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NEET Exam  >  NEET Tests  >  NCERT Based Tests for NEET  >  Assertion & Reason Test: Biomolecules - NEET MCQ

Assertion & Reason Test: Biomolecules - NEET MCQ


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10 Questions MCQ Test NCERT Based Tests for NEET - Assertion & Reason Test: Biomolecules

Assertion & Reason Test: Biomolecules for NEET 2025 is part of NCERT Based Tests for NEET preparation. The Assertion & Reason Test: Biomolecules questions and answers have been prepared according to the NEET exam syllabus.The Assertion & Reason Test: Biomolecules MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion & Reason Test: Biomolecules below.
Solutions of Assertion & Reason Test: Biomolecules questions in English are available as part of our NCERT Based Tests for NEET for NEET & Assertion & Reason Test: Biomolecules solutions in Hindi for NCERT Based Tests for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Assertion & Reason Test: Biomolecules | 10 questions in 20 minutes | Mock test for NEET preparation | Free important questions MCQ to study NCERT Based Tests for NEET for NEET Exam | Download free PDF with solutions
Assertion & Reason Test: Biomolecules - Question 1
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Directions: This question consist of two statements, each printed as Assertion and Reason. While answering this question, you are required to choose any one of the following four responses.

Assertion : D(+)– Glucose is dextrorotatory in nature.
Reason : ‘D’ represents its dextrorotatory nature.

Detailed Solution for Assertion & Reason Test: Biomolecules - Question 1

Glucose is correctly named as D (+)−.  ′ D ′  before the name of glucose represents the configuration whereas′ (+) ′  represents the dextrorotatory nature of the molecule. The letter  ′ D ′ or  ′ L ′  before the name of any compound indicates the relative configuration of a particular stereoisomer.

Assertion & Reason Test: Biomolecules - Question 2
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Directions: In this question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A):  Deoxyribose, C5H10O4 is not a carbohydrate.
Reason (R): Carbohydrates are optically active polyhydroxy aldehyde or polyhydroxy ketone or substances which give aldehyde or ketone on hydrolysis.

Detailed Solution for Assertion & Reason Test: Biomolecules - Question 2
- Deoxyribose (C5H10O4) is indeed a carbohydrate; it is a type of sugar found in DNA.
- Carbohydrates are typically defined as optically active compounds that can form aldehydes or ketones.
- The assertion that deoxyribose is not a carbohydrate is false.
- The reason about carbohydrates being polyhydroxy aldehydes or ketones is true but does not explain why deoxyribose is not a carbohydrate.
- Therefore, the correct choice is that both statements are false and true respectively.
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Assertion & Reason Test: Biomolecules - Question 3
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Directions: This question consist of two statements, each printed as Assertion and Reason. While answering this question, you are required to choose any one of the following four responses.

Assertion  β-glycosidic linkage is present in maltose

Reason : Maltose is composed of two glucose units in which C–1 of one glucose unit is linked to C–4 of another glucose unit.

Detailed Solution for Assertion & Reason Test: Biomolecules - Question 3

Maltose is composed of two α−D− glucose units in which C−1 of one glucose (I) is linked to C−4 of another glucose unit (II).

Assertion & Reason Test: Biomolecules - Question 4
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Directions: In this question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): The two strands of DNA are complementary to each other.
Reason (R): The hydrogen bonds are formed between specific pairs of bases.
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 4

The two strands of DNA are complementary to each other and hydrogen bonds are formed between specific pairs of bases.

Assertion & Reason Test: Biomolecules - Question 5
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Directions: This question consist of two statements, each printed as Assertion and Reason. While answering this question, you are required to choose any one of the following four responses.

Assertion : Vitamin D cannot be stored in our body
Reason : Vitamin D is fat soluble vitamin and is excreted from the body in urine
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 5

Vitamin D is a fat soluble vitamin and can be stored in the body since it is not excreted out of the body.

Assertion & Reason Test: Biomolecules - Question 6
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Directions: In this question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Glycine must be taken through diet.
Reason (R): It is non-essential amino acid.
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 6

Glycine must not be taken through diet because it can be synthesized in our body and a non-essential amino acid.

Assertion & Reason Test: Biomolecules - Question 7
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Directions: This question consist of two statements, each printed as Assertion and Reason. While answering this question, you are required to choose any one of the following four responses.

Assertion : Sucrose is called an invert sugar.
Reason : On hydrolysis, sucrose bring the change in the sign of rotation from dextro (+) to laevo(–).
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 7

The hydrolysis of sucrose brings about a change in the sign of rotation from dextro (+) to laevo (–) and the product is named as invert sugar.

Assertion & Reason Test: Biomolecules - Question 8
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Directions: In this question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A):  Glucose reacts with hydroxylamine to form an oxime and also adds a molecule of hydrogen cyanide to give cyanohydrin.
Reason (R): The carbonyl group is present in the openchain structure of glucose.
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 8

Glucose reacts with hydroxylamine to form an oxime and also adds a molecule of hydrogen cyanide to give cyanohydrin which confirms the presence of the carbonyl group in the open chain structure of glucose.

Assertion & Reason Test: Biomolecules - Question 9
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Directions: This question consist of two statements, each printed as Assertion and Reason. While answering this question, you are required to choose any one of the following four responses.

Assertion : At isoelectric point, the amino group does not migrate under the influence of electric field.
Reason : At isoelectric point, amino acid exists as a zwitterion.
Assertion & Reason Test: Biomolecules - Question 10
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Directions: In this question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): All naturally occurring α amino acids except glycine are optically active.
Reason (R): Most naturally occurring α amino acids have L-configuration.
Detailed Solution for Assertion & Reason Test: Biomolecules - Question 10

Most of the naturally occurring amino acids have L−configuration. All naturally occurring a−amino acids are optically active except glycine.

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