Biology · Chemistry

Biomolecules and Enzymes

1,432 Questions

This topic focuses on biomolecules, specifically proteins, enzymes, and amino acids. It includes questions on enzyme structures, protein folding, and catalysis. These concepts are crucial for medical and biology competitive exams.

Enzyme catalysisProtein structuresAmino acid synthesisPolypeptide chainsBiomolecule properties

Biomolecules and Enzymes Questions

Multiple choice

What is made up of amino acids?

  1. Protein

  2. Carbohydrates

  3. Feed

  4. Rations
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Proteins are complex organic macromolecules made up of chains of amino acids, which serve as the building blocks for muscle and tissue. Carbohydrates are made of simple sugars, while feed and rations are mixtures of various nutrients.

Multiple choice

Describe elements of a Pig ration that would be different from other rations?

  1. Protein

  2. Carbohydrates

  3. Lysine and Methionine

  4. Calcium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pigs are monogastric (single-stomached) animals, meaning they cannot synthesize certain essential amino acids like ruminants can. Consequently, their rations must be specifically supplemented with essential amino acids such as lysine and methionine to support proper growth and development.

Multiple choice

Examples of amino acids include:

  1. Lysine , Methionine, Valine

  2. Iodine, Calcium, Magnesium

  3. Vaseline, Methadone, Lyceum

  4. Vinegar, Wine, Leon juice
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lysine, methionine, and valine are all examples of amino acids, which are the building blocks of proteins. The other options list minerals, non-food substances, or miscellaneous liquids.

Multiple choice

What are non-essential amino acids ?

  1. They are non-protein based acids

  2. They are synthetic acids

  3. They cannot be manufactured from other amino acids

  4. They can be manufactured in the body from other amino acids
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-essential amino acids are those that an animal's body can synthesize on its own from other compounds. Because the body can manufacture them, they do not need to be directly supplied in the diet.

Multiple choice

What are essential amino acids?

  1. They can be manufactured in the mongastric animals body

  2. They cannot be manufactured in the mongastric animals body

  3. They are acids produced by the Liver

  4. They are a result of eating too much protein
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Essential amino acids cannot be synthesized by monogastric animals in sufficient quantities to meet their metabolic needs. Therefore, these amino acids must be provided directly in their feed.

Multiple choice

Proteins are made up of which elements?

  1. CHO

  2. CHONP

  3. CHON

  4. CHI
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Proteins are complex molecules made of amino acids, which contain carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).

Multiple choice

Enzymes are an example of a 

  1. Nucleic Acid

  2. Carbohydrate

  3. Protein

  4. Lipid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enzymes are specialized proteins that catalyze chemical reactions in living organisms. They are folded into specific 3D shapes to perform their functions.

Multiple choice

Amides contain more nitrogen than amino acids

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Amides (like asparagine and glutamine) have a higher nitrogen to carbon ratio than amino acids, making them efficient forms for nitrogen storage and transport.

Multiple choice

Asparagine & Glutamine are formed from

  1. Aspartic acid

  2. Glutamic acid

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Asparagine is formed from aspartic acid and glutamine is formed from glutamic acid by the addition of another amino group.

Multiple choice

The 2 amides found in plants are

  1. Asparagine & Glutamine

  2. Glutamine and Glycine

  3. Glycine and Histidine

  4. All
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Asparagine and glutamine are the two primary amides used by plants for nitrogen transport and storage.

Multiple choice

Phosphorous is a constituent of

  1. Cell membrane

  2. Certain proteins

  3. All nucleic acid and nucleotides

  4. All
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phosphorus is a fundamental component of cell membranes (phospholipids), nucleic acids (DNA/RNA), and nucleotides (ATP, NADP).