Functional Groups

Part A

Which one of these is an amino group?

	B
	D
	E
	A
	C

Correct

This is an amino group, NH2.

Part B

Which of these is a phosphate group?

	F
	A
	C
	E
	B

Correct

Of the choices, this is the only one that contains phosphorus.

Part C

Which of these is a hydroxyl group?

	C
	A
	D
	F
	E

Correct

This is a hydroxyl group.

Part D

Which of these is a carboxyl group?

	B
	C
	A
	E
	F

Correct

This is a carboxyl group.

Part E

Which of these functional groups is characteristic of alcohol?

	A
	E
	D
	B
	C

Correct

Hydroxyl groups are characteristic of alcohol.

Part F

Which of the functional groups behaves as a base?

	C
	E
	B
	A
	F

Correct

The electronegativity of nitrogen means that amino groups tend to pick up hydrogen ions.

Part G

Which of these groups is characteristic of thiols?

	B
	D
	E
	F
	A

Correct

Thiols are characterized by the presence of a sulfhydryl group.

Part H

Which of these groups plays a major role in energy transfer?

	D
	E
	C
	B
	A

Correct

Phosphate groups are a component of ATP.

Part I

Which of these is a carbonyl group?

	F
	A
	B
	C
	E

Correct

This is a carbonyl group.

Part J

Which of these functional groups is characteristic of a ketone?

	B
	D
	E
	C
	A

Correct

A carbonyl group in the middle of a carbon skeleton characterizes ketones.

Part K

Which of functional groups listed below behaves as an acid?

	A
	D
	E
	C
	F

Correct

By donating hydrogen ions, carboxyl groups act as an acid.