The six elements that make up 99.9% of all living things include

C, K, O

, N, C

a and S

C, P, S

, H, O

and N

C, P, K

, I, O and N

N, O, P

, H, S

and T

15%

0%10%

75%1. C, K, O, N, Ca and S2. C, P, S, H, O and N3. C, P, K, I, O and N4. N, O, P, H, S and T

Which chemical elements would you expect to find in abundance in a living cell?

hydroge

n, neon, a

rgon

carbon, o

xygen, h

ydrogen

iron, m

agnesium, c

alcium

sodium, p

otassium, su

lfur

0% 0%0%

100%1. hydrogen, neon, argon

2. carbon, oxygen, hydrogen

3. iron, magnesium, calcium

4. sodium, potassium, sulfur

What are the building blocks of protein molecules?

1. Polymers

fatty a

cids

gluco

se molecu

les

amino acids

10%

90%

0%0%

1. Polymers2. fatty acids3. glucose molecules4. amino acids

Fats are important energy storage compounds because they:

1. readily

breakdown to

...

2. provide im

mediate e...

contain m

ore energy pe...

are liquid at n

ormal b

od...

don't require

nitroge

n

32%

16%

0%0%

53%

1. readily breakdown to form glucose

2. provide immediate energy

3. contain more energy per gram than carbohydrates or proteins

4. are liquid at normal body temperatures

5. don't require nitrogen

Which of the following describes the function of proteins?

energy form

ation and s...

energy use

d in m

uscles ..

.

structu

ral use

and enzy..

heredity and ge

netic co..

30%

0%

15%

55%1. energy formation

and storage2. energy used in

muscles and reaction3. structural use and

enzyme formation4. heredity and genetic

code carriers

What is the most common food storage compound in plants?

Glucose

Starch

Sucro

se

Cellulose fa

t

40%

20%

0%

25%

15%

1. Glucose2. Starch3. Sucrose4. Cellulose5. fat

The properties of water make it very valuable to living systems. Which of the following statements

regarding water is not true?

it modifies t

emperature ...

it make

s up about 5

0% o...

it is t

he greatest

solve

nt ..

it exp

ands slig

htly w

hen i...

it co

vers more th

an 75% ..

25%

55%

0%

10%10%

1. it modifies temperature extremes

2. it makes up about 50% of your body

3. it is the greatest solvent in the world

4. it expands slightly when it freezes

5. it covers more than 75% of the earth's surface

Which of the following statements are true of enzymes?

they a

re lipids

they w

ill react

with m

os...

they c

an only be used once

they u

suall

y slow down ...

they u

suall

y speed up c..

.

0%5%

70%

25%

0%

1. they are lipids2. they will react with most

body chemicals3. they can only be used

once4. they usually slow down

reactions and prevent overheating of the cells

5. they usually speed up chemical reactions

Which characteristic of water allows it to support the weight of objects more dense than

water?

capilla

ry action

surfa

ce te

nsion

specifi

c heat

Evaporation

adhesion

0%

90%

10%0%0%

1. capillary action2. surface tension3. specific heat4. Evaporation5. adhesion

Water is polar in nature. To be polar means to:

be very co

ld and difficu

l...

freeze easily

and boil ra...

have positive an

d negati..

have a low heat

capacity

0% 0%

95%

5%

1. be very cold and difficult to warm up.

2. freeze easily and boil rapidly

3. have positive and negative charged ends

4. have a low heat capacity

Which one of the following is not an organic molecule found in living organisms?

Protein

Nucleic

acid

Carbohydrate

Sodium ch

loride

Lipid

5% 5% 5%

85%

0%

1. Protein2. Nucleic acid3. Carbohydrate4. Sodium chloride5. Lipid

Which combination of particle and charge is correct?

Proton:positi

vely ch

arged

Electr

on:positively

charge

d

Neutron: n

egative

ly ch...

Proton: n

egative

ly charged

60%

10%20%

10%

1. Proton:positively charged

2. Electron:positively charged

3. Neutron: negatively charged

4. Proton: negatively charged

Which of the following molecules is made up of glycerol and fatty acids?

Suga

rs

Starch

es Lip

ids

Nucleic

acids

proteins

16%

5% 5%5%

68%1. Sugars2. Starches3. Lipids4. Nucleic acids5. proteins

An acidic solution could have a pH of

7 10 3 14

16%

0%

84%

0%

1. 72. 103. 34. 14

The three particles in an atom are

Protrons, n

eutrons, i

ons

Protons, n

eutrons, e

lect...

Proteins, lipids, c

arbohy..

.

Isotopes, e

lectrons, n

eu...

0% 0%0%

100%1. Protrons, neutrons, ions

2. Protons, neutrons, electrons

3. Proteins, lipids, carbohydrates

4. Isotopes, electrons, neutrons

What two types of molecules combine to form cell membranes?

Nucleic

acids ..

.

Phospholip

ids ...

Carbohydrates ...

Polysacch

aride...

10%5%

20%

65%1. Nucleic acids and carbohydrates

2. Phospholipids and proteins

3. Carbohydrates and proteins

4. Polysaccharides and RNA

Glycogen, Cellulose, and Starch are all

proteins

monosa

ccharid

e...

Nucleic

acids

polysacch

aride...

5%

55%

15%

25%

1. proteins2. monosaccharides3. Nucleic acids4. polysaccharides

When salt is dissolved in water, the water is the

Reactant

Solution

Solute

Solve

nt

0%

75%

15%10%

1. Reactant2. Solution3. Solute4. Solvent

A substance with a pH of 8 is

An acid

A base

Both an acid and a base

neutral

5% 0%5%

89%1. An acid2. A base3. Both an acid and a

base4. neutral

How much more acidic is a substance with a pH of 4 compared to a substance with a pH of 6?

10 times

20 times

100 times

1000 times

5%0%

50%45%

1. 10 times2. 20 times3. 100 times4. 1000 times

Which of the following is an example of a catalyst?

An enzyme

Sodium Chlorid

e W

ater

Carbon Dioxide

50%

5%

15%

30%

1. An enzyme2. Sodium Chloride3. Water4. Carbon Dioxide

Which part of a phospholipid molecule is non-polar and hydrophobic?

The lipid ta

il...

The glyce

rol/p...

30%

70%1. The lipid tails2. The

glycerol/phosphate head