Villus)?
Discuss
Answer & Solution
Answer: Option C
Solution:
The internal walls of the small intestine are covered in finger-like tissue called villi. Each of these villi is covered in even smaller finger-like structures called microvilli.
53
A large number of bacteria in our digestive system, especially in the ________ and large intestine are important in completing digestive processes.
Discuss
Answer & Solution
Answer: Option B
Solution:
A large number of bacteria in our digestive system, especially in the small intestine and large intestine are important in completing digestive processes.
54
Pepsin is an enzyme that digests ________ .
Discuss
Answer & Solution
Answer: Option A
Solution:
Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.
55
Which among the following is used to treat indigestion?
Discuss
Answer & Solution
Answer: Option A
Solution:
Antacid is used to treat indigestion.
56
Pepsin is a
Discuss
Answer & Solution
Answer: Option B
Solution:
Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.
57
The hormone which stimulates the stomach for the production of digestive juice is
Discuss
Answer & Solution
Answer: Option A
Solution:
Gastrin is a hormone produced by the stomach, which stimulates the release of gastric acid.
58
Most absorption of nutrients occurs in the
Discuss
Answer & Solution
Answer: Option D
Solution:
Most absorption of nutrients occurs in the small intestine.
59
Which of the following is the largest digestive gland in humans?
Discuss
Answer & Solution
Answer: Option D
Solution:
Hepato-Pancreas is the largest digestive gland.
60
Which one among the following is the hardest part of our body ?
Discuss
Answer & Solution
Answer: Option C
Solution:
Enamel of teeth is the hardest part of our body.