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B1.2 HL R-Groups

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Total cards: 8•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (8)

#1
Front (Question)

What determines the chemical properties of an amino acid?

Back (Answer)

Its R-group (side chain).

#2
Front (Question)

What are the four types of R-groups?

Back (Answer)

Non-polar (hydrophobic), polar (hydrophilic), positively charged (basic), negatively charged (acidic).

#3
Front (Question)

What do hydrophobic R-groups do in a soluble protein?

Back (Answer)

Fold inward away from water.

#4
Front (Question)

What do hydrophilic R-groups do in a soluble protein?

Back (Answer)

Face outward toward water.

#5
Front (Question)

What type of bond can cysteine form?

Back (Answer)

Disulfide bridge (S–S).

#6
Front (Question)

Which bonds shape the polypeptide chain?

Back (Answer)

Hydrogen bonds, ionic bonds, disulfide bridges, hydrophobic interactions.

#7
Front (Question)

Which bond type is strongest?

Back (Answer)

Disulfide bridge.

#8
Front (Question)

Keywords

Back (Answer)

R-group, hydrophobic, hydrophilic, basic, acidic, disulfide bond, protein folding, polarity.