Different proteins differ from one another mainly in their:

Number and sequence of amino acids

Class 9 Biology · Chapter 6 · Test 3

Proteins and Lipids

25 MCQs on proteins, amino acids, essential and non-essential amino acids, protein functions, lipids, glycerol, fatty acids, saturated and unsaturated fats, fats, oils, phospholipids, and lipid functions.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
Proteins are polymers of:
- AAmino acids
- BFatty acids
- CMonosaccharides
- DNucleotides
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Answer: A
The textbook states that proteins are polymers of amino acids.
Question 2
Which biomolecules are described as the most abundant biomolecules in a cell?
- AProteins
- BLipids
- CCarbohydrates
- DNucleic acids
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Answer: A
The textbook states that proteins are the most abundant biomolecules in a cell.
Question 3
Different proteins differ from one another mainly in their:
- ANumber and sequence of amino acids
- BNumber of sugars
- CTypes of lipids
- DNumber of nucleotides
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Answer: A
The textbook states that different proteins have different numbers and sequences of amino acids.
Question 4
How many amino acids participate in the formation of most proteins?
- A10
- B20
- C50
- D170
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Answer: B
The textbook states that 20 amino acids participate in the formation of most proteins.
Question 5
Insulin is made up of:
- A20 amino acids
- B51 amino acids
- C170 amino acids
- D574 amino acids
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Answer: B
The textbook states that insulin consists of 51 amino acids.

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