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Lesson Worksheet: Structure of Proteins Biology

In this worksheet, we will practice describing the basic structure of a protein and identifying structural and regulatory proteins.

Q1:

Which of the following states two major groups that proteins can be categorized into?

  • APolypeptide and polysaccharide
  • BStructural and regulatory
  • CTransferase and hydrolase
  • DSteroidal and hormonal

Q2:

State whether the following are examples of structural or regulatory proteins.

Glucagon, a hormone secreted from the pancreas

  • ARegulatory
  • BStructural

Collagen, a fiber found in ligaments and skin

  • AStructural
  • BRegulatory

Actin, a filament found in muscle fibers

  • ARegulatory
  • BStructural

Q3:

A scientist is attempting to categorize some unnamed proteins.

Protein Y is found in the connective tissues that form between muscles and bones. Which group of proteins, structural or regulatory, is protein Y likely to belong to?

  • AStructural
  • BRegulatory

Q4:

Which of the following is an example of a regulatory protein?

  • ACollagen
  • BAdrenaline
  • CKeratin
  • DMyosin
  • EActin

Q5:

A scientist is attempting to categorize some unnamed proteins.

Protein X plays a key role in the immune response the human body has when infected by a pathogen. Which group of proteins, structural or regulatory, is protein X likely to belong to?

  • AStructural
  • BRegulatory

Q6:

Proteins are biological polymers. What monomers will join together to form a protein?

  • ASugars
  • BCarbohydrates
  • CAmino acids
  • DLipids
  • EFatty acids

Q7:

In the reaction that occurs to join amino acids and form a dipeptide, what molecule is removed?

  • ACarbon dioxide
  • BOxygen
  • CHydrogen
  • DAmmonia
  • EWater

Q8:

Which of the following tables correctly categorizes some examples of proteins found in the human body?

  • A
    TypeRegulatoryStructural
    ExamplesInsulin
    Actin
    Myosin
    Peptidase
    Collagen
    Keratin
  • B
    TypeRegulatoryStructural
    ExamplesInsulin
    Peptidase
    Collagen
    Keratin
    Actin
    Myosin
  • C
    TypeRegulatoryStructural
    ExamplesPeptidase
    Actin
    Myosin
    Insulin
    Collagen
    Keratin
  • D
    TypeRegulatoryStructural
    ExamplesCollagen
    Keratin
    Actin
    Myosin
    Insulin
    Peptidase

Q9:

There are 20 different amino acids in humans that share a similar basic structure.

Which group differs between all amino acids?

  • AThe amine group
  • BThe peptide group
  • CThe S group
  • DThe carboxyl group
  • EThe R group

Q10:

Which of the following correctly describes the difference between structural and regulatory proteins?

  • ARegulatory proteins inhibit the expression of certain genes in the body, and structural proteins are involved in cell signaling and communication.
  • BStructural proteins make up the building materials of the body, and regulatory proteins help control bodily processes and activities.
  • CRegulatory proteins make up the building materials of the body, and structural proteins help control bodily processes and activities.
  • DStructural proteins inhibit the expression of certain genes in the body, and regulatory proteins are involved in cell signaling and communication.

This lesson includes 17 additional questions for subscribers.

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