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summer school midterm

Total questions: 66

Worksheet time: 33mins

Name
Class
Date
1.

All organisms are made of many cells

a)

true

b)

false

2.

Biology is the study of

a)

water

b)

air

c)

nothing

d)

life

3.

An organism that gets energy by eating is a(n)

a)

producer

b)

grass

c)

heterotroph

d)

primary

4.

maintaining stable internal conditions is

a)

homeopathy

b)

homeostasis

c)

homeolysis

d)

homeolevelness

5.

A hypothesis is

a)

a question

b)

an answer to a problem

c)

an experiment

d)

a testable possible explanation to a problem

6.

An element's atomic number tells you the number of

a)

protons

b)

neutrons

c)

electrons

d)

protons and neutrons

e)

protons and electrons

7.

Which part of a water molecule is negative

a)

Hydrogen

b)

Oxygen

c)

both hydrogen and oxygen

d)

neither hydrogen nor oxygen

8.

In salt water, the salt represents the

a)

stuff

b)

solute

c)

solvent

d)

solution

9.

Which of the following is the correct order of the scientific method

a)

test, make a hypothesis, analyze results, make a conclusion, collect data

b)

make a hypothesis, collect data, analyze results, test, make a conclusion

c)

make a hypothesis, test, collect data, analyze results, make a conclusion

d)

make a hypothesis, test, analyze results, collect data, make a conclusion

10.

Saturated fatty acids

a)

make 4 bonds with different elements

b)

have one double bond between carbon atoms

c)

have more than one double bond between carbon atoms

d)

have one double bond between hydrogen atoms

11.

unsaturated fatty acids

a)

make 4 bonds with different elements

b)

have one double bond between carbon atoms

c)

have more than one double bond between carbon atoms

d)

have one double bond between hydrogen atoms

12.

All organic macromolecules are made of repeating units

a)

true

b)

false

13.

When two monomers are joined, a molecule of water is produced

a)

true

b)

false

14.

What is the phosolipid bilayer of the cell membrane is made of

a)

one phosphate head(hydrophilic) and 2 fatty acid tails (hydrophobic)

b)

one phosphate head (hydrophobic) and 2 fatty acid tails (hydrophilic)

c)

only fatty acids

d)

only phosphate groups

15.

Which element is NOT often found in organic macromolecules

a)

Carbon

b)

Argon

c)

Hydrogen

d)

Oxygen

16.

Monomers are joined together to form polymers in a ________ reaction

a)

condensation

b)

hydrolysis

c)

joining

d)

multiplying

17.

Polymers are broken apart in a __________ reaction

a)

condensation

b)

hydrolysis

c)

breaking

d)

dehydration

18.

Being organic means containing carbon

a)

true

b)

false

19.

Quantitative data uses

a)

numbers

b)

words

c)

stories

d)

dinosaurs

20.

qualitative data uses

a)

numbers

b)

words

c)

decimals

d)

fractions

21.

the amount of energy required for a reaction to proceed is called

a)

free energy

b)

cost energy

c)

activation energy

d)

start energy

22.

what helps speed up chemical reactions by lowering the activation energy?

a)

buffer

b)

catalyst

c)

activist

d)

hydrogen

23.

the process where a reactant loses an electron, becoming more positively charged is called

a)

oxidation

b)

reduction

c)

redox

d)

stabliization

24.

When you are making iced tea, the iced tea mix is the ______ and the water is the _______

a)

solution/ solvent

b)

solute/ solution

c)

solvent/ solute

d)

solute/ solvent

25.

what type of bond is formed when atoms share one or more pair of electrons

a)

ionic

b)

covalent

c)

hydrogen

d)

van der waals

26.

The numbers 0-6 on the pH scale indicate a(n)

a)

acid

b)

base

c)

neutral

d)

nothing

27.

The numbers 8-14 on the pH scale indicate a(n)

a)

acid

b)

base

c)

neutral

d)

nothing

28.

The number 7 on the pH scale indicates a(n)

a)

acid

b)

base

c)

neutral

d)

nothing

29.

More hydroxide (OH) ions tells you that the solution is a(n)

a)

acid

b)

base

c)

neutral

d)

wet

30.

more hydronium (H3O+) ions tells you that the solution is a(n)

a)

acid

b)

base

c)

neutral

d)

dry

31.

how many electrons does an atom need in its outer shell for it to be stable?

a)

4

b)

6

c)

8

d)

10

32.

A stable atom will form bonds with other atoms?

a)

true

b)

false

33.

A substance that cannot be broken down into simpler substances by chemical means is a(n)

a)

atom

b)

electron

c)

proton

d)

element

34.

atoms in a solid

a)

move around freely

b)

do not move around freely but they do vibrate in place

c)

are completely uncontained

d)

do not move at all

35.

In the reaction A+B = C + D, which substances are the reactants?

a)

A

b)

A and B

c)

C

d)

C and D

36.

In the chemical reaction A+B = C + D, what are the products?

a)

A

b)

A and B

c)

C

d)

C and D

37.

an exergonic reaction

a)

releases heat and feels cool

b)

releases heat and feels warm

c)

absorbs heat and feels cool

d)

absorbs heat and feels warm

38.

an endergonic reaction

a)

releases heat and feels cool

b)

releases heat and feels warm

c)

absorbs heat and feels cool

d)

absorbs heat and feels warm

39.

water sticking to water

a)

adhesion

b)

cohesion

c)

capillarity

d)

wetness

40.

water sticking to something else

a)

adhesion

b)

cohesion

c)

capillarity

d)

wetness

41.

the property of water that lets it move against gravity

a)

adhesion

b)

cohesion

c)

capillarity

d)

floating

42.

what makes a molecule polar?

a)

even distribution of electrical charge

b)

uneven distribution of electrical charge

c)

temperature

d)

pH

43.

a bond that forms between a positively charged hydrogen atom of one molecule and a negatively charged region of another molecule

a)

covalent bond

b)

ionic bond

c)

hydrogen bond

d)

James Bond

44.

why is water a good solvent? (select ALL that apply)

a)

it is a polar molecule

b)

it dissolves polar substances

c)

it dissolves ionic compounds

d)

it dissolves nonpolar compounds

45.

surface tension is a result of

a)

adhesion

b)

cohsion

c)

capillarity

d)

temperature

46.

what must happen to water before the molecules can move faster and change from a liquid to a gas?

a)

water cannot change from liquid to gas

b)

molecules must slow down and form more bonds

c)

the hydrogen bonds must break

d)

the covalent bonds must break

47.

carbon's 4 outer electrons lets Carbon (select all that apply)

a)

form 4 covalent bonds with other elements

b)

form 4 covalent bonds with other carbon atoms

c)

form double bonds

d)

form ionic bonds with other elements

48.

the smallest unit of a macromolecule is called a(n)

a)

monomer

b)

dimer

c)

polymer

d)

daddy

49.

many monomers bonded together makes a(n)

a)

megamonomer

b)

big molecule

c)

element

d)

polymer

50.

a large polymer, or many polymers bonded together is called a(n)

a)

monomer

b)

polymer

c)

macromolecule

d)

super big molecule

51.

hydrophilic means

a)

loves water

b)

hates water

c)

has hydrogen

d)

is made up of water

52.

which functional group is represented by C-NH2

a)

methyl

b)

carboxyl

c)

amino

d)

nitrogen

53.

which bond is shown between the carbon atoms

a)

single

b)

double

c)

triple

d)

hydrogen

54.

cell energy is called

a)

DNA

b)

ATP

c)

CHO

d)

Glucose

55.

In ATP, the P is which functional group?

a)

amino

b)

carboxyl

c)

hydroxyl

d)

phosphate

56.

Where is the energy stored in a molecule of ATP?

a)

the carbon atoms

b)

the covalent bonds

c)

the phosphate group

d)

the Adenosine

57.

the monomer of a carbohydrate is a(n)

a)

monosaccharide

b)

fatty acid

c)

amino acid

d)

nucleotide

58.

the monomer of a lipid is a(n)

a)

monosaccharide

b)

fatty acid

c)

amino acid

d)

nucleotide

59.

the monomer of a protein is a(n)

a)

monosaccharide

b)

fatty acid

c)

amino acid

d)

nucleotide

60.

the monomer of a nucleic acid is a(n)

a)

monosaccharide

b)

fatty acid

c)

amino acid

d)

nucleotide

61.

a monosaccharide has an H:O ratio of

a)

2:1

b)

1:2

c)

1:1

d)

1:2:1

62.

Compounds that have the same molecular formula, but different structural formulas are called

a)

isotonic

b)

isosceles

c)

isocompared

d)

isomers

63.

what kind of bond holds amino acids together?

a)

glycosidic

b)

hydrogen

c)

protein

d)

peptide

64.

animals store glucose as

a)

starch

b)

glycogen

c)

glycolysis

d)

glucagon

65.

plants store glucose as

a)

starch

b)

glycogen

c)

glycolysis

d)

glucagon

66.

enzymes lower activation energy by

a)

linking to the substrate permanently, creating a very large molecule

b)

changing the temperature and pH of the substrate's environment

c)

linking to the substrate and weakening bonds within the substrate

d)

becoming chemically changed and reacting with the substrate

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