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Practice Questions

The most appropriate explanation for classifying glucose and fructose as structural isomers is that they possess

A. Different molecular formulas but the same structural arrangement
B. The same molecular formula but different functional groups ✓
C. The same molecular formula and the same functional groups
D. Different molecular formulas and different functional groups

Glucose and fructose both have the molecular formula C6H12O6. Glucose is an aldehyde sugar (aldose), while fructose is a ketone sugar (ketose). This difference in the carbonyl functional group makes them structural isomers, not identical molecules.

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nmdcat.online BIO NMDCAT
Jun 27, 2026

Regarding the elemental composition of carbohydrates, the general empirical formula is represented as

A. (C2H4O2)n
B. (CH2O)n ✓
C. (C3H6O3)n
D. (CHO)n

The term "carbohydrate" literally means hydrated carbon, reflecting the general ratio of one carbon to two hydrogens to one oxygen atom. Proteins contain nitrogen, and nucleic acids contain phosphorus, distinguishing them from this basic formula.

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nmdcat.online BIO NMDCAT
Jun 27, 2026

In living systems, the class of biological molecules that primarily serves as the immediate source of energy for cellular processes is

A. Proteins
B. Carbohydrates ✓
C. Lipids
D. Nucleic acids

Carbohydrates, particularly monosaccharides like glucose, are the primary and immediate energy source broken down during cellular respiration. Proteins are mainly structural and catalytic, lipids are for long-term energy storage, and nucleic acids store genetic information.

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nmdcat.online BIO NMDCAT
Jun 27, 2026

Choose the sentence with correct structure

A. I don't know what is he doing.
B. I don't know what he is doing. ✓
C. I don't know what doing he is.
D. I don't know what he doing is.
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nmdcat.online English NMDCAT
Jun 25, 2026

Find the correctly structured sentence

A. Not only he is smart but also hardworking.
B. Not only is he smart but also hardworking. ✓
C. Not only he smart is but also hardworking.
D. Not only smart he is but also hardworking.
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nmdcat.online English NMDCAT
Jun 25, 2026

Identify the correct sentence

A. To him, the book was important.
B. The book was important to him. ✓
C. Him, the book was important.
D. The book important was to him.
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nmdcat.online English NMDCAT
Jun 25, 2026

Which sentence has correct verb tense?

A. She will goes to the party tomorrow.
B. She will go to the party tomorrow. ✓
C. She going to the party tomorrow.
D. She goes to the party tomorrow.
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nmdcat.online English NMDCAT
Jun 25, 2026

Select the sentence with proper subject-verb agreement

A. Each of the players are ready.
B. Each of the players is ready. ✓
C. Each of the players were ready.
D. Each of the players be ready.
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nmdcat.online English NMDCAT
Jun 25, 2026

Choose the sentence with correct conjunction use

A. He is tired but he still works hard.
B. He is tired but, he still works hard.
C. He is tired, but he still works hard. ✓
D. He is tired he still works hard.
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nmdcat.online English NMDCAT
Jun 25, 2026

Find the correct sentence

A. Walking through the park, the flowers smelled sweet.
B. Walking through the park, I smelled the sweet flowers. ✓
C. Walking through the park, sweet smelled the flowers.
D. Walking through the park smelled sweet flowers.
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nmdcat.online English NMDCAT
Jun 25, 2026

Identify the correct sentence structure

A. Despite of the rain, the match continued.
B. Despite the rain, the match continued. ✓
C. Despite the rain the match, continued.
D. Despite rain the match continued.
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nmdcat.online English NMDCAT
Jun 25, 2026

Which sentence is grammatically correct?

A. It is raining since morning.
B. It has been raining since morning. ✓
C. It was raining since morning.
D. It is rain since morning.
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nmdcat.online English NMDCAT
Jun 25, 2026

Select the correct sentence

A. She had already ate dinner.
B. She had already eaten dinner. ✓
C. She already ate dinner.
D. She already eaten dinner.
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nmdcat.online English NMDCAT
Jun 25, 2026

Find the correct sentence

A. The man which called you is here.
B. The man who called you is here. ✓
C. The man whom called you is here.
D. The man whose called you is here.
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nmdcat.online English NMDCAT
Jun 25, 2026

Which sentence is properly constructed?

A. I want to quickly finish my work. ✓
B. I want quickly to finish my work.
C. I want to finish quickly my work.
D. I want finish to quickly my work.
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nmdcat.online English NMDCAT
Jun 25, 2026

Choose the sentence with correct word order

A. She beautifully sings.
B. She sings beautifully. ✓
C. Beautifully she sings.
D. Sings she beautifully.
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nmdcat.online English NMDCAT
Jun 25, 2026

Identify the grammatically correct sentence

A. The children plays outside.
B. The children play outside. ✓
C. The children playing outside.
D. The children is playing outside.
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nmdcat.online English NMDCAT
Jun 25, 2026

Which sentence is correct?

A. I have went to the store.
B. I have gone to the store. ✓
C. I gone to the store.
D. I went to the store.
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nmdcat.online English NMDCAT
Jun 25, 2026

Select the sentence with correct structure

A. The cake was eaten by him. ✓
B. The cake eaten was by him.
C. By him was eaten the cake.
D. Eaten was the cake by him.
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nmdcat.online English NMDCAT
Jun 25, 2026
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