AP Biological Molecules 2015

Question 1

Which is a carboxyl group?

Accepted Answer

-COOH

Question 2

Nucleic acids are chains of 5-carbon sugars linked by ____ bonds.

Accepted Answer

phosphodiester

Question 3

What type of macromolecule carries out catalysis in biological systems?

Accepted Answer

proteins called enzymes

Question 4

Which of the following nitrogenous bases is found in DNA but is not found in RNA?

Accepted Answer

thymine

Question 5

Why is Carbon the most common element in organic chemistry?

Accepted Answer

It can form four bonds, It is able to bond with many elements

Question 6

What Functional group(s) are in all amino acids?

Accepted Answer

Carboxyl and Amino

Question 7

In the formation of a macromolecule, what type of bond would join two amino acid subunits?

Accepted Answer

peptide bond

Question 8

Which functional group is nonpolar?

Accepted Answer

Methyl

Question 9

Which element is always associated with organic chemistry?

Accepted Answer

Carbon

Question 10

What is the difference between DNA and RNA sugar?

Accepted Answer

DNA has one less oxygen

Question 11

What happens during a hydrolysis reaction?

Accepted Answer

the bond between two subunits of a macromolecule is broken

Question 12

In a folded protein, the nonpolar (hydrophobic) amino acids tend to be:

Accepted Answer

tucked away inside the protein

Question 13

The sequence of amino acids in a polypeptide is called the ___ structure.

Accepted Answer

primary

Question 14

Which is an amino group?

Accepted Answer

-NH2

Question 15

There are several levels of protein structure, the most complex of which is

Accepted Answer

Quaternary

Question 16

Which parts of amino acids are involved in peptide bonds?

Accepted Answer

amino group on amino acid and carboxyl group on the other

Question 17

Which is a hydroxyl group?

Accepted Answer

-OH

Question 18

What are the six most important chemical elements of life?

Accepted Answer

carbon, nitrogen, oxygen, hydrogen, phosphate, sulfur

Question 19

In a DNA molecule, what bonds hold together nitrogenous bases from the two polymer chains?

Accepted Answer

hydrogen

Question 20

Triacylglycerol contains fatty acids and

Accepted Answer

glycerol

Question 21

The globular shape of the protein is called the _____ structure.

Accepted Answer

Quaternary, Tertiary

Question 22

Which is a methyl group?

Accepted Answer

-CH3

Question 23

What are the properties of hydrocarbons?

Accepted Answer

Hydrophobic, nonpolar, good source of stored energy

Question 24

All of the following are true of protein denaturation except that it

Accepted Answer

is always irreversible

AP Biological Molecules 2015

Questions 24

AP Biological Molecules 2015

Questions 24