1.2 Kahoot - exam

Question 1

Which functional group is responsible for the high solubility of carbohydrates in water

Answer 1

Hydroxyl group

Question 2

What is the reaction that forms a disaccharide

Answer 2

Dehydration synthesis

Question 3

Why are chitin and cellulose hydrophobic

Answer 3

They form many internal hydrogen bonds

Question 4

What element make lipids

Answer 4

C, H, O

Question 5

What are functions of lipids

Answer 5

• long term energy storage
• thermal insulation
• hormones

Question 6

How are lipids stored in adipose tissue?

Answer 6

• as glycogen
• as fatty acid
• as triglycerides

Question 7

Which functional group is found on fatty acid

Answer 7

Carboxyl group

Question 8

What is a trans fat on a molecular level

Answer 8

Trans isomers of an unsaturated fat

Question 9

Trans fats help … the risk of heart disease and diabetes

Answer 9

Increase

Question 10

Phospholipid structure

Answer 10

Polar head and 2 non-polar fatty acid tails

Question 11

Cell membrane is

Answer 11

Semi permeable

Question 12

What types of molecule can easily cross the cell membrane

Answer 12

Small, non-polar molecules

Question 13

Steroid structure

Answer 13

3 six-carbon rings w/ one five-carbon ring

Question 14

Where does most of our body’s cholesterol come from

Answer 14

Produced in the liver

Question 15

Function of cholesterol in the cell membrane

Answer 15

Flexibility and fluidity

Question 16

LDL stand for

Answer 16

Low-density lipoprotein

Question 17

Bad cholesterol

Answer 17

LDL

Question 18

HDL function

Answer 18

Remove excess LDL and take to the liver for removal

Question 19

Anabolic steroid function

Answer 19

Increase muscle mass

Question 20

Side effect of anabolic steroids in males

Answer 20

• breast development
• kidney damage
• increased aggression
• hair loss

Question 21

Side effects of anabolic steroids in women

Answer 21

• decreased breast size
• deepened voice
• Altered menstrual function

Question 22

Monomer of all proteins

Answer 22

Amino acids

Question 23

Main elements found in proteins

Answer 23

C, H, O, N

Question 24

R structure in amino acid

Answer 24

A side chain/functional group

Question 25

How many amino acids do we use in our body

Answer 25

20

Question 26

What does it mean if an amino acid is essential

Answer 26

Amino acids aren't produced by the body naturally and need to be ingested

Question 27

Bond between 2 amino acids

Answer 27

Peptide bond

Question 28

What is the secondary structure in protein formation

Answer 28

The repeating pattern of a helix and a B pleated sheet

Question 29

What happens in the secondary structure that causes the helix and pleating

Answer 29

Regions are stabilized by hydrogen bonds

Question 30

Description of the primary structure of a protein

Answer 30

Linear chain of amino acids

Question 31

What happens to form the tertiary structure

Answer 31

3-D shape stabilized by interactions between side chains

Question 32

How many polypeptide chains are involved in the quaternady structure of a protein

Answer 32

2+

Question 33

All proteins must be in their quaternary structure to be functional

Answer 33

False

Question 34

Denaturation

Answer 34

Structural change of a protein that results in loss of function

Question 35

Causes of denaturation

Answer 35

- change pH - change temp - change in NaCl concentration

Question 36

Protein molecules change shape when denaturing because

Answer 36

Intermolecular bonds are broken

Question 37

2 types of nucleic acids

Answer 37

DNA, RNA

Question 38

DNA function

Answer 38

Store and transmit genetic info

Question 39

RNA function

Answer 39

Protein synthesis

Question 40

Monomers of nucleotides are called nucleic

Answer 40

False

Question 41

Backbone of a nucleic acid molecule

Answer 41

Phosphate and sugar

Question 42

Structural differences between DNA and RNA

Answer 42

- DNA has deoxyribose, RNA has ribose - DNA has thymine, RNA has uracil - DNA is double stranded, RNA single stranded

Question 43

In DNA cytosine pairs with

Answer 43

Guanine

Question 44

In RNA, adenine bonds

Answer 44

Uracil

Question 45

Structure of a nucleotide

Answer 45

5 C sugar attached to a phosphate group and nitrogen base