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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-4 section-5

Each section contains 100 MCQs on Biology .
31
Most of the digestion occur in which part of alimentary canal of man
Discuss
Answer & Solution
Answer: Option B
Solution:
Most of the digestion of food takes place in the small intestine which is the longest part of the GI tract. A major digestive organ is the stomach. Within its mucosa are millions of embedded gastric glands.
32
Which of the following is not an enzyme?
Discuss
Answer & Solution
Answer: Option A
Solution:
Oxytocin is not an enzyme.
33
Man has ________ pairs of salivary glands.
Discuss
Answer & Solution
Answer: Option A
Solution:
There are three pairs of major salivary glands: the parotid glands, the submandibular glands, and the sublingual glands.
34
All enzymes are
Discuss
Answer & Solution
Answer: Option B
Solution:
Enzymes are proteins that act as biological catalysts (biocatalysts). Catalysts accelerate chemical reactions.
35
Which one of the following is the correct sequence in the order of decreasing length of the structural parts given below of small intestine in the human body?
Discuss
Answer & Solution
Answer: Option D
Solution:
Ileum-Jejunum-Duodenum is the correct sequence.
36
How many teeth in man comes out twice?
Discuss
Answer & Solution
Answer: Option C
Solution:
20 teeth in man comes out twice.
37
Appetite is triggered by
Discuss
Answer & Solution
Answer: Option D
Solution:
Appetite is triggered by environmental cues such as the smell or taste of food. Appealing foods can stimulate appetite even when hunger is absent.
38
Where are the taste receptors located?
Discuss
Answer & Solution
Answer: Option D
Solution:
The taste receptors are located in epiglottis, upper esophagus and tip of the tongue.
39
Assertion (A): In human body liver has an important role in fat digestion.
Reason (R) : Liver produces two important fat digesting enzymes.
Codes
Discuss
Answer & Solution
Answer: Option C
Solution:
Assertion is true but the reason is false.
40
Fat is completely digested in the
Discuss
Answer & Solution
Answer: Option A
Solution:
The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins.