Biology · Chemistry

Biomolecules and Enzymes

1,501 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
  1. cross-link proteins and nucleic acids

  2. break apart cell membranes

  3. are non-toxic

  4. degerm

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aldehydes, such as glutaraldehyde and formaldehyde, act as disinfectants by cross-linking proteins and nucleic acids, which inactivates them.

Multiple choice
  1. catalase

  2. lysozyme

  3. hydrogenase

  4. RNase

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Catalase is the enzyme that breaks down hydrogen peroxide into water and oxygen, protecting the cell from oxidative damage.

Multiple choice
  1. lipid

  2. globular

  3. nucleic acid

  4. bond

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Albumin is a globular protein, meaning it is folded into a compact, spherical shape. Globular proteins are typically water-soluble and perform various functional roles.

Multiple choice
  1. lipids

  2. carbohydrates

  3. proteins

  4. nucleic acids

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enzymes are specialized proteins that catalyze biological reactions. They are composed of amino acid chains folded into specific shapes.

Multiple choice
  1. Pepsin

  2. Trypsin

  3. Chymotrypsin

  4. Chymotrypsinogen

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A zymogen is an inactive precursor of an enzyme. Chymotrypsinogen is the inactive form that is converted into the active enzyme chymotrypsin.