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WorksheetsBasic Chemistry CH 2
Total questions: 40
Worksheet time: 22mins
Name
Class
Date
1.
Fats, oils, and cholesterol are all types of
a)
cell membranes.
b)
hormones.
c)
lipids.
d)
fatty acids.
2.
An ion is formed when an atom gains or loses
a)
electrons.
b)
protons.
c)
bonds.
d)
neutrons.
3.
Why is water necessary to your body?
a)
It forms the solutes in blood plasma.
b)
It prevents large changes in blood pH.
c)
It dissolves nonpolar fats and oils.
d)
It dissolves and transports substances.
4.
Carbon is unique due to the carbon atom's
a)
bonding properties.
b)
ionic compounds.
c)
hydrogen bonding strength.
d)
six outer unpaired electrons.
5.
Proteins are composed of which molecules?
a)
amino acids
b)
nucleic acids
c)
fatty acids
d)
monosaccharides
6.
DNA and RNA are two types of
a)
carbohydrates.
b)
nucleic acids.
c)
lipids.
d)
proteins.
7.
Which phrase best describes atoms?
a)
smallest basic units of matter
b)
parts of a nucleus
c)
single-celled organism
d)
positively charged particles
8.
Which of the following cannot be broken down by ordinary chemical means?
a)
element
b)
bond
c)
molecule
d)
compound
9.
Illustration
a)
This illustration is of a nucleic acid.
b)
This illustration is of a protein.
c)
This illustration is of a carbohydrate.
d)
This illustration is of a lipid.
10.
Illustration
a)
This illustration is of a nucleic acid.
b)
This illustration is of a protein.
c)
This illustration is of a carbohydrate.
d)
This illustration is of a lipid.
11.
Which category of macromolecules includes sugars and starches?
a)
proteins
b)
phospholipids
c)
unsaturated fatty acids
d)
carbohydrates
12.
The lock-and-key model of enzyme function illustrates which important characteristic of enzymes?
a)
ability to bond with a product
b)
precise fit with a particular substrate
c)
ever-changing structure
d)
ability to bind with many reactants
13.
A substance that speeds up the rate of a chemical reaction is called
a)
a catalyst
b)
a lipid
c)
a molecule
d)
an element
14.
Which macromolecule stores energy and makes up the cell membrane?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
15.
This is one job proteins do NOT have in the body
a)
storing genetic information
b)
structure
c)
speed up chemical reactions
d)
transport things through cell membrane
16.
What is the monomer of carbohydrates?
a)
monosaccharide
b)
amino acid
c)
protein
d)
fatty acid
17.
What subatomic particle is negatively charged?
a)
electrons
b)
protons
c)
neutrons
d)
solution
18.
The energy needed to get a reaction started is the
a)
adhesion energy
b)
activation energy
c)
cohesion energy
d)
chemical energy
19.
The three particles that make up atoms are
a)
protons, neutrons, solvents
b)
protons, electrons, solutions
c)
protons, neutrons, soltuions
d)
protons, neutrons, and electrons
20.
True or False. Enzymes are used up during a chemical reaction.
a)
True
b)
False
21.
Neutrons and protons make up the atom's ________.
a)
nucleus
b)
electrons
c)
solvent
d)
solution
22.
Compounds that form hydrogen ions in solution is
a)
a solution
b)
a base
c)
an acid
d)
a proton
23.
The function of carbohydrates is
a)
store genetic information.
b)
to transports substances in the body.
c)
makes up cell membrane.
d)
main source of energy.
24.
Which macromolecule basic unit is glycerol and fatty acids?
a)
lipids
b)
carbohydrates
c)
proteins
d)
nucleic acids
25.
What does an enzyme do?
a)
Adds activation energy to a reaction
b)
Raises the amount of activation energy for the reaction
c)
Lowers the amount of activation energy needed for a reaction
d)
Does not affect the metabolism of living things
26.
What does a buffer do?
a)
Neutralizes strong acids
b)
Neutralizes strong bases
c)
Neutralizes strong acids and strong bases
27.
Which of the following is NOT true about water?
a)
Water can moderate temperatures
b)
Water does not dissolve many substances
c)
Water can climb against gravity
d)
Water can adhere to other substance
28.
Which is more acidic?
a)
pH of 1
b)
pH of 6
c)
pH of 7
d)
pH of 12
29.
Which is more basic?
a)
pH of 7
b)
pH of 12
c)
pH of 6
d)
pH of 1
30.
Lipase is an example of a nucleic acid
a)
True
b)
False
31.
This element is the backbone of all organic molecules.....
a)
Hydrogen
b)
Carbon
c)
Oxygen
d)
Sodium Chloride
32.
Energy stored inside chemical bonds is known as.
a)
Radiant Energy
b)
Potential Energy
c)
Kinetic Energy
d)
Mechanical Energy
33.
Unsaturated fats have one or more double bonds and increase HDL levels in our bodies
a)
True
b)
False
34.
Cellulose and starch are carbohydrates that are found in...
a)
plants
b)
animals
c)
llamas
d)
bacteria
35.
RNA stands for what?
a)
Risosome nucleic acid
b)
Ribonucleic acid
c)
Reoxyribonucleic acid
d)
Deoxyribonucleic acid
36.
What does DNA stand for?
a)
Dubstep Nucleic Acid
b)
Deoxygen Nucleic Acid
c)
Deoxyribonucleic Acid
d)
Harambe
37.
Which of the following is true regarding lipids?
a)
2nd energy source
b)
padding & protection
c)
keeps you warm
d)
all of the above
38.
Mrs. Roberts, who is in a diabetic coma has been admitted to Noble Hospital. Her blood pH indicates that she is in severe acidosis, and the medical staff quickly institute measure to bring her blood pH back within normal limits. Note the normal pH of blood, and discuss why severe acidosis is a problem.
a)
________________
b)
______________
39.
Pediatricians become concerned about the potential for brain damage when an infants temperature approaches 105 degrees Fahrenheit. Which class of organic molecules is most likely to be damaged by high temperatures? Explain why and support your claim with evidence from the chapter.
a)
_____________
b)
______________
40.
How does the enzyme lock and key mechanism work? Explain and support your answer with evidence from the chapter.
a)
________________
b)
________________
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