Chemistry of Biology

Question 1

Hydrogen Bonds

Answer 1

A weak chemical bond that temporarily holds separate molecules together. Used with DNA

Question 2

Endothermic reactions

Answer 2

They require energy to happen.

Question 3

Exothermic reactions

Answer 3

Reactions that release energy

Question 4

All carbohydrates are made of what kind of sugar?

Answer 4

Monosaccharide.

Question 5

“Poly” means what?

Answer 5

Many.

Question 6

What is “Glycogen?”

Answer 6

It is a Polysaccharide composed of many bonded glucose units. (found in muscle and liver tissue.)

Question 7

What is “Lipids?”

Answer 7

It is a organic compound composed of carbon, hydrogen, and oxygen.

Question 8

Proteins are also known as…

Answer 8

Polypeptides.

Question 9

What are “Enzymes?”

Answer 9

They are Special proteins that act as catalysts for reactions.

Question 10

Nitrogen bases in DNA include…?

Answer 10

Adenine, Cytosine, Guanine, and Thymine. (A, C, G, and T.)

Question 11

“C” stands for:

Answer 11

Cytosine

Question 12

“A” stands for:

Answer 12

Adenine

Question 13

“G” stands for:

Answer 13

Guanine

Question 14

“T” stands for:

Answer 14

Thymine

Question 15

DNA from as ___ structure?

Answer 15

It forms a Double-Helic structure

Question 16

In RNA, thymine is replaced by the…?

Answer 16

“U” Uracil.

Question 17

What does “Diffusion” mean?

Answer 17

The random motion of molecules from an area of high concentration to an area of low concentration.

Question 18

What does “Semipermeable membrane” mean?

Answer 18

A membrane that allows some molecules to pass through but does not allow other molecules to pass through.

Question 19

What does “Osmosis” mean?

Answer 19

The tendency of a solvent to travel across semipermeable membrane into areas of higher solute concentration.

Question 20

What does “Biosynthesis” mean?

Answer 20

The process by which living organisms produce larger molecules from smaller ones.

Question 21

What is a “Isomers?”

Answer 21

Two different molecules that have the same chemical formula.

Question 22

What is a “Hydrolysis?”

Answer 22

Breaking down complex molecules by the chemical addition of water.

Question 23

What is a “Peptide Bond?”

Answer 23

A bond that links amino acids together in a protein.