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Worksheets

biochemistry

Total questions: 37

Worksheet time: 28mins

Name
Class
Date
1.

What is this enzymes optimal temperature?

a)

10*C

b)

40*C

c)

50*C

d)

70*C

2.

Which claim is best supported by this graph?

a)

This enzyme has an optimal pH of 13

b)

The enzyme prefers more of an acidic environment

c)

The optimum pH for this enzyme is 4 and denatures at a pH of 9

d)

The optimum pH for this enzyme is 9 but it denatures at a pH of 4

3.

The structure labeled E represents-

a)

Products

b)

Enzyme

c)

Substrate

d)

Reactants

4.

Which of the following lines shows the presence of an enzyme?

a)

Black

b)

Red

5.

Which pair of answers correctly matches the monomer and the polymer?

a)

Glucose- Protein

b)

Amino Acid- Nucleic Acid

c)

Nucleotide - Nucleic Acid

d)

Fatty Acid- DNA

6.

For enzymes to work, it has a spot where molecules dock in. What do we call this spot?

a)

active site

b)

substrate

c)

inhibitor

7.

Water is a _________ molecule.

a)

nonpolar

b)

polar

8.

This is the attraction of water molecules for each other.

a)

cohesion

b)

adhesion

c)

hydrogen bonding

9.

Of all the elements, ________ is the most significant to life.

a)

carbon

b)

hydrogen

c)

nitrogen

d)

gold

10.

Rice, potatoes, bread and legumes are good sources of _________.

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleotides

11.

The positively charged particle in an atom is the

a)

neutron

b)

proton

c)

ion

d)

electron

12.
Electrons have what charge?
a)
Negative
b)
Positive
c)
Neutral
 (No Charge)
13.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
14.

Which of the following is an example of ADHESION?

a)

water sticking to water

b)

water sticking to glass

c)

oil sticking to plastic

d)

hydrogen sticking to oxygen

15.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
16.

Property of water that allows water to climb up thin narrow tubes, against gravity

a)

Capillary action

b)

Surface tension

c)

Ice floats

d)

High heat capacity

17.

The atoms found in lipids are

a)

Carbon, hydrogen, oxygen 1:2:1 ratio

b)

Carbon, hydrogen, oxygen, nitrogen, phosphorous

c)

Carbon, hydrogen, oxygen, nitrogen, sulfur

d)

Carbon, hydrogen, oxygen, no ratio

18.

The atoms found in proteins

a)

Carbon, Hydrogen, Oxygen

b)

Carbon, Hydrogen, Oxygen, and Phosphorous

c)

Carbon, Hydrogen

d)

Carbon, hydrogen, oxygen, nitrogen

19.

What is an example of lipids

a)

Fats, oils, waxes

b)

Cellulose, starch

c)

DNA, RNA,

d)

Enzymes, hemoglobin, nails

20.

Enzymes are an example of

a)

Lipids

b)

Carbohydrate

c)

Protein

d)

Nucleic Acid

21.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
22.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
23.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
24.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
25.

Which of the following elements are found in all macromolecules? (Select all that apply).

a)
b)
c)
d)
26.

Which macromolecule stores energy?

a)

Carbohydrates

b)

Proteins

c)

Lipids/Fats

d)

Nucleic Acids

27.

Nucleic acids make up which of the two molecules listed below?

a)

FDA

b)

RNA

c)

DNA

d)

FDR

28.

An avocado is an example of a which macromolecule?

a)

Carbohydrate

b)

Lipid/Fat

c)

Protein

d)

Nucleic Acid

29.

Which type of fat is considered healthier than others?

a)

Saturated Fat

b)

Unsaturated Fat

c)

Monounsaturated Fats

d)

Trans Fat

30.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
31.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
32.

4CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

33.

A ______ is a number written in front of a chemical formula.

a)

Coefficient

b)

Subscript

c)

Exponent

d)

Coordinator

34.

How many atoms of oxygen are in

3Fe2O3

a)

6

b)

9

c)

18

d)

2

35.
Breaks up polymers, forming monomers
a)
dehydration synthesis
b)
hydrolysis
36.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
37.
The following figure is illustrating
a)

Condensation

b)
Hydrolysis

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