Enzymes

Question 1

a biomolecule group of mostly of

PROTEINS

Answer 1

enzymes

Question 2

A substance that increases the rate of a chemical

reaction without being itself changed in the process.

Answer 2

catalyst

Question 3

Once an enzyme binds to a substrate and catalyzes

the reaction, the enzyme is?

Answer 3

released

Question 4

it helps to speed up chemical reactions

Answer 4

enzymes

Question 5

Enzymes won’t change after the reaction takes place, it is

recycled! TRUE or FALSE?

Answer 5

TRUE

Question 6

Enzymes are very specific and will only catalyze one

specific chemical reaction? true or false

Answer 6

true

Question 7

Enzymes are mostly?

Answer 7

globular proteins

Question 8

Enzymes react at mild reaction conditions at ?

Answer 8

37C

Question 9

The names of most enzymes end in?

Answer 9

ase

Question 10

Enzymes Lowers Reaction’s Activation Energy. true or false?

Answer 10

true

Question 11

A three-dimensional cavity of the enzyme with specific chemical properties to accommodate the
substrate where the reaction takes place.

Answer 11

active site

Question 12

If we keep the concentration of substrate constant and increase the concentration of enzyme, the rate?

Answer 12

increases linearly

Question 13

there is great competition

for the active sites and the rate of reaction is LOW

Answer 13

low enzyme concentration

Question 14

there are more active

sites and the reaction can proceed at a FASTER rate

Answer 14

high enzyme concentration

Question 15

If we keep the concentration of enzyme constant and
increase the concentration of substrate, we get an
entirely different type of curve

Answer 15

saturation curve

Question 16

substrate molecules are bound to

all available active sites of the enzymes

Answer 16

saturation point

Question 17

Too high temperature above the optimum temperature

cause the enzymes to be?

Answer 17

denatured

Question 18

As temperature rises, enzyme activity also speeds up? True or False

Answer 18

True

Question 19

All enzymes don’t have a certain narrow range of pH where they perform best. True or False?

Answer 19

False

Question 20

Most active between?

Answer 20

4.5-8

Question 21

Extremes of pH can affect the enzyme by denaturing it or affecting the charge of critical amino acids in its active
site? true or false

Answer 21

true

Question 22

It is an enzyme that catalyzes the hydrolysis of starch?

Answer 22

amylase

Question 23

Largest salivary gland found inside the cheeks

Answer 23

Parotid gland

Question 24

This enzyme is found in human saliva and has a shape that can recognize the polysaccharide
amylose (starch)

Answer 24

salivary amylase

Question 25

A polysaccharide composed of glucose subunits.

Answer 25

starch

Question 26

Iodine Test = Blue-black

Answer 26

presence of starch

Question 27

Iodine Test = Yellowish brown

Answer 27

presence of amylase

Question 28

an enzyme found in most cells and serves to break down peroxides

Answer 28

catalase

Question 29

Enzyme that catalyzes the reaction which hydrogen peroxide is decomposed to water and oxygen

Answer 29

catalase

Question 30

a waste product of cellular activity. It is poisonous to cells.

Answer 30

hydrogen peroxide

Question 31

if you ever applied hydrogen peroxide to an open cut. The white foam produced is due to the action of the enzyme on the hydrogen peroxide releasing oxygen; the reaction is faster than without the catalyst. True or False.

Answer 31

True

Question 32

Nucleic acids also known as?

Answer 32

polynucleotides

Question 33

a macromolecule composed of chains of | monomeric nucleotides.

Answer 33

nucleic acid

Question 34

monomers of nucleic acid

Answer 34

nucleotides

Question 35

3 parts of nucleotide?

Answer 35

nitrogenous base, sugar and phosphate

Question 36

2 types of nucleic acid BASES?

Answer 36

pyrimidines and purines

Question 37

3 types of pyrimidine bases?

Answer 37

cytosine, thymine, uracil

Question 38

2 common purines bases?

Answer 38

adenine and guanine

Question 39

sugar component of RNA?

Answer 39

D-ribose

Question 40

sugar component of DNA?

Answer 40

2-deoxy-d-ribose

Question 41

The third component of nucleic acids is?

Answer 41

phosphate

Question 42

When nucleoside bond with a phosphate ester the | result compound is a?

Answer 42

nucleotide

Question 43

does the backbone in DNA consists of alternating deoxyribose(Sugar) and phosphate groups? True or False?

Answer 43

True

Question 44

2 most common types of nucleic acids

Answer 44

DNA and RNA

Question 45

one of the major biomolecules in living cells have no common structure unlike proteins, carbohydrates, and nucleic acids

Answer 45

Lipids