Deck 2: Chemistry of Living Things

Question 1

Sitting is a chair is an example of _____ energy

A)potential
B)kinetic
C)ongoing

Answer 1

A

Question 2

Hydrogen is an example of an atom.

Answer 2

True

Question 3

Enzymes are specialized protein molecules found in all living cells.

Answer 3

True

Question 4

Medical imaging refers to invasive techniques and processes.

Question 5

Atoms that are alike combine to form the next stage of matter, which is a(n) _____.

A)compound
B)molecule
C)element

Question 6

Triglycerides are a type of _____.

A)protein
B)fat
C)carbohydrate
D)glycogen

Question 7

Another name for a base is alkali.

Question 8

Water makes up what percentage of our body weight?

A)35% to 40%
B)55%to 65%
C)75% to 80%
D)greater than 90%

Question 9

The nucleus of every human cell contains how many chromosomes?

A)23
B)46
C)69
D)92

Question 10

The sour taste of lemons is due to the presence of a compound called a(n) _____.

A)acid
B)base
C)salt
D)pH

Question 11

Fructose found in fruit and honey is an example of a disaccharide.

Question 12

Nuclear medicine is a branch of medicine that uses radioactive isotopes to prevent, diagnose, and treat disease.

Question 13

Phospholipids are lipids that contain cholesterol.

Question 14

When an acid and a base are combined, they form a salt and water. This type of reaction is called a(n) _____.

A)negatively charged hydroxide ion
B)neutralization
C)ionization

Question 15

Electrolytes are responsible for the acidity or alkalinity of solutions and can conduct an electrical charge.

Question 16

Which of the following is an example of a lipid?

A)carbohydrate
B)protein
C)fat
D)enzyme

Question 17

The study of the chemical reactions of living things is called _____.

A)anatomy
B)biochemistry
C)physiology
D)physics

Question 18

A solution with a pH of 5 would tell you it is _____.

A)acidic
B)alkaline
C)neutral

Question 19

Buffers help a living organism to maintain a constant pH value.

Question 20

RNA structures are unique for each person and so are usable as a means of identification.

Question 21

Which of the following would best be described as a scanning procedure that provides visualization of fluid, soft tissue, and body structures without the use of radiation?

A)computed axial tomography (CAT, or CT, scan)
B)magnetic resonance imaging (MRI)
C)positron emission tomography (PET) scan
D)bone scan

Question 22

Compounds can be classified into the following three groups: ____________________, ____________________, and ____________________.

Question 23

The number of protons in an atom is equal to the number of ____________.

Question 24

Which of the following means many?

A)poly
B)uni
C)intra
D)di

Question 25

Which of the following is an example of an extracellular fluid?

A)tears
B)blood
C)fluid within the cell
D)urine

Question 26

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
Mg

Question 27

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
Na

Question 28

The smallest unit of a compound is a(n) ____________________.

Question 29

Which of the following is required for the body to function at an optimum level of health?

A)highly acidic level
B)highly alkaline level
C)state of homeostasis
D)none of the above

Question 30

Molecules known as ______________ ____________ are the building blocks of protein.

Question 31

The four groups of organic compounds are ____________________, ____________________, ____________________, and ____________________ ____________________.

Question 32

____________________ ____________________ is involved in the process of heredity.

Question 33

Molecules that contain carbon, hydrogen, and oxygen are known as ____________ _____________.

Question 34

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
O

Question 35

The smallest particles of elements that enter into chemical reactions are ____________.

Question 36

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
N

Question 37

A positively or negatively charged particle is called a(n) ____________________.

Question 38

The number of elements found naturally in our world is ____________________.

Question 39

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
K

Question 40

Milk of magnesia is an example of a(n) _____ liquid.

A)acid
B)base
C)neutral

Question 41

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
Ca

Question 42

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
H

Question 43

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
C

Question 44

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
Fe

Question 45

Match the element name with its symbol.
a.calcium
f.sodium
b.carbon
g.potassium
c.hydrogen
h.nitrogen
d.iron
i.magnesium
e.oxygen
j.phosphorus
P