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Science 8: Biology Unit Review

Total questions: 70

Worksheet time: 53mins

Name
Class
Date
1.

Which of the following can be pathogens?

a)

Bacteria only

b)

Viruses only

c)

Bacteria and viruses

d)

Neither bacteria or viruses

2.

Which pathogen is treated with antibiotics?

a)

virus

b)

bacteria

c)

parasite

d)

fungi

3.

A microbe that can cause harm is known as a

a)

Pathogen

b)

Pathogon

c)

Virus

d)

Bacteria

4.

A disease that is widespread throughout the globe (world)

a)

pandemic

b)

epidemic

c)

endemic

d)

outbreak

5.

According to the cell theory...

a)

All cells have cell walls

b)

Cells can arise spontaneously

c)

The cell is the basic unit of structure in organisms

d)

All cells have a nucleus

6.

Which apparatus is needed to observe most cells?

a)

a microphone

b)

a microscope

c)

a micrograph

d)

a micrometre

7.

What is the role of the nucleus of the cell?​

a)

Contains DNA

b)

It is the eye of the cell

c)

Controls the movement of the cell

d)

It controls the movement of substances across the cell membrane

8.

Which organelle is only found in plant cells and allows the plant to photosynthesise its own food using the energy of sunlight as a catalyst?​

a)

Vacuole

b)

Nucleus

c)

Cytoplasm

d)

Chloroplast

9.

The organism containing only a single cell is called

a)

unicellular organism

b)

multicellular organism

c)

organelle

d)

all of the above

10.

Within each cell there are a number of specialized structures called __________________ that carry out specific functions.

a)

Organelles

b)

Roots

c)

Fermenters

d)

Fibres

11.

plant cells and animal cells have the exact same structures.

a)

True

b)

False

12.

This structure is known as the "Powerhouse" in the cell.

a)

Mitochondria

b)

Nucleus

c)

Cell wall

d)

Cell membrane

13.

These structures can be found in a plant cell but NOT in an animal cell.

a)

Chloroplasts & Nucleus

b)

Mitochondria & Chloroplasts

c)

Chloroplasts & Cell wall

d)

Cell wall & Vacuoles

14.

What is the function of a plant's roots?

a)

make new seeds

b)

make food

c)

carry nutrients and water to other plarts of the plant

d)

hold the plant in place and absorb water

15.
Which is a true statement?
a)
All microorganisms are harmful.
b)
All microorganisms are beneficial.
c)
Some microorganisms are harmful while others are beneficial.
d)
Microorganisms are beneficial only to humans.
16.

The basic unit of life, microscopic in size, organisms can be single or multi

a)

organs

b)

tissue

c)

cells

d)

structures

17.

Ability to reproduce is necessary to be considered a living thing.

a)

True

b)

False

18.

Animals have a certain process for gathering energy from the sun called photosynthesis.

a)

True

b)

False

19.
What is an organism that consists of one cell?
a)
unicellular
b)
multicellular
c)
nucleus
d)
organelle
20.
What is an organism that consists of more than one cell?
a)
unicellular
b)
multicellular
c)
nucleus
d)
Organelle
21.
All living organisms are made up of ____.
a)
one or more cells
b)
eukaryotic cells
c)
prokaryotic cells
d)
bacteria
22.
Which one of the following is a characteristic of life?
a)
Growth
b)
Breathing
c)
Expelling toxins
d)
Photosynthesis
23.
A worm turns away from light is an example of a worm
a)
reproducing
b)
doing cellular respiration
c)
having cells
d)
responding to its environment
24.
Which of the following characteristics of living things best explain a cat having a litter of kittens?
a)
living things respond to their environment
b)
living things maintain homeostasis
c)
living things reproduce
d)
living things are based on a genetic code
25.
Which of the following characteristics of living things best explains why your legs and arms get longer and stronger as you get older? 
a)
living things respond to their environment
b)
living things maintain internal balance
c)
living things are made of cells
d)
living things grow and develop
26.
Before a soccer game Charlie always eats a big dinner. Which characteristic of life does this face best describe? 
a)
living things use energy
b)
living things reproduce
c)
living things grow and develop
d)
living things are based on a universal genetic code
27.

Which characteristic is shown in the image?

a)

Organisms reproduce

b)

Organisms react to stimuli

c)

Organisms can adapt

d)

Organisms use and obtain energy

e)

Organisms are made up of cells

28.
Read the following statement and choose which characteristic of living things it describes.Birds mate and the female bird then lays eggs.
a)
Obtain and Use Resources
b)
Respond to a Stimulus
c)
Grow and Develop
d)
Reproduce
29.

Green part of plant where photosynthesis occurs

a)

Glucose

b)

Carbon dioxide

c)

Chloroplast

d)

Product

30.

H2O, reactant of photosynthesis taken in through the roots

a)

Xylem

b)

roots

c)

Oxygen

d)

water

31.

CO2, reactant of photosynthesis

a)

chemical energy

b)

Chloroplast

c)

Carbon dioxide

d)

radiant energy

32.

underground organ in plants that absorbs water and minerals

a)

water

b)

roots

c)

xylem

d)

Stomata

33.

Plants use the sun's energy to convert water and carbon dioxide into sugars(glucose)

a)

chloroplast

b)

chemical energy

c)

chlorphyll

d)

photosynthesis

34.

O2, product of photosynthesis

a)

carbon dioxide

b)

xylem

c)

water

d)

oxygen

35.

C6H12O6, A simple sugar that is an important source of energy.

a)

glucose

b)

reactant

c)

roots

d)

stomata

36.

6H₂O + 6CO₂ + Light Energy → C₆H₁₂O₆+ 6O₂

a)

carbon dioxide

b)

chemical energy

c)

chloroplast

d)

formula for photosynthesis

37.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
38.
What is the ultimate source of energy for life on Earth?
a)
glucose
b)
sunlight
c)
ATP
d)
H2O
39.
Cellular respiration occurs in 
a)
chloroplasts 
b)
mitochondria
c)
golgi aparatus 
d)
thylakoid 
40.

Which type of micro-organism is:

- single-cellular

- found nearly everywhere on Earth

- found in the human body

- among the first life forms on Earth

a)

Algae

b)

Bacteria

c)

Fungi

d)

Protozoa

e)

Viruses

41.

Which type of micro-organisms:

- includes yeast and moulds

- can form symbiotic and parasitic relations with other organisms

a)

algao

b)

bacteria

c)

fungi

d)

protozoa

e)

viruses

42.

Which type of micro-organism:

- are single-cellular

- come in many different shapes and sizes

- live in a wide variety of moist environments

- is an amoeba (which can change shape)

a)

algae

b)

bacteria

c)

fungi

d)

protozoa

e)

viruses

43.

Which type of micro-organism:

- is sub-microscopic

- can only replicate inside the cells of an organism

- can infect all life forms, including other micro-organisms

a)

algae

b)

bacteria

c)

fungi

d)

protozoa

e)

viruses

44.

Definition of prokaryotic cells

a)

Cells that DO NOT have membrane-bound structures

b)

Cells that DO have membrane-bound structures

c)

cells WITH a nucleus

d)

I have no idea what prokaryotic cells are

45.

A virus cannot exist without a _______.

a)

host

b)

nucleus

c)

microbe

d)

another virus

46.

True or False: Bacteria are living organisms.

a)

True

b)

False

47.

Method used to PREVENT a virus

a)

antibiotics

b)

antifungal

c)

vaccine

d)

antiparasitic

48.

Used to treat bacterial infection

a)

antibiotic

b)

antifungal

c)

vaccine

d)

antiparasitic

49.

What is an antibiotic?

a)

The identification of an illness or other problem by examination of the medical evidence.

b)

A medicine that limits the growth of or destroys microorganisms.

c)

An overall feeling of tiredness.

d)

The period between exposure to an infection and the appearance of the first symptoms.

50.

Common cold is an example of which agent?

a)

microorganism

b)

fungus

c)

bacteria

d)

virus

51.

A molecule that the immune system recognizes either as part of the body or as coming from outside the body:

a)

Antigen

b)

Antibodies

c)

Antibiotics

d)

Antipaths

52.

The body's ability to destroy pathogens before they can cause disease is called:

a)

Tolerance

b)

Immunity

c)

Vaccine

d)

Inflammatory response

53.

Which of the following is a way to spread infectious diseases?

a)

Touching contaminated objects

b)

Not washing hands regularly

c)

Being near infected people

d)

All of these are ways

54.

When the body encounters a pathogen, antibodies are created that are specific to that pathogen. The next time the body encounters the pathogen, the response will be:

a)

Slower

b)

Faster

55.

One of your body's first defense against an incoming pathogen is/are

a)

white blood cells

b)

your skin

c)

red blood cells

d)

antibiotics

56.

Viruses need to invade a cell in order to reproduce and make more of the virus. True or false?

a)

TRUE

b)

FALSE

57.

T or F - Vaccines work by directly attacking the disease.

a)

true

b)

false

58.
Which of the following illness is caused by pathogens?
a)
Bruise
b)
Blood Clot
c)
Diabetes
d)
Influenza
59.
What is the main purpose of the immune system?
a)
support the body through bones and muscles
b)
get rid of waste from the body
c)
protect the body from pathogens
d)
move blood through the body
60.
Vaccines stimulate the body to produce...
a)
autoimmune diseases
b)
helper t-cells
c)
fever
d)
antibodies
61.
The human body has both internal and external defense against disease.  Which of these includes only internal defenses?  
a)
hair and inflammation
b)
white blood cells and sweat
c)
inflammation and white blood cells
d)
skin and mucus
62.

Why might you become ill after visiting a friend who is sick with the flu?

a)

The room your friend was in was too warm.

b)

You ate the same kind of food your friend ate.

c)

You did not dress properly.

d)

The virus that causes the flu entered your body.

63.

Which system has the primary function of fighting disease?

a)

circulatory

b)

integumentary

c)

immune

d)

respiratory

64.

One of the most important functions of the skin is to

a)

carry food to body cells.

b)

protect the body.

c)

help the body move.

d)

let food into the body.

65.

True or False: E. coli is a virus

a)

true

b)

false

66.

What does this image represent?

a)

eukaryotic- no nucleus present

b)

eukaryotic- nucleus present

c)

prokaryotic- nucleus present

d)

prokaryotic- no nucleus present

67.

Viruses only reproduce 

inside a living cell called the

a)

skin

b)

nose

c)

environment

d)

host

68.

Bacteria are decomposers that cause decay.

Decomposers are organisms that...

a)

break down alive organisms and return them to the soil

b)

break down dead organisms and return them to the soil

c)

break down dead organisms and return them to the the sun

d)

none of the above

69.

Where are bacteria located?

a)

only in the water

b)

everywhere

c)

only on my hands.

70.

When disease spreads to a great number of people in a short time.

a)

pandemic

b)

outbreak

c)

epidemic