Unit 1 Biochemistry and Enzymes

Question 1

Cell membanes contain hydrophobic outsides to separate the watery environment from the inside of the cell. So then,

Accepted Answer

cell membranes are mostly made of lipids

Question 2

Which of the following is true of enzymes?

Accepted Answer

They are sensitive to pH., They are sensitive to concentrations of enzymes., They are sensitive to temperature., They are sensitive to substrates.

Question 3

Catalase performance was tested at various temperatures. What is the optimal temperature for catalase?

Accepted Answer

45C

Question 4

This is an image of a/an

Accepted Answer

carbohydrate

Question 5

The small molecules that make up a polymer are called

Accepted Answer

Monomers

Question 6

This is an image of a/an

Accepted Answer

Protein

Question 7

All organic substances contain

Accepted Answer

carbon

Question 8

What type of bond holds amino acids together?

Accepted Answer

peptide bonds

Question 9

Which of the numbers in the image below represents the substrate?

Accepted Answer

2

Question 10

How prepared do you feel for this test?

Accepted Answer

I know like 80% of this, Yeah, I have a LOT of studying to do., Imma make an A!, I know maybe half?

Question 11

What does 4 represent in the graph?

Accepted Answer

the energy of the products

Question 12

How do you know where a peptide bond is?

Accepted Answer

between the amino acids

Question 13

The macromolecule shown is a

Accepted Answer

Lipid

Question 14

What does denaturing mean?

Accepted Answer

To change shape

Question 15

Enzymes are said to be "specific" because...

Accepted Answer

they only have one substrate they can bind to

Question 16

Which of the following has the correct ending?

Accepted Answer

-ose for sugars

Question 17

Which of the following is correctly matched?

Accepted Answer

carbohydrate: monosaccharide

Question 18

Lipids are made of all of the following except...

Accepted Answer

Nitrogen

Question 19

What does 2 represent in the graph?

Accepted Answer

the activation energy of the reaction

Question 20

Which type of macromolecule includes enzymes?

Accepted Answer

Proteins

Question 21

The water molecules shown are stuck together with

Accepted Answer

Hydrogen Bonds

Question 22

Which of the following is a carbohydrate example?

Accepted Answer

glucose, starch

Question 23

When the temperature or pH gets too high, what happens to an enzyme?

Accepted Answer

It becomes denatured.

Question 24

The thing an enzyme binds to is called the...

Accepted Answer

substrate

Question 25

Two monomers are put together to make a polymer with water as a product. This is called...

Accepted Answer

polymerization

Question 26

The monomer shown in the image is

Accepted Answer

An amino acid

Question 27

Which of the following is not true about DNA?

Accepted Answer

It is a protein

Question 28

Which of the numbers in the image below represents the product?

Accepted Answer

4

Question 29

Neutral on the pH scale is

Accepted Answer

7

Question 30

What is the monomer that makes up nucleic acids?

Accepted Answer

Nucleotides

Question 31

Oils and waxes are examples of

Accepted Answer

lipids

Question 32

Which of the following molecules is hydrophobic?

Accepted Answer

lipid

Question 33

The molecule being shown in the image is a

Accepted Answer

Monomer

Question 34

Which of the numbers in the image below represents the enzyme-substrate complex?

Accepted Answer

3

Question 35

Which of the following is true of this image?

Accepted Answer

It is a macromolecule

Question 36

The most common elements in living organisms can be remembered with the acronym:

Accepted Answer

chnops

Question 37

Enzymes are examples of...

Accepted Answer

catalysts

Question 38

The macromolecule shown in the image is made of simple sugars, so it is a

Accepted Answer

Starch

Question 39

Which macromolecule is used for short term / fast energy?

Accepted Answer

Carbohydrate

Question 40

Which of the numbers in the image below represents the enzyme?

Accepted Answer

1

Question 41

Lowering the pH means the solution becomes more

Accepted Answer

Acidic

Question 42

What is the difference between the saturated and unsaturated fatty acids shown?

Accepted Answer

Unsaturated has a double bond

Question 43

Something that lowers the activation energy so a reaction can happen faster is called a/an...

Accepted Answer

catalyst

Question 44

What does the following graph show?

Accepted Answer

Activation energy with and without an enzyme

Question 45

Where do substrates bind to the enzyme?

Accepted Answer

At the active site

Unit 1 Biochemistry and Enzymes

Questions 45

Unit 1 Biochemistry and Enzymes

Questions 45