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MSA1 First Semester Biology Final 80 q's

Total questions: 80

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

Which of the following elements is Not one of the six most common in living organisms?

a)

carbon

b)

oxygen

c)

iron

d)

nitrogen

e)

hydrogen

2.

The characteristic way in which atoms of an element react is most related to the

a)

number of electrons in the outermost shell

b)

number of electrons in the innermost shell

c)

number of neutrons in the outermost shell

d)

number of neutrons in the nucleus

e)

size of the nucleus

3.

An atom, such as calcium, which has two electrons in the outer shell, would most likely

a)

share to acquire a complete outer shell.

b)

lose these two electrons and become a negatively charged ion.

c)

lose these two electrons and become a positively charged ion.

d)

bind with carbon by way of hydrogen bonds.

e)

bind with another calcium to satisfy its energy needs.

4.

In which of these are the electrons shared unequally?

a)

double covalent bond

b)

triple covalent bond

c)

hydrogen bond

d)

polar covalent bond

e)

ionic and covalent bonds

5.
Because water has a positively charged end and a negatively charged end, it can be described as
a)
amphipathic
b)
hydrophobic
c)
polar
d)
nonpolar
6.
Water molecules require a lot of energy to break the hydrogen bonds.  This gives water a high
a)
density
b)
polarity
c)
solvency
d)
specific heat
7.

Attractions between water molecules are called

a)

Covalent bonds

b)

Ionic bonds

c)

Polar bonds

d)

Hydrogen bonds

8.

The bond between NaCl is an example of what kind of Bond

a)

Ionic

b)

Covalent

c)

Both

d)

Neither

9.
Some insects can stand on the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
a)
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
c)
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
10.

Surface tension

a)

strong intermolecular force due to hydrogen bonds between the water molecules

b)

property of water that allows water to become attracted to other polar or ionic molecules

c)

property of water that allows water to become attracted to other water molecules

11.

Which kind of cell is prokaryotic, may or may not have a cell wall, and has no membrane bound organelles?

a)

Animal

b)

Bacteria

c)

Fungi

d)

Plant

12.

The hydrophobic tails of the phospholipid ___ to interact with water and is said to be ____.

a)

Loves, polar

b)

Loves, nonpolar

c)

Hates, polar

d)

Hates, nonpolar

13.

The hydrophilic head of the phospholipid ___ to interact with water and is said to be ____.

a)

Loves, polar

b)

Loves, nonpolar

c)

Hates, polar

d)

Hates, nonpolar

14.

What are the monomers of carbohydrates?

a)

monosaccharides

b)

disaccharides

c)

polysaccharides

d)

amino acid

15.
What is the primary function of carbohydrates in your body?
a)
Speed up chemical reactions.
b)
Give immediate energy.
c)
Help to store energy.
d)
Build cell walls in plants.
16.

Example(s) of Lipids are...

a)

Sugar

b)

Olive Oil

c)

Bread

d)

Meat

17.
Water is a universal solvent because it...
a)

it can be found anywhere

b)

it freezes when it gets cold

c)
floats when frozen
d)

dissolves most substances

18.
Type of mixture in which all substances are evenly distributed is a?
a)
Solution
b)
Solute
c)
Solvent
d)

Heterogeneous mixture

19.
Which letter represents the enzyme?
a)
A
b)
B
c)
C
d)
E
20.
In a chemical reaction, a reactant binds to an enzyme at a region known as the
a)
catalyst.
b)
product.
c)
substrate.
d)
active site. 
21.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.
22.

A monomer ...

a)

combines with other monomers to create a polymer.

b)

is a small unit.

c)

is multiple small units.

d)

None of the above.

23.
What needs to occur in order for elements to form a compound?
a)
An elemental reaction
b)
An atomic reaction
c)
An electric reaction
d)
A chemical reaction
24.
What determines the type of element an atom makes?
a)
The size of the nucleus
b)
The number of protons
c)
How much an atom weighs
d)
The number of neutrons
25.
What forms when two atoms combine? 
a)
A nucleus
b)
A proton
c)
A molecule
d)
A neutron
26.
Which two particles make up the nucleus of an atom?
a)
protons and electrons
b)
protons and neutrons
c)
molecules and compounds
d)
neutrons and electrons
27.

Species that are clearly critical to the functioning of an ecosystem are known as

a)

biodiversity

b)

keystone species

c)

main species

d)

native species

28.
What three factors can affect ANY population's growth rate?
a)
Birthrate, death rate, migration
b)
disease, predation, migration
c)
medicine, agriculture, industry
d)
life expectancy, sanitation, vaccines
29.
Number of Individuals per unit area
a)
density-dependent factors
b)
carrying capacity
c)
renewable resource
d)
population density
30.

The size of the human population began to increase exponentially after the

a)

bubonic plague

b)

development of plowing and irrigation

c)

Industrial Revolution

d)

development of the first cities.

31.

Estimate the carrying capacity.

a)

100 deer

b)

80 deer

c)

60 deer

d)

40 deer

32.
What type of growth is shown on this graph?
a)
logistic
b)
exponential
c)
average
d)
density-independent
33.

Which of the following factors can contribute to population growth?

a)

High birth rates, low death rates, immigration, and improved healthcare.

b)

High birth rates, high death rates, emigration, and lack of healthcare.

c)

High death rates, low birth rates, emigration, and lack of healthcare.

d)

Low birth rates, high death rates, emigration, and lack of healthcare.

34.

What is carrying capacity?

a)

The minimum number of individuals of a species that an environment can support sustainably.

b)

The maximum number of individuals of a species that an environment can support sustainably.

c)

The maximum number of individuals of a species that an environment cannot support sustainably.

d)

The average number of individuals of a species that an environment can support sustainably.

35.
What is the main factor that separates the biomes?
a)
Land
b)
Water
c)
Climate
d)
Longitude
36.
Which biome is represented by the rainfall amounts in letter C?
a)
desert
b)
prairie
c)
deciduous forest
d)
tropical rain forest
37.

Which of the following hosts the greatest amount of biodiversity?

a)

The photic zone

b)

The aphotic zone

c)

The dysphotic zone

d)

It depends on the season

38.

This Biome is found in witch continents

a)

Alaska , Canada , Russia.

b)

Canada

c)

Polar

d)

Artantic

39.

Where this animal can be fund

a)

Grassland

b)

Prairies , TRopical , Savanna and Chaparral

c)

Desert

d)

Tropical Rainforest

40.
which symbiosis is this 
a)
parasitism 
b)
mutualism
c)
commensalism
d)
nonalism 
41.

What is the main difference between primary succession and secondary succession?

a)

Primary succession involves the introduction of invasive species, while secondary succession does not

b)

Primary succession is faster than secondary succession, taking only a few years to complete

c)

Primary succession occurs on bare, lifeless substrate, while secondary succession occurs in areas where an existing community has been disturbed

d)

Primary succession occurs in areas with existing vegetation, while secondary succession occurs in barren lands

42.

What is the difference between a community and a population?

a)

A community is made up of populations of different species, while a population is made up of individuals of a single species

b)

A community is a group of individuals of the same species, while a population is a group of different species

c)

A community is a group of ecosystems, while a population is a group of communities

d)

A community is a group of abiotic factors, while a population is a group of biotic factors

43.

Which process is primarily responsible for producing oxygen in Earth's atmosphere?

a)

Cellular respiration

b)

Photosynthesis

c)

Combustion

d)

Decomposition

44.

How do humans affect the carbon cycle?

a)

by cutting trees

b)

over flowing population

c)

burning fossil fuels

d)

by mining fossil fuels

45.

______is the essential component of proteins, fats, and carbohydrates, which make up all organisms.

a)

Nitrogen

b)

Carbon

c)

Water

d)

Phosphorus

46.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
47.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
How much energy is needed to build a pyramid. 
d)
The amount of energy available to the next 'feeder' in a food web.
48.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
49.

Complex trophic relationships in an ecological pyramid.

a)

Food Chain

b)

Food Web

c)

Abiotic Factor

d)

Biome

50.

Matter is passed up the ecological pyramid in a similar way to energy but recycled by decomposers and detritivores. This Biomass pyramid roughly follows the 10% rule as well.

a)

Flow of energy

b)

Flow of matter

c)

Ecological Hysteria

d)

Producers

51.

The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain.

a)

Trophic Levels

b)

Toxic Levels

c)

KeKe Levels

d)

Environmental Systems

52.

Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products and recycle nutrients back to the ecosystem.

a)

Producer

b)

Trophic

c)

Decomposer

d)

Autotrooph

53.

Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.

a)

Ominvore

b)

Detritivore

c)

Heterotroph

d)

Autotroph

54.

Animal that gets its energy and nutrition from eating plants.

a)

Parasite

b)

Herbivore

c)

Carnivore

d)

Ominvore

55.

All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organisms.

a)

Ominvores

b)

Herbivores

c)

Detritivores

d)

Flow of energy

56.

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if the egrets are there or not.

a)

mutualism

b)

commensalism

c)

competition

d)

parasitism

57.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
58.

An _____________________ is the lowest level of organization in the biosphere

a)

organism

b)

population

c)

biosphere

d)

ecosystem

59.

What does a decrease in salmon population due to an increase in river temperature indicate?

a)

an abiotic factor affecting a biotic factor

b)

an effect of predation

c)

change in population but not in abiotic factors

d)

an unchanging biological community

60.

What is a symbiotic relationship? Provide an example.

a)

An example of a symbiotic relationship is the relationship between bees and flowers, where bees pollinate the flowers while obtaining nectar for themselves.

b)

The relationship between sharks and remoras, where sharks provide protection to remoras

c)

The relationship between birds and worms, where birds help worms reproduce

d)

The relationship between lions and zebras, where lions help zebras find food

61.

The energy level diagram for a reaction is shown.

Which statement is correct?

a)

X is the energy change of the reaction.

b)

Y is the activation energy of the reaction.

c)

The energy change of the reaction is larger than the activation energy of the reaction.

d)

The reaction is exothermic.

62.

The diagram shows how the temperature change is measured when magnesium powder reacts with dilute hydrochloric acid. Thermometer reading before adding magnesium powder = 20.6 °C Thermometer reading after adding magnesium powder = 32.4 °C Which statement is correct?

a)

The reaction is endothermic and gives out heat.

b)

The reaction is endothermic and takes in heat.

c)

The reaction is exothermic and gives out heat.

d)

The reaction is exothermic and takes in heat.

63.

What happens during all endothermic changes?

a)

A gas is produced.

b)

Solids melt.

c)

The temperature decreases

d)

There is a colour change.

64.

What is a substance called if it speeds up a chemical reaction?

a)

reusable

b)

catalyst

c)

specific

d)

fragile

65.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
66.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
67.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
68.
Monosaccharides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
69.

An avocado is an example of a which macromolecule?

a)

Carbohydrate

b)

Lipid/Fat

c)

Protein

d)

Nucleic Acid

70.

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

a)
b)
c)
d)
71.

Which macromolecule is used as our main source of energy?

a)

Lipids/Fats

b)

Nucleic Acids

c)

Proteins

d)

Carbohydrates

72.

A ______________ is a large molecule.

a)

Micromolecule

b)

Polymer

c)

Amino Acid

d)

Macromolecule

73.
What is a consumer?
a)
a carnivore that eats flesh of dead animals
b)
an organism that CAN make its own food (autotroph)
c)
an organism that gets energy by eating another organism (heterotroph)
74.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
75.

True or False: Atom is made up of

tiny subatomic particles called protons, neutrons, and electrons.

a)

True

b)

False

76.

Positively charged particles that are found in the nucleus of the atom are called

a)

protons

b)

neutrons

c)

electrons

d)

elements

77.

If an element has an atomic # of 3 and the # of neutrons is 4, what is the # of electrons?

a)

3

b)

4

c)

7

d)

10

78.

If an element has an atomic # of 3 and an atomic mass of 7, what is the total number of neutrons?

a)

3

b)

4

c)

7

d)

10

79.

How can you find the # of neutrons in an atom?

a)

protons + electrons

b)

atomic mass + protons

c)

atomic # - protons

d)

atomic mass - atomic #

80.

Lily and Evelyn are studying chemistry and learn that a substance formed when two or more elements are joined chemically is called what?

a)

element

b)

proton

c)

compound

d)

electron

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