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Worksheets

Let's hark back!

Total questions: 26

Worksheet time: 13mins

Name
Class
Date
1.

Which of the following processes transport oxygen from the alveoli into the capillaries?

a)

Respiration

b)

Inhalation

c)

Exhalation

d)

Diffusion

2.

What is the name of the chemical compound found in the red blood cells that gives colour to blood.

a)

Oxyhaemoglobin

b)

Haemoglobin

c)

Hormones

d)

Enzymes

3.
What gas is released into the air during cellular respiration?
a)
oxygen
b)
carbon dioxide
c)
water 
d)
glucose
4.

Where do animals get the oxygen and glucose they need for cellular respiration?

a)

Plants

b)

Mitochondria

c)

Sun

d)

other animals

5.
The main function of the circulatory system is 
a)
To give the body structure and support
b)
Excrete waste
c)
transport blood, nutrients, and gases throughout the body
d)
to transport messages from the body to the brain
6.
The main function of the red blood cells is to 
a)
allow gases to exchange
b)
fight infection
c)
give blood its color
d)
help clot blood
7.
White blood cells
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
8.
Platelets 
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
9.
The heart is made up of _________ chambers
a)
one 
b)
two 
c)
three
d)
four
10.
On and off switches to let blood in and out of the heart are known as
a)
ventricles
b)
valves
c)
buttons
d)
pulses
11.
_________ Carry blood away from the heart to various organs
a)
Arteries
b)
Capillaries
c)
Veins
12.
__________ Very small tubes that connect arteries to veins; the smallest blood vessels.
a)
Veins
b)
Capillaries 
c)
Arteries
13.
What is the main organ in the circulatory system?
a)
vein
b)
lung
c)
heart
d)
aorta 
14.
Carbon dioxide is considered a _________________
a)
food
b)
waste
c)
energy
d)
fun party favor
15.
What is a pacemaker?
a)
Electronic device used to help the heart beat regularly
b)
To help kidneys filtrate blood
c)
To measure your blood pressure
16.
What type of muscle do you find in the heart?
a)
smooth muscle
b)
Skeletal muscle
c)
cardiac muscle
17.
Red blood cells are produced in the...
a)
pancreas
b)
Heart
c)
Muscles
d)
Bone marrow
18.

The heart is about the size and shape of your . . .

a)

head

b)

fist

c)

hand

d)

foot

19.

Glucose/sugar and oxygen are...

a)

products of cell respiration

b)

reactants of cell respiration

20.

carbon dioxide and water are

a)

reactants of cell respiration

b)

products of cell respiration

21.

Cells do cell respiration in order to make

a)

water

b)

glucose

c)

energy (ATP)

d)

oxygen

22.

Which cell organelle carries out cell respiration?

a)

chloroplasts

b)

nucleus

c)

mitochondria

d)

cell membrane

23.

Anaerobic respiration

a)

does use oxygen and makes more energy

b)

doesn't use oxygen and makes less energy

c)

does use oxygen and makes less energy

d)

doesn't use oxygen and makes more energy

24.

When do humans/animals do anaerobic respiration?

a)

all the time because it is the best way to release energy (ATP)

b)

only at night

c)

only during the day

d)

when there is less oxygen available

25.
What is the name of the structure on a leaf that lets gasses flow in and out?
a)
Stomata
b)
Cell membrane
c)
chlorophyll
d)
chloroplast
26.

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.