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Assertion & Reason Test: Biomolecules - NEET MCQ


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10 Questions MCQ Test Topic-wise MCQ Tests for NEET - Assertion & Reason Test: Biomolecules

Assertion & Reason Test: Biomolecules for NEET 2024 is part of Topic-wise MCQ 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 2024 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 Topic-wise MCQ Tests for NEET for NEET & Assertion & Reason Test: Biomolecules solutions in Hindi for Topic-wise MCQ 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 Topic-wise MCQ 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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