Chemistry/Biochemistry/Organic Chemistry

Question 1

What is the difference between carbon-12 and carbon-14? (Hint: 12 and 14 are mass #)

Answer 1

.The number of neutrons in the nucleus.

Question 2

How many water molecules are released when 4 amino acids form three peptide bonds?

Answer 2

3 water molecules

Question 3

When atoms share electrons unequally…

Answer 3

a polar covalent bond is formed.

Question 4

Which functional group accepts positively-charged hydrogen ions from water because it is basic?

Answer 4

Amino Group

Question 5

Identify the macromolecule in the image below.

Answer 5

Protein

Question 6

What is the function of fats for living organisms?

Answer 6

long term energy storage

Question 7

The types of bonds that form between slightly positive atoms on one molecule and the slightly negative atoms on a different molecule are

Answer 7

hydrogen bond

Question 8

Which level of protein structure occurs between two or more different polypeptides?

Answer 8

Quantenary Structure

Question 9

How are the subunits of proteins linked together?

Answer 9

peptide bonds

Question 10

If a hydroxyl functional group is present, which of the following is likely to be true?

Answer 10

The compound will dissolve in water

Question 11

What is the monomer of proteins?

Answer 11

Amino Acids

Question 12

Which 4 elements make up most of all living matter?

Answer 12

Carbon, Hydrogen, Oxygen

Question 13

Question 8

Answer 13

Fatty Acid

Question 14

Which statement about polymers is not true?

Answer 14

polymers consist of more than one type of monomer

Question 15

The three parts of a nucleotide are a phosphate, a 5-carbon sugar, and

Answer 15

phosphate

Question 16

Which of the macromolecules contain nitrogen?

Answer 16

nucleic acids and proteins

Question 17

The image depicts which level of structure in proteins?

Answer 17

Secondary

Question 18

The image below shows a polymer of glucose molecules. What type of macromolecule is this?

Answer 18

carbohydrates

Question 19

Which type of lipid forms the primary structure of the cell membrane?

Answer 19

phsopholipid

Question 20

When water freezes the molecules form a matrix by forming hydrogen bonds and

Answer 20

Becomes less dense it water