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Yr 8 Biology Revision

Total questions: 98

Worksheet time: 3hrs 16mins

Name
Class
Date
1.
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.
2.

Which do BOTH prokaryotes and eukaryotes contain?

a)

nucleus

b)

mitochondria

c)

ribosomes

d)

cell wall

3.

Bacteria is an example of a(n)

a)

prokaryotic cell.

b)

eukaryotic cell.

4.

What is the basic unit of life that can carry out all the functions of a living thing?

a)

cell

b)

atom

c)

molecule

d)

protein

5.

What type of organisms does the cell theory apply to

a)

bacteria

b)

multicellular organisms

c)

plants and animals

d)

all of the above

6.

Choose all parts of cell theory (more than 1 correct answer)

a)

All eukaryotic cells were once prokaryotic

b)

All cells come from preexisting cells

c)

All living things are made of cells.

d)

Cells are the most basic unit of life.

e)

All cells contain a nucleus

7.

Students use a microscope to look for structures present in four different cells. The students placed an X for each structure that was viewed for each cell on the table shown. Which cell that was viewed is most likely a prokaryote?

a)

Cell W

b)

Cell X

c)

Cell Y

d)

Cell Z

8.

Prokaryotic cells don't have:

a)

Membrane bound organelles.

b)

Ribosomes

c)

Genetic material (DNA or RNA).

d)

All of the above

9.

Match the following

a)

Prokaryotic

1.

These are small, single cells with a simple internal structure

b)

Eukaryotic

2.

These are larger and more complex with specialized membranous compartments

c)

Unicellular

3.

All Prokaryotes are and Some Eukaryotes can be ..

d)

Multicellular

4.

Only Eukaryotes are...

e)

Bacteria

5.

Prokaryotes include

10.

How would you write micrometers with symbols

a)

mm

b)

μm\mu m

c)

microm

d)

none of the above

11.

True or false: Bacteria and plant cells both have a cell wall

a)

True

b)

False

12.

What is the name of the structure which holds the cell and its contents together?

a)

Cell Wall

b)

Centriole

c)

Cell Membrane

d)

Vacuole

13.

The gel-like fluid that fills a cell is called what?

a)

Centriole

b)

Vacuole

c)

Cytoplasm

d)

Plasma

14.

True or false: Both plant and animal cells have a vacuole.

a)

False

b)

True

15.

Bacteria have...

a)

Free-floating DNA

b)

DNA in a nucleus

c)

No DNA

d)

DNA similar to humans

16.

The organelle responsible for plant photosynthesis.

a)

Ribosomes

b)

Chloroplast

c)

Lysosome

d)

Mitochondria

17.

The function of the cell wall is...

a)

Transport nutrients into the cell

b)

Stop water from getting out of the cell

c)

To provide structure and support

d)

Make the cell look good

18.

What is DNA for?

a)

DNA moves the cell around

b)

DNA maintains the shape of the cell

c)

DNA stores the information on how the cell should grow and reproduce

d)

DNA prevents the bacterial cell from drying out

19.

We measure cells in what units?

a)

centimetres

b)

nanometres

c)

millimetres

d)

microns/micrometres

20.

The circular image we can see our specimens on through a light microscope is called what?

a)

Stage

b)

Field of view

c)

Microscope

d)

Light

21.

Which of the following is smallest?

a)

Millimetres

b)

Micrometres

c)

Centimetres

d)

Nanometres

22.

On a microscope, the ........ moves up and down.

a)

Ocular Lens (eye piece)

b)

Objectives

c)

Base

d)

Stage

23.

Which of these lists shows the organisation of living things in the correct order?

a)

Tissue, organ system, organ, cell

b)

Cell, tissue, organ system, organ

c)

Tissue, cell, organ, organ system

d)

Cell, tissue, organ, organ system

24.

What is the name of part 1?

a)

Arm

b)

Eye piece

c)

Objective lens

d)

Stage

25.

What is the name of part 7?

a)

Eye piece

b)

Arm

c)

Stage

d)

Objective lens

26.

On a microscope, if an eyepiece has a magnification of 10 and the objective lens has a magnification of 20, what is the total magnification?

a)

2

b)

30

c)

200

d)

10

27.

When you made the microscope slide with the onion, what did you use to stain the onion

a)

Iodine

b)

Water

c)

Copper sulphate

d)

Ethanol

28.

Convert 35 mm to micrometres

(a)  

29.

Convert 8 micrometers to mm

(a)  

30.
What role do pigments play in photosynthesis?
a)
Make plants green, which is calming
b)
Capture sunlight
c)
Absorb water in roots
d)
Take in CO2
31.
a)
Flapjack Stack
b)
Grana
c)
Thylakoid
d)
Stroma
32.
a)
Stroma
b)
Thylakoid
c)
Skittle
d)
Grana
33.

Chloroplasts are green because they

a)

Reflect Green, Red and Blue light

b)

Absorb Green, Red and Blue light

c)

Reflect Green light, but Absorb Red and Blue light

d)

Absorb Green light, but Reflect Red and Blue light

34.

Both mitochondria and chloroplasts ____

a)

contain their own unique ribosomes that are different than the cells

b)

contain their own unique DNA that are different than the cells

c)

are specialized organelles that capture and release energy

d)

are found in both in plants and animals

35.

Powerhouse of the cell, organelle that is the site of ATP ( energy production ) and cellular respiration in plants and animals.

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Vacuoles

36.

Increase the surface area available for ATP synthesis

a)

cristae

b)

matrix

c)

inner membrane

d)

outer membrane

37.
What are the products of aerobic respiration?
a)
Glucose and oxygen
b)
Carbon dioxide and water
c)
Lactic acid
d)
Carbon monoxide
38.
In which two layers of the leaf are most active  chloroplasts found?
a)
Palisade and spongy mesophyll
b)
Epidermis and stomata
c)
xylem and phloem
d)
Roots and spongy mesophyll
39.

The inner membrane of mitochondria is usually , highly convoluted forming a series of infoldings known as

a)

thylakoids

b)

cristae

c)

grana

d)

lamella

40.

The openings that are found in the leaves of plants are called:

a)

Stomata

b)

Chlorophyll

c)

Xylem

d)

Chloroplast

41.
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
42.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
43.
The formula for glucose is...
a)
C12 H22 O11
b)
NaCl
c)
NaOH
d)
C6 H12 O6
44.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

45.

The rate of photosynthesis can be influenced by...

a)

Temperature

b)

Carbon dioxide levels

c)

Light intensity

d)

Oxygen concentration

46.

Temperatures that are too high can slow photosynthesis because

a)

stomata stay open

b)

enzymes are ruined

c)

there is not enough CO2

d)

there is too much water

47.
Which of the following organisms is autotrophic?
a)
mushroom
b)
mold
c)
green tree frog
d)
cyanobacterium
48.
______________ produces the most ATP.
a)
photosnthesis
b)
aerobic respiration
c)
anaerobic respiration
d)
glycolysis
49.

How many membrane coverings does mitochondria have?

a)

0

b)

2

c)

1

d)

none of the above

50.

What does ATP have that ADP does not have?

a)

Ribose Sugar

b)

Adenine

c)

3 Phosphate Chain

d)

2 Phosphate Chain

51.

There are two types of Cellular Respiration:

a)

Aerobic Respiration (In the Presence of Oxygen)

b)

Aerobic Respiration (Without Oxygen)

c)

Anaerobic Respiration (In the Presence of Oxygen)

d)

Anaerobic Respiration (Without Oxygen)

52.

If prokaryotic unicellular living things do not have a mitochondria, where does Cellular Respiration take place?

a)

Cytoplasm

b)

Nucleus

c)

Ribosome

d)

Endoplasmic Reticulum

53.

Match the following

a)

Aerobic

1.

Presence of Oxygen

b)

Anaerobic

2.

Absence of Oxygen

c)

Glycolysis

3.

Cytoplasm

d)

Krebs Cycle

4.

Mitochondria

e)

Electron Transport Chain

5.

Inner Membrane of Mitochondria

54.
What is tube that is also known as your wind pipe?
a)
esophogus
b)
bronchi
c)
trachea
d)
alveoli
55.
The air sacs that are covered with capillaries where gas exchange takes place
a)
bronchi
b)
lungs
c)
oxygen
d)
alveoli
56.
Name the structure labeled 8 
a)
lungs 
b)
trachea 
c)
diaphragm 
d)
alveoli 
57.

Which is an adaptation to increase rates of gas exchange in the lung?

a)

Small surface area

b)

Dry surface

c)

High vascularization

d)

Muscular alveoli

58.
What is the main bone structure that protects the lungs
a)
Vertebrae
b)
Rib cage
c)
Skull
d)
Pelvis
59.

Where does Oxygen go after it enters the lungs?

a)

it moves to the mouth through exhalation

b)

it stays in the lungs

c)

it moves to the bloodstream through diffusion

d)

it moves to the body cells through diffusion

60.

How does the body remove carbon dioxide from the cells?

a)

The body cells converts carbon dioxide into carbon monoxide

b)

The body cells don't expel the waste, they store them for future use

c)

The body cells expel the carbon dioxide through the use of the nucleus

d)

The carbon dioide diffuses out of the body cells and into the bloodstream due to differences in the concentration gradient

61.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

62.

How does the diffusion gradient constantly fluctuate between the bloodstream and alveoli within the lungs?

a)

The flow of the bloodstream carries away the platelets

b)

The flow of the bloodstream carries away the oxygen

c)

The concentration is stable within the bloodstream and alveoli

d)

The gradient is automatically kept constant via the brain

63.

Carbohydrates are broken down into:

a)

Proteins

b)

Lipids

c)

Fats

d)

Glucose

64.

Which letter on the diagram shows an area where the concentration of oxygen would always be high?

a)

A

b)

B

c)

C

d)

D

65.

Which letter on the diagram shows an area where the concentration of oxygen would always be lower?

a)

A

b)

B

c)

C

d)

D

66.

Which of the following things assists the gases O2 and CO2 to diffuse quickly to where they need to go?

a)

Inhaled air is always coming in (with lots of O2)

b)

The blood in the capillaries is always moving through

c)

The alveoli and the capillaries have very thin walls

d)

The red blood cells are very good at carrying oxygen around the body

67.

Which of the following help with mechanical digestion

a)

Saliva

b)

Chewing

c)

Stomach Acid

d)

Muscular squeezing

68.

Which organ churns food and uses acid and enzymes to break down food?

a)

stomach

b)

esophagus

c)

mouth

d)

epiglottis

69.

What connects the mouth to the stomach

a)

epiglottis

b)

pylorus

c)

esophagus

d)

tongue

70.
Nutrients from digested food are absorbed in which digestive organ?
a)
Small Intestine
b)
Stomach
c)
Large Intestine
d)
Gallbladder
71.
Enzymes (chemicals) in your saliva help break down food while chewing.  This is...
a)
Mechanical digestion
b)
Chemical digestion
72.

The teeth and tongue of the oral cavity break foodstuff down physically. This is an example of

a)

mechanical digestion

b)

chemical digestion

c)

absorption

d)

peristalsis

73.

Which organ stores and releases bile?

a)

liver

b)

gallbladder

c)

pancreas

74.

Which organ makes bile?

a)

liver

b)

gallbladder

c)

pancreas

75.
Which of the following helps digest starch in the mouth...
a)
salivary amylase
b)
lysozymes
c)
mucin
d)
bolus
76.

What is the process of wave-like muscle contractions that moves food through the digestive tract?

a)

Pericardium

b)

Peristalsis

c)

Pepsin

d)

Pericoronitis

77.

What are these structures call that are found on the lining of the small intestine?

a)

Gallbladder

b)

Villi

c)

Sphincter

d)

Duodenum

78.

What is the term given to a ball-like mixture of food and saliva that forms in the mouth?

a)

Peristalsis

b)

Mucus

c)

Epiglottis

d)

Bolus

79.

Take a look at this skull. What did this animal more than likely eat?

a)

meat

b)

plants

c)

both plants and animals

80.

Classify this skull as a herbivore, carnivore, or omnivore.

a)

herbivore

b)

carnivore

c)

omnivore

81.

Molars on an animal is used for

a)

whistling.

b)

grinding.

c)

laughing.

82.

Canines on a predator are used for

a)

opening up a can lid.

b)

having a great smile.

c)

digging in the ground.

d)

tearing into the prey's meat.

83.

Deoxygenated blood flows from body parts to ______ of the heart.

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

84.

Small blood vessels that diffuse oxygen, carbon dioxide, and nutrients.

a)

heart

b)

arteries

c)

veins

d)

capillaries

85.

What is the main artery called?

a)

heart

b)

ventricle

c)

aorta

d)

atrium

86.

From which chamber of the heart does blood leave to go to the lungs?

a)

lower ventricle

b)

upper ventricle

c)

left ventricle

d)

right ventricle

87.

Which type of blood vessel carries blood away from the heart?

a)

arteries

b)

ventricles

c)

aorta

d)

veins

88.

The upper chambers of your heart are called ______

a)

atrium

b)

ventricle

c)

vesticle

d)

artery

89.

A _____ is a blood vessel that carries blood to the heart

a)

blood vessel

b)

artery

c)

vein

d)

capillary

90.
Separates the chambers of the heart.
a)
mitral valve
b)
septum
c)
aortic valve
91.
Major artery at the top of the heart sends oxygenated blood from the left ventricle to the rest of the body.
a)
aorta
b)
pulmonary artery
c)
inferior vena cava
92.
What portion of the heart is supposed to be  the most muscular?
a)
upper
b)
lower
c)
septum
93.

The pulmonary artery is the artery that carries the blood to your heart from your lungs.

a)

True

b)

False

94.
Name this part.
a)
Right ventricle
b)
Aorta
c)
Right atrium
d)
Atrium
95.
Name this part.
a)
Right ventricle
b)
Pulmonary artery
c)
Left ventricle
d)
Right atrium
96.
Which side of the heart pumps blood into the lungs?
a)
Right
b)
Left
97.
A flap of tissue that prevents blood from flowing backward
a)
Aorta
b)
Atrium
c)
Septum
d)
Valve
98.

What is the vein that carries blood in the heart?

a)

aorta

b)

vena cava

c)

left atrium

d)

right atrium

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