IB Biology 2.4 Proteins

Which one shows a secondary structure of protein?

• 
• 
• 
• 

How many polypeptides does hemoglobin have?

• 3

• 10

• 8

• 4

Proteins including enzymes can be used for removing stains, pregnancy tests, and insulin for treating diabetes.

• False

• True

What is the correct definition for a polypeptide?

• Chains of amino acids that are made by linking together amino acids by condensation reactions.

• Two amino acids are linked by a condensation reaction between the amine group of one amino acid and the carboxyl group of the other.

• Four amino acids, linked by three peptide bonds.

Tags

NGSS.HS-LS1-6

What amino acid is this?

• Alanine

• Glycine

• Glutamic acid

• Serine

Tags

NGSS.HS-LS1-6

Which one shows a primary structure of protein?

• 
• 
• 
• 

Are ALL of these functions carried out by proteins? Cytoskeletons, Blood clotting, Cell adhesion, Immunity

• Yes

• No

What is collagen’s function?

• Enzymes in secretions such as nasal mucus and tears; it kills some bacteria by digesting the peptidoglycan in their cell walls.

• Membrane protein used to make connections between structures inside and outside a cell.

• Structural protein in tendons, ligaments, skin and blood vessel walls; it provides high tensile strength, with limited stretching.

• Transport protein in red blood cells; it binds oxygen in the lungs and releases it in tissues with a reduced oxygen concentration.

How many bases of the gene are needed in order to code for each amino acid in the polypeptide?

• 4

• 5

• 9

• 3

Tags

NGSS.HS-LS1-1

Amino acids that are linked together by ribosomes to make polypeptides all have some identical structural features.

• False

• True

Tags

NGSS.HS-LS1-6