Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit 2 Review

Total questions: 111

Worksheet time: 3hrs 21mins

Name
Class
Date
1.

Which types of organisms developed first due to the early environmental conditions on Earth?

a)

prokaryotic and aerobic

b)

prokaryotic and anaerobic

c)

eukaryotic and aerobic

d)

eukaryotic and anaerobic

2.

Miller-Urey experiment produced 21 amino acids. What is the significance of the presence of amino acids on a young Earth?

a)

Amino acids brought oxygen to the early atmosphere that started life on a young Earth

b)

Amino acids created the eukaryotic cells that brought oxygen to the early Earth's atmosphere.

c)

Amino acids are the make up proteins, which are the structural components of all living things.

3.

According to Miller-Urey's experiment, what basic molecules that developed in the early atmosphere that started life on a young Earth?

a)

Sun

b)

water

c)

salts

d)

amino acids

4.

Which process bring oxygen into the atmosphere?

a)

protein synthesis

b)

photosynthesis

c)

cellular respiration

5.

The early Earth's atmosphere lacks oxygen. True or False?

a)

True

b)

False

c)

maybe

6.

Anaerobic bacteria means a bacteria that

a)

can live without the presence of oxygen

b)

cannot live without the presence of oxygen

c)

can live longer in the presence of oxygen

7.

Who did the experiment that tried to show that organic building blocks of life could be created from toxic chemicals

a)

Oparin

b)

Miller and Urey

c)

Darwin

d)

Lamark

8.
Why are macromolecules also known as "polymers?"
a)
They are large molecules made up of many monomers. 
b)
They are large molecules added together. 
c)
There are many types of macromolecules. 
d)
Many organisms have macromolecules.
9.
All biological macromolecules are organic, meaning they have ________ and hydrogen bonds.
a)
Carbon
b)
Hydrogen
c)
Nitrogen
d)
Oxygen
10.
What are the monomers (building blocks) of CARBOHYDRATES?
a)

Monosaccharides/Glucose (simple sugars)

b)
Amino Acids
c)
Nucleotides
d)
Triglycerides/No true monomer
11.
What are the monomers (building blocks) of PROTEINS?
a)
Monosaccharides (simple sugars)
b)
Amino Acids
c)
Nucleotides
d)
Triglycerides/No true monomer
12.
What are the monomers (building blocks) of NUCLEIC ACIDS?
a)
Monosaccharides (simple sugars)
b)
Amino Acids
c)
Nucleotides
d)
Triglycerides/No true monomer
13.
What is the primary function of CARBOHYDRATES?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
14.
What is the primary function of PROTEINS?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
15.
What is the primary function of LIPIDS?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
16.
What is the primary function of NUCLEIC ACIDS?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
17.
Why are the four biological macromolecules essential for life?
a)
They all provide an organism with oxygen.
b)
They do many important jobs to keep an organism functioning.
c)
They provide an organism with food.
d)
They are all broken down for energy.
18.

One of the functions of carbohydrates is to provide ​ (a)   term energy. On the other hand, lipids provide ​ (b)   term energy.

Choose from the below words
short
long
19.

Which of the following elements is found in proteins but not found in carbohydrates or lipids?

a)

Oxygen

b)

Nitrogen

c)

Hydrogen

d)

Carbon

20.

Match the following Macromolecules to their pictures.

a)
1.

Carbohydrate

b)
2.

Lipid

c)
3.

Protein

d)
4.

Nucleic acid

21.

Nucleic acids, including DNA and RNA, are the only macromolecule that contains ​ (a)  

Choose from the below words
phosphorous
carbon
oxygen
22.

The 3 parts of the Cell Theory are...?

a)

All living things are composed of cells

Cells are the basic units of structure and function in living things

All cells are produced from other cells

b)

All living things are composed of cells

Cells are the basic units of dance and vibes in living things

All cells are destroyed from other aliens

c)

All living things are composed of Jell-O

Cells are the basic units of structure and function in living things

All cells are produced from factories in Canada

d)

All living things are composed of cells

Cells do karate and practice eating whole pies in their free time

All cells are produced from other cells

23.
Which of the following scientists concluded that all animals are made of cells?
a)
Rudolf Virchow
b)
Matthais Schleiden
c)
Robert Hooke
d)
Theodor Schwann
24.
Which of the following statements is not part of the cell theory?
a)
Cells are the basic unit of structure and function in all living things.
b)
All cells are produced from other cells.
c)
Only animal cells are composed of cells.
d)
All living things are composed of cells.
25.
The invention of the microscope made it possible for people to discover and learn about
a)
Plants
b)
Skin 
c)
Animals 
d)
Cells
26.
Who was the "scientist" who observed pond water and teeth scrapings in his microscope?
a)
Hooke
b)
Leeuwenhoek
c)
Schleidian
d)
Virchow
27.
Who looked at cork and named the cell?
a)
Robert Hooke
b)
Van Leeuwenhoek
c)
Robert Brown
d)
Francesco Redi
28.

Louis Pasteur's experiment was set up to either accept or reject the hypothesis of

a)

common ancestry.

b)

organic molecules forming from simpler molecules.

c)

electrical storms.

d)

spontaneous generation.

29.

The theory that mitochondria and chloroplasts originated as symbioses between separate single-celled organisms is known as

a)

endoeukaryotic theory.

b)

exosymbiotic theory.

c)

endosymbiotic theory.

d)

exoeukaryotic theory.

30.

Which is NOT a piece of evidence supporting the endosymbiotic theory?

a)

Mitochondria and chloroplasts have their own DNA.

b)

Mitochondria and chloroplasts have ribosomes similar in size to prokaryotic ribosomes.

c)

The inner membranes of mitochondria and chloroplasts have proteins similar to prokaryotes.

d)

Mitochondria and chloroplasts are roughly the same size as the nucleus.

31.

Whose experiment is show in the picture?

a)

Aristotle's

b)

Francesco Redi's

c)

Louis Pasteur's

d)

Albert Einstein's

32.

Whose experiment is show in the picture?

a)

Aristotle's

b)

Francesco Redi's

c)

Louis Pasteur's

d)

Leeuwenhoek's

33.

Where did Redi conclude maggots come from?

a)

Maggots came from meat

b)

Maggots are spontaneously generated

c)

Maggots come from flies

d)

Maggots come from the air

34.

What was the purpose of covering the jar with a cloth in the experiment?

a)

To keep the meat fresh

b)

To allow air in but keep flies out

c)

To trap the flies inside

d)

To prevent the smell from escaping

35.
Which is true of prokaryotic and eukaryotic cells?
a)
Prokaryotic cells are larger than eukaryotic cells.
b)
Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
c)
Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
d)
Eukaryotic cells are simpler than prokaryotic cells.
36.

Which do BOTH prokaryotes and eukaryotes contain?

a)

nucleus

b)

mitochondria

c)

ribosomes

d)

cell wall

37.

Which does only eukaryotic cells contain?

a)

nucleus

b)

DNA

c)

cell membrane

d)

ribosomes

38.
Which of the following is not a characteristic of a Prokaryotic cell?
a)
unicellular
b)
floating DNA
c)
very small
d)
complex
39.
A fossilized cell is discovered, and evidence suggests it reproduced on its own and had DNA, but a membrane did not enclose its DNA. Which type of organism would this most likely be?
a)
prokaryote
b)
eukaryote
c)
plant cell
d)
animal cell
40.

Which of the following structures is ALWAYS found in both eukaryotic and prokaryotic cells?

a)

nucleus

b)

mitochondria

c)

ribosomes

d)

cell wall

41.

The smallest unit of a living thing are

a)

atoms

b)

cells

c)

DNA

d)

organelles

42.

Bacteria is an example of a(n)

a)

prokaryotic cell.

b)

eukaryotic cell.

43.
Has cytoplasm
a)
Prokaryote
b)
Eukaryote
c)
both
44.
more complex
a)
Prokaryote
b)
Eukaryote
c)
both
d)
both
45.
multicellular
a)
Prokaryote
b)
Eukaryote
c)
both
46.
Which type of cell?
a)
Prokaryote
b)
Eukaryote
47.
Which type of cell?
a)
Prokaryote
b)
Eukaryote
48.
Where is the DNA found in a eukaryotic cell? 
a)
floating around in the cytoplasm 
b)
in the nucleus 
49.
What is diffusion?
a)
when molecules move from a low concentration to a high concentration 
b)
when molecules move from a high concentration to a low concentration.
c)
no movement 
d)
molecules move everywhere
50.
_______ regulates what enters and leaves a cell.  
a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Cytoplasm
51.

Passive Transport means

a)

Energy is used

b)

No energy is used

c)

Energy is created

52.

Which type of passive transport uses proteins to help molecules pass through the membrane?

a)
Diffusion
b)
Facilitated diffusion
c)
Osmosis
d)
All of the above
53.
Which diagram best shows the end result of diffusion?
a)
F
b)
G
c)
H
d)
J
54.

What type of transport is shown in the diagram?

a)

Osmosis

b)

Active Transport

c)

Passive Transport

d)

Diffusion

55.

What type of transport moves molecules against the concentration gradient?

a)

Passive Transport

b)

Facilitated Diffusion

c)

Active Transport

d)

Osmosis

56.

Select all of the following that are considered passive transport:

a)

Diffusion

b)

Active Transport

c)

Facilitated Diffusion

d)

Osmosis

e)

Creating the H+ ion concentration gradient for ATP synthesis

57.

What type of transport involves the natural movement of molecules from high to low concentrations?

a)

Diffusion

b)

Active Transport

c)

Dispersal

d)

Potassium Ion Channel

58.

What is the movement of particles with the concentration gradient using protein "helpers"?

a)

diffusion

b)

facilitated diffusion

c)

active transport

d)

enzymatic reactions

59.
What type of transport is illustrated?
a)
facilitated diffusion
b)
active transport
c)
diffusion
d)
osmosis
60.
The brain or "control center" of the cell. 
a)
Mitochondria
b)
Cell Membrane
c)
Cytoplasm
d)
Nucleus
61.

Protective outermost layer of animal cells:

a)

Cell Membrane

b)

Nucleus

c)

Chromatin

d)

Microtubules

62.

What is the function of a chloroplast?

a)

makes proteins for animal cells

b)

allows materials in and out of the cell

c)

provides structure and support

d)

absorbs sunlight for photosynthesis

63.

Identify the structure that is indicated by the arrow in the image.

a)

cell wall

b)

central vacuole

c)

chloroplast

d)

nucleus

64.

Identify the structure that is indicated by the arrow in the image.

a)

cell wall

b)

central vacuole

c)

chloroplast

d)

cell membrane

65.

The arrow is showing the fluid inside the cell that surrounds the cell organelles and gives the cell its shape. What is the arrow pointing to in the cell?

a)

cytoplasm

b)

mitochondria

c)

ribosomes

d)

nucleus

66.

What organelle is this??

a)

cell wall

b)

chloroplast

c)

mitochondria

d)

nucleus

e)

cell membrane

67.

I make proteins for the cell. What am I?

a)

ribosome

b)

cell membrane

c)

nucleus

d)

chloroplast

68.

This organelle breaks down (digest) worn out cell parts

a)

cytoplasm

b)

lysosomes

c)

mitochondria

d)

vacuoles

69.

This organelle stores water, and is very big in plant cells

a)

nuclolus

b)

ribosomes

c)

golgi bodies

d)

vacuoles

70.

If many of the ribosomes of a cell were destroyed, what effect would this most likely have on the cell?

a)

The cell would not be able to create energy.

b)

The cell would not be able to make proteins.

c)

The cell would not e able to photosynthesize.

d)

The cell would not be able to break down waste in the cell.

71.

Which statement is true about organelles that make food for animal and plant cells?

a)

The mitochondria makes food for animal cells, and the nucleus makes food for plant cells.

b)

The mitochondria makes food for plant cells, and the nucleus makes food for animal cells.

c)

The chloroplasts make food for animal cells, but plant cells cannot make their own food.

d)

The chloroplasts make food for plant cells, but animal cells cannot make their own food.

72.

If a cell is compared to a city, then the Golgi apparatus, acts as the

a)

trash service of the cell as it removes waste from the cell

b)

post office of the cell by packaging and sorting proteins

c)

mayor of the cell as it controls all of the cell's activities

d)

electrical plant of the cell by making usable energy

73.

This organelle is the transportation network for the cell and moves materials around in the cell. What am I?

a)

mitochondria

b)

lysosomes

c)

chloroplast

d)

endoplasmic reticulum

74.
This organelle is a rigid outer layer that protects plant cells.
a)
Cell Membrane
b)
Cell Wall
c)
Nucleus
d)
Chloroplast 
75.

The _____________ is a gel-like fluid that fills plant and animal cells. It holds the organelles in place and gives each cell its shape.

a)

Cytoplasm

b)

Cell Membrane

c)

Cell Wall

d)

Chloroplast

76.

The _____________ holds the DNA, and controls the functions of eukaryotic cells.

a)

Nucleus

b)

Nuclear Membrane

c)

Mitochondria

d)

Chloroplast

77.
An organelle that captures energy from the sunlight in order to use it to produce food in plant cells is ______________.
a)
Chromatin
b)
Chloroplast
c)
Cytoplasm
d)
Cell Membrane
78.

What is the organelle shown?

a)

Plant

b)

Ribosomes

c)

ER

d)

Chloroplast

79.
This gas was in high concentrations in the early atmosphere, and later condensed to form Earth's oceans. 
a)
oxygen
b)
carbon dioxide
c)
sulfur oxides
d)
water vapor
80.
This gas was in high concentrations in the developing atmospheres and later dissolved into rainwater, added to the oceans, then settled to the bottom of the ocean. 
a)
oxygen
b)
carbon dioxide
c)
argon
d)
water vapor
81.

What was the Earth's early atmosphere like ?

a)

Similar to Mars and Venus. A large amount of carbon dioxide,little or no oxygen small amounts of other gases, such as ammonia and methane

b)

Similar to Mercury. A large amount of oxygen, sodium and hydrogen.

c)

Similar to Jupiter. A large amount of hydrogen and helium.

d)

Similar to Pluto. A large amount of nitrogen.

82.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
83.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
84.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
85.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
86.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
87.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants 
88.

Letter C, where the reaction take place is called the

a)

active site

b)

enzyme

c)

substrate

d)

products

89.
The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements? 
a)
 Enzymes function best at a specific temperature.
b)
The body needs to be warm to prevent hypothermia.
c)
The body is kept relatively warm to prevent too much enzyme action.
d)
 There is no connection between the two statements. 
90.
As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?
a)
 It becomes inactive.
b)
It begins to replicate.
c)
 It's shape changes to engulf large proteins.
d)
It's activity increases to digest more proteins.
91-93.
91.

What is the primary function of a compound light microscope?

a)

To decrease the size of an object

b)

To magnify an object using a series of glass lenses

c)

To scan the surface of non-living cells

d)

To use magnets to aim a beam of electrons

92.

Which type of microscope was invented in the 1940s and uses magnets instead of lenses?

a)

Compound light microscope

b)

Scanning electron microscope (SEM)

c)

Transmission electron microscope (TEM)

d)

Scanning tunneling microscope (STM)

93.

Which microscope can magnify living cells?

a)

Transmission electron microscope (TEM)

b)

Compound light microscope

c)

Scanning electron microscope (SEM)

d)

Scanning tunneling microscope (STM)

94.

Match the following types of microscopes with their descriptions:

a)

Compound light microscope

1.

Produces a two-dimensional image of the cell

b)

Transmission electron microscope (TEM)

2.

Produces a high-resolution two-dimensional image of ultra-thin sections

c)

Scanning electron microscope (SEM)

3.

Produces a three-dimensional image of the cell

d)

Scanning tunneling microscope (STM)

4.

Produces images of surfaces at the atomic level

95.

There are two types of microscopes. (a)   microscopes require thin specimens that are observed by shining a light through them. (b)   microscopes create 3D images with higher magnification but can only be used to look at dead things.

Choose from the below words

Light

Scanning electron

96.

Which microscope took a 3D image of this fly's head?

a)

Compound Light

b)

Transmission Electron

c)

Dissecting

d)

Scanning Electron

97.
What is the chemical formula for water?
a)
H20
b)
h2o
c)
H2O2
d)
H2O
98.
Is the density of water ice lower, higher, or the same as liquid water?
a)
Lower
b)
Higher
c)
The same
d)
Um... what is density again
99.
What is adhesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
100.
What is cohesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
101.
What is surface tension?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
102.
molecule in which opposite ends have opposite electric charges
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
103.
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
104.
The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form
a)
less polar
b)
more polar
c)
less dense
d)
more dense
105.
Which term refers to water having partial positive and a partial negative charge?
a)
cohesion
b)
surface tension
c)
polarity
d)
adhesion
106.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
107.

What do you call any substance that dissolves another substance?

a)

Solvent

b)

Height

c)

Atoms

d)

Oxygen

108.

What property of water allows water to flow against gravity?

a)

Polarity

b)

Cohesion

c)

Capillary Action

d)

Adhesion

109.

Refer to the picture of water sticking to a leaf; this is occurring because of:

a)

Adhesion

b)

Cohesion

110.

Tamar is talking about evolution with a friend. The friend says, “It’s just a theory, so I don’t believe it. When they prove it and it becomes the law of evolution, then maybe I’ll change my mind.” Which of these possible replies best describes scientific principles or the work of scientists?

a)

Scientific theories do not become scientific laws; they are explanations for natural phenomena based on evidence.

b)

Science always finds the right answer; the answers that scientists and researchers discover never change.

c)

He should be wary of science because it is based on research and evidence, not bias and opinion.

d)

Scientists take each other at their word regarding experimental results, and the public should, too

111.

Which of the following are well supported descriptions about what happens in nature, without attempting to explain why it happens?

a)

Scientific law

b)

Scientific Theory

c)

Both a scientific law and theory

d)

Scientific Observations

112.
Scientific theories are based on
a)

general assumptions of how systems work.

b)

mathematical principles that can be proven true.

c)

large amounts of data collected over time.

d)

observations from within only one scientific discipline.

113.

Match the following

a)

Scientific theory

1.

Explains why or how something happens in nature

b)

Scientific law

2.

Describes what happens in nature

c)

Scientific model

3.

representation of a real event

d)

Hypothesis

4.

a proposed explaination, starting point of an experiment

Similar Resources on Wayground

Debbie & Menny

11 questions

Debbie & Menny

quiz

Worksheet

•

1st Grade

Inside our Earth

10 questions

Inside our Earth

quiz

Worksheet

•

7th Grade

Packaging and proteins

10 questions

Packaging and proteins

quiz

Worksheet

•

2nd - 4th Grade

Zasady muzyki - akordy

10 questions

Zasady muzyki - akordy

quiz

Worksheet

•

7th Grade

GRADE 1 QUIZ # 3 3RD QT

10 questions

GRADE 1 QUIZ # 3 3RD QT

quiz

Worksheet

•

1st Grade

BÀI TẬP VỀ TÍNH TỪ VÀ TRẠNG TỪ

10 questions

BÀI TẬP VỀ TÍNH TỪ VÀ TRẠNG TỪ

quiz

Worksheet

•

KG - University

Virginia Woolf's Shakespeare's Sister - comp.check 2

10 questions

Virginia Woolf's Shakespeare's Sister - comp.check 2

quiz

Worksheet

•

12th Grade

Grade 10 Quiz 1 4th Quarter

10 questions

Grade 10 Quiz 1 4th Quarter

quiz

Worksheet

•

10th Grade