Unit 1 Exam

Question 1

What is the Primary Structure of a protein?

Answer 1

Has a sequence of Amin acids in the polypeptide chain

Question 2

secondary structure of a protein

Answer 2

Alpha and beta pleated sheets; held by 4 bonds; coil/fold into local patterns

Question 3

Tertiary structure

Answer 3

Entire polypeptide folding on itself; hydrogen bonds, ionic bonds, disulfide bridges

Question 4

Quaternary structure

Answer 4

More than one polypeptide chain; hydrogen bonds, ionic bonds

Question 5

Electronegativity

Answer 5

How much an atoms “likes” electrons

Question 6

Unsaturated fats

Answer 6

Cold environment; more fluid in cold temperatures because of the cell membranes

Question 7

Saturated fat

Answer 7

Solid; less fluid; warmer temperatures

Question 8

Carboxyl group

Answer 8

COOH

Question 9

Amino Group

Answer 9

NH2

Question 10

Hydroxyl Group

Answer 10

OH

Question 11

Methyl

Answer 11

CH3

Question 12

Sulfhydryl group

Answer 12

SH

Question 13

Carbonyl Group

Answer 13

CO

Question 14

Are hydrocarbons polar?

Answer 14

No, they are not

Question 15

Function of carbs

Answer 15

Helps store energy

Question 16

Functions of a fat

Answer 16

Makes membranes

Question 17

Functions of a protein

Answer 17

Transports proteins in cell membranes

Question 18

Function of nucleic acids

Answer 18

Transfers hereditary information

Question 19

What does essential nutrients mean

Answer 19

You have to consume

Question 20

Cellulose

Answer 20

Provides structures in plants

Question 21

Glycogen

Answer 21

Stores glucose in animals and humans

Question 22

Starch

Answer 22

Stores glucose in plants

Question 23

How many bonds can carbon atoms form

Answer 23

4 covalent bonds

Question 24

Hydrolysis

Answer 24

Adding water

Question 25

Buffers

Answer 25

Release or absorb hydrogen ions

Question 26

What do tums do?

Answer 26

They are bases that neutralize acidity/hydrogen ions

Question 27

Going up on the pH scale decreases what?

Answer 27

Hydrogen ions

Question 28

How do you increase hydrogen ions

Answer 28

Going down on the pH scale

Question 29

Surface tension is caused by what?

Answer 29

Cohesion

Question 30

Why does alcohol evaporate before water

Answer 30

Because of specific heat

Question 31

Polar covalent bonds

Answer 31

Do not share equally

Question 32

Covalent bonds

Answer 32

Share electrons

Question 33

Metals bond with non-metals how?

Answer 33

Ionic bonds; transfer of electrons

Question 34

How do you find potential binding?

Answer 34

Subtracting electrons by 8

Question 35

carbon, hydrogen, oxygen, and nitrogen are what?

Answer 35

The most common in living thing

Question 36

Covalent bonds share electrons how?

Answer 36

Shares electrons equally

Question 37

Ionic bonds

Answer 37

Full charges

Question 38

Polar bonds

Answer 38

Partial sharing

Question 39

Hydrogen bonds

Answer 39

No charges/partial