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JC Science. Biological World revision questions

Total questions: 192

Worksheet time: 4hrs 4mins

Name
Class
Date
1.

The job of the heart is to . . .

a)

pump blood around the body.

b)

send food to the small intestines.

c)

break down food.

d)

give energy to the body.

2.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
3.

What carries oxygen around the body?

a)

Plasma

b)

Red Blood Cells

c)

Platelets

d)

White Blood Cells

4.

The trachea leads directly to the...

a)

Bronchioles

b)

Bronchi

c)

Oesophagus

d)

Alveoli

5.

When you breathe, your lungs take in ___ and exchange it for ___.

a)

air/oxygen

b)

oxygen/carbon dioxide

c)

carbon dioxide/waste

d)

waste/air

6.
Oxygen combines with digested food molecules in body cells to release the energy stored in them. This process is called ................... .
a)
respiration
b)
breathing
c)
digestion
7.
We can test the presence of carbon dioxide in exhaled air by bubbling it into .................... . 
a)
limewater
b)
lime juice
c)
lime
d)
water
8.

Why would a person want to limit their intake of sodium (salt)?

a)

Sodium weakens bones and teeth

b)

Sodium can lead to high blood pressure

c)

Sodium is linked to cancer

d)

Sodium causes a person to be diabetic

9.

What gas is given off as a result of respiration?

a)

Oxygen

b)

Carbon dioxide

c)

Hydrogen

d)

Nitrogen

10.

What is the arrow pointing at?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

11.

What is the arrow pointing at?

a)

Pulmonary veins

b)

Pulmonary artery

c)

Aorta

d)

Vena cava

12.

What is the arrow pointing at?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

13.

What is the arrow pointing at?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

14.

What is the arrow pointing at?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

15.
The heart has ___ chambers.
a)
1
b)
2
c)
3
d)
4
16.

This chamber of the heart RECEIVES blood returning from the body:

a)

right atrium

b)

right ventricle

c)

left atrium

d)

left ventricle

17.

A flap of tissue that prevents blood from flowing backwards is called?

a)

Aorta

b)

Atrium

c)

Septum

d)

Valve

18.

Compared to arteries, veins........

a)

carry oxygenated blood

b)

have thinner walls.

c)

have thicker walls

d)

hold their shape better when cut.

19.

What carries mostly oxygen-rich blood away from heart?

a)

Arteries

b)

Veins

c)

Capillaries

20.

What is the function of the heart?

a)

Protects organs and produces red blood cells.

b)

Generates heat.

c)

Breaks down food into nutrients.

d)

A pump which moves the blood.

21.

Which is NOT a function of the circulatory system?

a)

Delivers O2 and nutrients to cells

b)

Removes CO2 and waste from cells

c)

Break down carbohydrates into glucose

d)

Transports other materials through body

22.

Arteries, veins, and capillaries are three types of __________

a)

heart valves

b)

blood vessels

c)

cells

d)

veins

23.
The term "pulmonary" means "relating to or affecting the..."
a)
heart
b)
lungs
c)
valves 
d)
capillaries 
24.

The __________________________ bring oxygenated blood from the lungs to the heart.

a)

pulmonary veins

b)

pulmonary artery

c)

aorta

d)

superior vena cava

25.

Identify this structure:

a)

septum

b)

base

c)

semilunar valve

d)

bicuspid valve

26.
The ___________________ is/are responsible for assisting in the immune system's defense against pathogens. 
a)
plasma
b)
platelets
c)
white blood cells 
d)
red blood cells
27.

What are the three functions of the blood?

a)

Transportation, filtration, and protection

b)

Transportation, temperature regulation, and protection

c)

Protection, temperature regulation, and filtration

28.

Iron-rich protein molecules that releases the oxygen when red blood cells enter the capillaries and come into close contact with body cells:

a)

Platelets

b)

Haemoglobin

c)

White blood cells

d)

Plasma

29.

Small, irregular shaped pieces of cells that plug wounds and stop bleeding:

a)

White blood cells

b)

Red blood cells

c)

Plasma

d)

Platelets

30.
______________ are the smallest blood vessels.
a)
Arteries
b)
Veins
c)
Capillaries
31.
The circulatory system works with the ___________ system to provide our body with oxygen.
a)
respiratory
b)
digestive
c)
muscular
d)
skeletal
32.

What does de-oxygenated mean?

a)

Oxygen-rich

b)

Blood flow

c)

Oxygen-poor

d)

Water flow

33.

Which describes a task performed by the circulatory system?

a)

Creating red blood cells

b)

Sending messages to the brain

c)

Transporting waste materials

d)

Producing energy from food

34.

Your blood is made up of which of the following?

a)

Plasma, red blood cells, blue blood cells

b)

White and red blood cells

c)

Plasma and platelets

d)

Plasma, red blood cells, white blood cells, and platelets

35.

We breathe in carbon dioxide and breathe out oxygen.

a)

True

b)

False

36.

Identify number 1:

a)

Lungs

b)

Pharynx

c)

Mouth

d)

Alveoli

37.

Identify number 6:

a)

Lungs

b)

Trachea

c)

Mouth

d)

Alveoli

38.

Identify number 3:

a)

Pharynx

b)

Trachea

c)

Bronchus

d)

Alveoli

39.

Which are the main organs of the respiratory system?

a)

Heart

b)

Stomach

c)

Lungs

d)

Nose

40.

Where is the site of gas exchange in the body?

a)

Alveoli

b)

Nose

c)

Lung

d)

Bronchi

41.

Which part of the respiratory system plays a major role in speech?

a)

Nose

b)

Pharynx

c)

Larynx

d)

Trachea

42.

What are the two short tubes that carry air into the lungs?

a)

Trachea

b)

Bronchioles

c)

Lungs

d)

Bronchi

43.

What part(s) of the skeleton protects the lungs?

a)

Ribs

b)

Sternum

c)

Patella

d)

Stomach

44.

What is the material found in the ears and tip of the nose that also holds the trachea open?

a)

Cartilage

b)

Synovial fluid

c)

Bone

d)

Mucus

45.

What reagent is used to show the presence of carbon dioxide?

a)

Hydrochloric acid

b)

Limewater

c)

Litmus

d)

Deionised water

46.
Which two systems work together to transport nutrients to the body for energy?
a)
The nervous and digestive systems
b)
The respiratory and circulatory systems
c)
The digestive and circulatory systems
d)
The skeletal and digestive systems
47.

Which body system breaks down food and sends nutrients to all of the body's organs?

a)

Nervous

b)

Spinal

c)

Skeletal

d)

Digestive

48.

Which body system gives your body shape and protects most major organs?

a)

Muscular

b)

Cardiovascular

c)

Skeletal

d)

Nervous

49.

Which of the following shows the levels of organization of an organism from LEAST to MOST complex?

a)

Cells-tissues-systems-organs

b)

Organs-cells-systems-tissues

c)

Systems-organs-tissues-cells

d)

Cells-tissues-organs-systems

50.

Which of the blood vessels do you think have the greatest blood pressure?

a)

Veins

b)

Capillaries

c)

Atria

d)

Arteries

51.

Which sequence lists the hereditary material found inside cells from the smallest unit to the largest unit?

a)

chromosome → gene → nucleus

b)

chromosome → nucleus → gene

c)

gene → nucleus → chromosome

d)

gene → chromosome → nucleus

52.

Which fertilization and development method is most typical of humans before birth occurs?

a)

external fertilization and external development

b)

external fertilization and internal development

c)

internal fertilization and external development

d)

internal fertilization and internal development

53.

The sequence below represents the organization

of the genetic information in the nucleus of

a cell. One term in the sequence is represented

by X

DNA--> X --> chromosome

a)

gene

b)

mutation

c)

clone

d)

protein

54.

What type of reproduction is performed by the ameba?

a)

regeneration

b)

asexual

c)

sexual

d)

budding

55.

Which process is responsible for the growth and repair of human tissue?

a)

evolution

b)

germination

c)

cell division

d)

natural selection

56.

How many males in this model show the trait?

a)

one

b)

three

c)

seven

d)

four

57.

Diagrams A through E represent five stages in a simplified model of sexual reproduction and development. At which stage is fertilization occurring?

a)

A

b)

B

c)

C

d)

E

58.

Between which two stages does cell division first occur?

a)

A and B

b)

B and C

c)

C and D

d)

D and E

59.

The Punnett square represents a cross between two parent pea plants. The gene for round shape (R) is dominant over the gene for wrinkled shape (r). What percentage of the offspring will have a round shape?

a)

100%

b)

50%

c)

25%

d)

0%

60.

Which gas is used by humans in the process of cellular respiration?

a)

nitrogen

b)

oxygen

c)

carbon dioxide

d)

water

61.

Which process occurs during the growth and development of a fertilized human egg?

a)

cell division

b)

natural selection

c)

sexual reproduction

d)

evolution

62.

If the pattern of growth continues, how many bacteria will be in sample B when six hours have elapsed?

a)

32

b)

64

c)

1024

d)

2056

63.

Genes are a part of a

a)

cell membrane

b)

chromosome

c)

hormone

d)

vitamin

64.

Compared to the amount of genetic information

contained in a normal human body cell, the amount

contained in a normal human sperm cell is

a)

the same

b)

twice as much

c)

one-half as much

d)

one-fourth as much

65.

The diagram to the left represents an event in human reproduction. The numbers in the drawing represent the number of

a)

genes

b)

nucleus

c)

chromosomes

d)

DNA

66.

Which sequence lists the hereditary material

found inside cells from the smallest unit to the

largest unit?

a)

chromosome → gene → nucleus

b)

chromosome → nucleus → gene

c)

gene → nucleus → chromosome

d)

gene → chromosome → nucleus

67.

The photograph to the left shows three cats with

differences in their fur length and patterns.These differences are most likely due to

a)

dietary habits

b)

asexual reproduction

c)

sexual reproduction

d)

damage from disease

68.

Which process results in the formation of a new cell with a full set of chromosomes?

a)

respiration

b)

digestion

c)

fertilization

d)

evolution

69.

A single human body cell typically contains thousands of

a)

bacteria

b)

nuclei

c)

genes

d)

chloroplast

70.

The hydra shown is reproducing asexually. What percentage of the offspring’s genetic information is the same as the genetic information of the parent?

a)

25%

b)

50%

c)

75%

d)

100%

71.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
72.
Examples of a producer
a)
frog
b)
algae
c)
worm
d)
mouse
73.
Example of a decomposer
a)
fungus
b)
mouse
c)
plants
d)
frogs
74.
A tree is a ....
a)
composer
b)
decomposer
c)
producer
75.
What is a producer?
a)
an organism that gets energy from eating other organisms
b)
an organisms that uses sunlight to make its own food
c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)
an organism that uses chemical energy to make its own food
76.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
d)
an animal that eats only herbs
77.
What is a carnivore?
a)
an animal that gets energy by eating other animals
b)
An animal that gets energy by eating only plants
c)
an animal that gets energy by eating both plants and animals
d)
an animal that makes its own energy through photosynthesis
78.
An animal that gets energy from eating both plants and animals is a 
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
79.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
80.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
81.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
82.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
83.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
84.
A producer is a (n) ______________.
a)
heterotroph
b)
omnitroph
c)
autotroph
d)
oscartroph
85.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
86.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
87.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
88.
Another name for a consumer is a
a)
heterotroph
b)
autotroph
c)
producer
d)
plant
89.
The image provided is an example of a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
90.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
91.

What gas goes into the plant before photosynthesis?

a)

Carbon Dioxide

b)

Carbon Monoxide

c)

Oxygen

d)

Nitrogen

92.

What two products does a plant make during photosynthesis?

a)
Water and Glucose
b)
Oxygen and Glucose
c)
Oxygen and Water
d)
CO2 and Glucose
93.
Which of these is NOT AN IMPACT photosynthesis has on an ecosystem:
a)
Oxygen for animals and humans to breathe
b)
Food for us to eat
c)
Taking CO2 out of the air
d)
Taking oxygen out of the air
94.

Cellular respiration is...

a)

the process by which cells break down glucose into energy.

b)

the process by which cells break light down into energy.

c)

the process by which cells communicate with other cells.

95.

In which way are photosynthesis and cellular respiration different?

a)

Cellular respiration stores ATP, while photosynthesis releases ATP.

b)

Cellular respiration produces oxygen, while photosynthesis uses oxygen.

c)

Photosynthesis releases energy, while cellular respiration stores energy.

d)

Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

96.

Cellular respiration occurs in

a)

chloroplasts

b)

mitochondria

c)

golgi aparatus

d)

thylakoid

97.

These organisms get their energy from photosynthesis:

a)

autotroph

b)

heterotroph

98.

Which type of organism would MOST likely benefit directly from increased levels of CO2?

a)

mushroom

b)

tree

c)

bird

d)

fish

99.

How can photosynthesis be related to cellular respiration?

a)

What's produced by one is needed for the other

b)

They both produce the same products

c)

They both have the same reactants (need the same things)

d)

These 2 processes have nothing in common

100.

How can energy from the sun be transferred to animals?

a)

The sun's energy is transformed into food by plants, animals eat plants as food so that they can transform that food into energy.

b)

Plants produced energy through photosynthesis, animals that eat that energy can produce food.

c)

Plants transformed energy of the sun into gases that animals can breath in to use as energy through respiration.

d)

Animals are able to use energy from the sun by eating the plants that provides energy for the animals.

101.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
102.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
103.
Plants need ________ for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
104.
What is photosynthesis?
a)
The process in which humans eat their food
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
105.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
106.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
107.
Which plant part absorbs water and nutrients?
a)
Leaf
b)
Stem
c)
Roots
d)
Flower
108.

Where do plants get the energy for photosynthesis to take place?

a)

nutrients in the soil

b)

the sun

c)

chlorophyll

d)

bee pollination

109.
____________________ provides the energy necessary for photosynthesis.
a)
water
b)
sunlight
c)
glucose
d)
soil
110.

Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play?

a)

Light is required to provide energy for photosynthesis.

b)

ATP is required as an energy source for photosynthesis.

c)

Glucose is required as an energy source for photosynthesis

d)

Oxygen is required to split water molecules in photosynthesis.

111.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
112.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
113.
Plants need ________ for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
114.
What is photosynthesis?
a)
The process in which humans eat their food
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
115.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
116.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
117.
Which plant part absorbs water and nutrients?
a)
Leaf
b)
Stem
c)
Roots
d)
Flower
118.

Where do plants get the energy for photosynthesis to take place?

a)

nutrients in the soil

b)

the sun

c)

chlorophyll

d)

bee pollination

119.
____________________ provides the energy necessary for photosynthesis.
a)
water
b)
sunlight
c)
glucose
d)
soil
120.

Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and what role does it play?

a)

Light is required to provide energy for photosynthesis.

b)

ATP is required as an energy source for photosynthesis.

c)

Glucose is required as an energy source for photosynthesis

d)

Oxygen is required to split water molecules in photosynthesis.

121.

What is the smallest LIVING unit of LIVING THINGS?

a)

a cell

b)

a mitochondria

c)

a brick

d)

a protein

122.

Plant and animal cells...

a)

are different, because plant cells have two extra parts

b)

are exactly the same

c)

are the same, except that plant cells don't have a cell membrane

123.

The cell membrane...

a)

is like a wall that blocks everything from going into the cell

b)

controls what can go into or out of a cell

c)

is hard and rigid, and gives the cell its shape, like an exoskeleton

124.

Which part of the cell CONTROLS everything that happens in the cell?

a)

mitochondria

b)

nucleus

c)

cell membrane

d)

vacuole

125.

Which part of the cell STORES water and minerals?

a)

mitochondria

b)

nucleus

c)

cell membrane

d)

vacuole

126.

Where do cells come from?

a)

They come from eggs.

b)

They come from minerals in water.

c)

They come from other cells.

127.

How do cells reproduce?

a)

They lay eggs.

b)

One cell divides to make 2 cells (etc.)

c)

Two cells combine and then make 4 cells.

128.

Which part of the cell is a watery, jelly-like substance?

a)

cytoplasm

b)

nucleus

c)

vacuole

d)

cell wall

129.

Which parts do ONLY plant cells have? (Animal cells don't have them!)

a)

vacuoles and mitochondria

b)

nucleus and chloroplasts

c)

chloroplasts and cell membrane

d)

cell wall and chloroplasts

130.

In PLANT cells, which part is the rigid outer layer that supports and protects the cell?

a)

cell membrane

b)

cell wall

c)

chloroplast

d)

nucleus

131.

Chloroplasts...

a)

are where plant cells do photosynthesis and make food

b)

are where plant cells produce energy

c)

are where both plant and animal cells make food (photosynthesis)

132.

Which cell part produces energy?

a)

mitochondria

b)

nucleus

c)

vacuole

d)

cytoplasm

133.

Chloroplasts...

a)

are NOT in animal cells

b)

are always in animal cells

c)

are sometimes in animal cells, and sometimes in plant cells

134.

Mitochondria...

a)

make food

b)

make energy

c)

make waste

d)

don't make anything

135.

A cell wall...

a)

is very soft and flexible

b)

is very rigid, and supports the plant cell, giving it its shape

c)

is the part that is inside the plant's nucleus

136.

Where does PHOTOSYNTHESIS happen in plants?

a)

in the nucleus

b)

everywhere in the cell

c)

in the cytoplasm

d)

in the chloroplasts

137.

True or False?: Chloroplasts contain chlorophyll, a substance that absorbs the sun's light.

a)

True

b)

False: chloroplasts contain only water and minerals.

c)

False: chloroplasts contain air, like little balloons in the leaf.

138.

Which thing is NOT made of cells?

a)

A dog

b)

A carrot

c)

A piece of candy

d)

A piece of wood from a tree

139.

True or false: ALL living things are made of cells.

a)

True

b)

False: Some living things are made of cells, and others aren't.

140.

What instrument do you need to use to see cells?

a)

A microscope

b)

A telescope

c)

A periscope

141.
What is the total magnification of a microscope with two lenses when one lens has a magnification of 10x, and the other lens has a magnification of 30x?
a)
15x
b)
30x
c)
40x
d)
300x
142.
A microscope is an instrument that.
a)
makes faraway objects look closer.
b)
makes small objects appear larger.
c)
decreases the size of small objects.
d)
increases the size of small objects.
143.
If the eyepiece of your scope has a power of 10, and the selected objective lens has a power of 20,what is the total magnification?
a)
20x
b)
30x
c)
200x
d)
2000x
144.
When should the fine adjustment knob always be used?
a)
with the low power objective only
b)
with the medium power objective only
c)
with the high power objective only
d)
with both the medium and high power objectives
145.
When you focus on a new specimen, always begin with
a)
low power and coarse adjustment.
b)
low power and fine adjustment
c)
high power and coarse adjustment
d)
high power and fine adjustment
146.
If you move the slide left while viewing, in which direction will it appear to move?
a)
right 
b)
left
c)
up 
d)
down
147.
If you move the slide down while viewing, in which direction will it appear to move?
a)
right 
b)
left
c)
up 
d)
down
148.
If your teacher asks you to move a microscope to table, how do you carry it?
a)
by the body tube and the eyepiece
b)
with one hand
c)
one hand on the arm and the other under the base
d)
with one hand on the base and the other on the eyepiece.
149.
Which part of the microscope controls the amount of light available?
a)
coarse adjustment knob
b)
diaphragm
c)
objective lens
d)
revolving nosepiece
150.
Which part lets you turn up the power of magnification, such increasing from 40x to 100x?
a)
coarse adjustment knob
b)
diaphragm
c)
field-of-view
d)
revolving nosepiece
151.
Which part is the lighted area you see when looking through the eyepiece?
a)
coarse adjustment knob
b)
diaphragm
c)
field-of-view
d)
revolving nosepiece
152.
What is part 1?
a)
eye piece
b)
body tube
c)
arm
d)
coarse adjust
153.
What part is 3?
a)
eye piece
b)
base
c)
arm 
d)
coarse adjust
154.
What part is 5?
a)
coarse adjustment
b)
fine adjustment
c)
diaphragm
d)
stage
155.
What is part 11?
a)
coarse adjustment
b)
fine adjustment
c)
diaphragm
d)
stage
156.
What is part 2?
a)
arm
b)
base
c)
body tube
d)
illuminator
157.
What is part 6?
a)
arm 
b)
base
c)
body tube
d)
illuminator
158.

A version of a gene is called a(n)

a)

allele

b)

characteristic

c)

specific gene

d)

trait

159.

A trait that is expressed if one copy of the allele is present is a(n)

a)

characteristic

b)

dominant trait

c)

gene

d)

recessive trait

160.

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

a)

dominant trait

b)

genotype

c)

phenotype

d)

recessive trait

161.

An organism’s physical expression of a trait is called a(n)

a)

dominant trait

b)

genotype

c)

phenotype

d)

recessive trait

162.

What is it called when both alleles in a genotype are the same?

a)

Dominance

b)

Heterozygous

c)

Homozygous

d)

Recessiveness

163.

What is it called when the alleles in a genotype are different?

a)

Dominance

b)

Heterozygous

c)

Homozygous

d)

Recessiveness

164.

Which pair of alleles is an example of homozygous recessive?

a)

bb

b)

BB

c)

Bb

165.

Which pair of alleles is an example of homozygous dominant?

a)

tt

b)

TT

c)

Tt

166.

Which pair of alleles is an example of heterozygous alleles?

a)

ll

b)

LL

c)

Ll

167.

What are physical characteristics of an organism?

a)

Alleles

b)

Genotypes

c)

Genes

d)

Traits

168.

In a Punnett square, a lower case letter stands for a ____________ allele.

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

169.

Hair color, height, eye color and freckles are examples of human traits. What do we call the physical expression of the genetic material of an organism?

a)

genetics

b)

heredity

c)

genotype

d)

phenotype

170.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
171.

Which of the following genotypes is homozygous dominant?

a)

A

b)

Aa

c)

AA

d)

aa

172.

Bb is a ______.

a)

genotype

b)

phenotype

173.
Fungi is benefical to us because of the following reason:
a)
They are a source of oxygen
b)
They can clean up pollution
c)
They are a source of antibiotics
d)
They help to clean run off from waste
174.
Which of the following is an example of a harmful microorganism?
a)
Fungi used as antibiotics
b)
Ecoli on food that makes people sick
c)
Bacteria found in yogurt.
d)
Microorganisms helping dead matter to decay
175.
Probiotics are an example of ....
a)
A microorganisms that can make people sic
b)
A microorganism that lives in the ocean
c)
An example of bacteria and all bacteria is harmful
d)
an example of live bacteria and yeast that is helpful to humans by aiding in the digestion of food
176.
Which of the following statements are true?
a)
All microorganisms are bad
b)
All microorganisms are good
c)
Some microorganisms are harmful, while some can be helpful
d)
Microorganisms are too small to do anything to anyone
177.
Which is not an example of a helpful microorganism?
a)
Yeast to help bread rise
b)
A virus used in a vaccine
c)
Microbes used to clean oil spills
d)
Bacteria that causes strep throat
178.
Which is not an example of a harmful microorganism?
a)
Mold growing on a kitchen sponge
b)
Bacteria found in yogurt
c)
Bacteria that causes turberculosis
d)
Salmonella on uncooked chicken
179.
Four students in Mrs. Sterling's class make the following observations.  Choose which student is correct
a)
Shelby says that all microorganisms are found in the ocean.  Some are helpful, but some are harmful.  It's best to shower after swimming at the beach.
b)
Garry says that all microorganisms are harmful.  This is why we must get vaccinations and antibiotics from the doctor.
c)
Ireland says that some microorganims are helpful and some are harmful.  The best way to protect ourselves from harmful microbes is to wash our hands with soap and water.
d)
Jonathan says it's impossible to become sick from bacteria.  Only viruses and fungi can make a person sick.  Make sure to sneeze in your elbow to prevent the spread of germs.
180.
Four of Mrs. Sterling's students go to Six Flags.  Two become sick.  Choose which answer gives the best evidence as to why the students became sick.
a)
Isabela and Sauzaas become sick because they do not like the dressed up characters at Six Flags.  
b)
James and and Salwa become sick because they did not have enough money to buy a souvenir. 
c)
Sauzaas and James become sick because they ingested some chicken at the food stand that had bacteria on it.  
d)
Isabella and Salwa become sick because they washed their hands too many times while at the park.
181.
Algae and plankton are helpful microorganisms.
a)
True
b)
False
182.
Harmful bacteria produces cheese.
a)
True
b)
False
183.
What is Penicillin (medicine) made from?
a)
Water
b)
Sugar
c)
Mold
d)
Algae
184.
_________________ bacteria are in your _________________ to help digest food.
a)
Helpful; throat
b)
Helpful; stomach
c)
Harmful; esophagus
d)
Harmful; lungs
185.

The flower is a modified

a)

stem

b)

leaf

c)

root

d)

branch

186.

Which of the following shows the female reproductive parts of a flower?

a)

anther, filament, ovary, ovule

b)

stigma, filament, ovary, ovule

c)

stigma, style, ovary, ovule

d)

anther, filament, ovary, ovule

187.

Which of the following about pollination is true?

a)

Cross-pollination occurs between flowers of same plant.

b)

Cross-pollination occurs between flowers of different plants that is of the same species.

c)

Self-pollination occurs between flowers of different plants.

d)

Cross-pollination occurs between flowers of different plants that is of different species.

188.

The diagram shows a wind-pollinated flower. Which of the following characteristics must this flower have?

(Select all correct answers.)

a)

Flower is scented.

b)

Petals are dull in colour.

c)

Anthers hang out of the flower.

d)

Stigma is large and feathery.

189.

The diagram shows an animal-pollinated flower. Which of the following characteristics must this flower have?

a)

Stigma is sticky.

b)

Flower has no scent.

c)

Petals are large and colourful.

d)

Produces sweet nectar.

190.

The male parts of the flowers are the filament and __________.

a)

stigma

b)

anther

c)

petal

d)

ovary

191.

The male reproductive cells are found in the pollen _______________.

a)

tubes

b)

grains

192.

After fertilisation, the ovules will develop into ___________.

a)

fruits

b)

seeds

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