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MSA1-1st Semester Final-Biology 2023

Total questions: 80

Worksheet time: 1hrs 19mins

Name
Class
Date
1.

Energy-carrying biological molecule, which, when broke down, drives cellular activities.

a)

NADP+

b)

Rubisco

c)

Adenosine Triphosphate

d)

Pigment

2.

The scientific study of heredity.

a)

Genetics

b)

Biotechnology

c)

Plate tectonics

d)

Mendelography

3.

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.

4.

What happens during all endothermic changes?

a)

A gas is produced.

b)

Solids melt.

c)

The temperature decreases

d)

There is a colour change.

5.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
6.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
7.
The ___ is the thing being dissolved.
a)
solute
b)
solvent
c)
mixture
d)
suspension
8.
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
9.
Type of mixture in which all substances are evenly distributed is a?
a)
Solution
b)
Solute
c)
Solvent
10.
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
11.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
12.

What is a compound?

a)

A molecule that is formed from two different elements/atoms.

b)

A molecule that is formed from two or more of the same element/atom.

c)

A tiny atom that makes up an atom.

d)

The center of an atom that is formed by neutrons. protons, and electrons.

13.

The positive parts of an atom are 

a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
14.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
15.
Waxes, oils and fats are examples of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
16.
Monosaccharides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
17.
DNA and RNA are examples of 
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
18.
Proteins are made of monomers called ___________
a)
Nucleotides
b)
Monosaccharides
c)
Amino Acids
d)
Glycerol and fatty acids
19.

A ______________ is a large molecule.

a)

Micromolecule

b)

Polymer

c)

Amino Acid

d)

Macromolecule

20.

a thick layer of earth below the surface of polar regions that remains below freezing point throughout the year

a)

Living the dream

b)

Permafrost

c)

LAST

21.
What is a food WEB?
a)
an organism that gets energy by eating another organism
b)
organisms that break down dead organisms and waste material
c)
an organism that can make its own food
d)
many overlapping food chains
22.

Is the catabolic pathway in which organic molecules are broken down to release energy for use by a cell.

a)

Cellular respiration

b)

Thermodynamics

c)

Photosynthesis

23.

1.What does the first law of thermodynamics state?

a)

entropy increases

b)

energy is conserved

c)

metabolism decreases

d)

chemicals are produced

24.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
25.

Organisms that obtain their organic material from other organisms

a)

Consumers

b)

Autotrophs

c)

Producers

26.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
27.
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. 
28.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.
29.

Looking at the graph, how would you know which reaction took place with the help of an enzyme?

a)

The peak for the activation energy is lower.

b)

The peak for the activation energy is higher.

c)

There is less energy in the products than the reactants.

d)

There is no way to really tell which line on the graph shows a reaction that takes place with a reaction.

30.

Once an enzyme has helped a reaction take place, it can then

a)

be reused for another reaction with the same reactants.

b)

be broken down.

c)

be stored in the cell until it is needed again.

d)

be used to help different reactants go through a reaction.

31.

The energy needed to start a reaction is called the

a)

activation energy

b)

starting energy

c)

promoting energy

d)

reacting energy

32.

A process that changes one set of chemicals into a new set of chemicals.

a)

chemical reaction

b)

physical reaction

c)

synthetic reaction

d)

chemical production

33.

protein

a)

compounds made of amino acids.

b)

complex macromolecules that transmit and store genetic information.

c)

Compound composed of a ratio of 1 carbon :2 hydrogen :1 oxygen

d)

molecules made mostly of carbon and hydrogen that make up fats, oils, and waxes.

34.

enzyme

a)

special proteins that are biological catalysts

b)

the minimum amount of energy needed for reactants to form products

c)

The specific location where a substrate binds on an enzyme.

d)

process by which atoms in substances are reorganized into different substances.

35.

Which of the following in not a compound?

a)

H2O

b)

O

c)

CO2

d)

NaCl

36.

What is formed when substances combine in any proportions without a chemical reaction?

a)

An element

b)

An atom

c)

A chemical compund

d)

A mixture

37.

A water molecule (H2O) is formed when hydrogen (H) and oxygen (O) atoms are sharing electrons in, resulting in

a)

a covalent bond

b)

an ionic bond

c)

an element

d)

an atom

38.

Covalent bonds form when

a)

atoms share electrons

b)

atoms transfer electrons

c)

atoms share protons

d)

atoms transfer protons

39.

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

40.

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

a)

protons + electrons

b)

atomic mass + protons

c)

atomic # - protons

d)

atomic mass - atomic #

41.

Formed when two or more elements are joined chemically

a)

element

b)

proton

c)

compound

d)

electron

42.

The end result of a chemical reaction

a)

reactants

b)

electrons

c)

atomic mass

d)

products

43.

Made of one kind of atom

a)

element

b)

compound

c)

product

44.

Basic unit of matter

a)

compound

b)

atom

c)

proton

d)

electron

45.

Particles that are smaller than an atom

a)

compounds

b)

subatomic particles

c)

products

d)

reactants

46.

Any natural resource available in limited amounts or replaced extremely slowly by natural processes is called:

a)

Nonrenewable Resources

b)

Renewable Resources

c)

Endemic Resources

d)

Natural Resources

47.

Any resource replaced by natural processes more quickly than it is consumed is a:

a)

Nonrenewable Resource

b)

Renewable Resource

c)

Endemic Resource

d)

Natural Resource

48.
The process shown here is called __.
a)
biomagnification
b)
eutrophication
c)
invasive species
d)
mass extinction
49.
The number of different species and the abundance of each species in a biological community.
a)
genetic diversity
b)
ecosystem diversity
c)
extinction
d)
species diversity
50.
What is the variety of genes present?
a)
bidiversity
b)
species diversity
c)
extinction
d)
genetic diversity
51.

What is the variety of ecosystems that are present in the biosphere?

a)

species diversity

b)

genetic diversity

c)

ecosystem diversity

d)

biodiversity

52.
What is the best definition of a population?
a)
The number of plants and animals there are in an area
b)
The number of different species in one place at one time
c)
The number of individuals of one species living in the same place
d)
The total number of all organisms in an ecosystem
53.
Which limiting factor is independent of the number of individuals in a population?
a)
competition
b)
parasitism/disease
c)
stress
d)
natural disasters
54.

What is happening at the 'A' on the graph?

a)

the population overshoots above the carrying capacity

b)

the population stops growing

c)

growth begins to slow down due to limited resources

d)

growth is speeding up due to an abundance of resources

55.
Which limiting factor is independent of the number of individuals in a population?
a)
competition
b)
parasitism/disease
c)
stress
d)
natural disasters
56.
What does the graph represent?
a)
Emigration
b)
Exponential growth
c)
Immigration
d)
Logistic Growth
57.
What point on the graph represents the carrying capacity?
a)
A
b)
B
c)
C
d)
D
58.
A population is...
a)
A group of one species in one area
b)
Multiple species that live in one area
c)
All of the living and nonliving things in an area
d)
None of these
59.
When organisms move out of the population, this is known as
a)
emigration
b)
abandonment
c)
immigration
d)
succession
60.
Food, water, sunlight, shelter, and space are resources that are often __________.
a)
limiting factors
b)
wet
c)
messy
d)
found in rocks
61.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
62.
What is the carrying capacity for this sheep population?
a)
1.8 million
b)
1.25 million
c)
1.6 million
d)
1.o million
63.
If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
64.

the condition of the atmosphere at a specific place and time

a)

weather

b)

latitude

c)

climate

d)

tolerance

65.

Zone labeled "B" in this diagram.

a)

Intertidal zone

b)

Photic zone

c)

Aphotic zone

d)

Benthic zone

e)

Abyssal zone

66.

What range is "A" referring to?

a)

tolerance

b)

exponential

c)

limiting

d)

optimal

e)

logistical

67.
The area where an organism lives, grows, and develops is called a ______.
a)
Niche
b)
Ecosystem
c)
Habitat
d)
Community
68.
What abiotic factor does the tundra and desert  have in common?
a)
Temperture
b)
Low rainfall
c)
Soil quality
d)
Air quality
69.
Which biome is the coldest?
a)
Taiga
b)
Temperate rain forest
c)
Tropical rain forest
d)
Temperate deciduous forest
70.
A mature community that results when there is little change in the composition of species
a)
community
b)
population
c)
climax community
d)
species
71.
The change in an ecosystem that happens when one community replaces another as a result of changing abiotic and biotic factors
a)
succession
b)
predation
c)
competition
d)
symbiosis
72.

If a keystone species is removed from an ecosystem,

a)

abiotic and biotic factors can be affected

b)

only biotic factors can be affected

c)

only abiotic factors can be affected

d)

neither abiotic nor biotic factors can be affected

73.

Which process is part of the hydrologic cycle?

a)

nitrification

b)

evaporation

c)

decomposition

d)

ammonification

74.

Bacteria are important in the nitrogen cycle because they

a)

help convert nitrogen into a form that organisms can use

b)

respire, returning carbon dioxide into the atmosphere

c)

decay and eventually form fossil fuels

d)

produce sugars that plants can use

75.

Which two processes in the carbon cycle are also parts of the oxygen cycle?

a)

combustion and respiration

b)

photosynthesis and decay

c)

combustion and decay

d)

photosynthesis and respiration

76.

Organism that has an unusually large effect on its ecosystem.

a)

top predator

b)

tertiary consumer

c)

producer

d)

keystone species

77.

The temperature, rainfall, and soil/sand in an ecosystem would all qualify as

a)

a whole ecosystem

b)

abiotic factors

c)

biotic factors

d)

living things

78.

A model that shows a single sequence of feeding relationships is called a

a)

food web

b)

food chain

c)

feeding chain

d)

trophic level

79.
What is the most basic unit of life?
a)
cell
b)
tissue
c)
organ
d)
organ system
80.

What process regulates an organism’s internal

conditions and keeps them stable?

a)

adaptation

b)

equilibrium

c)

homeostasis

d)

metabolism

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