Organisms Revision pt 2

Organisms Revision pt 2

Joints

• Ligaments connect bone to bone

• Tendons connect muscle to bone

• Cartilage covers the end of bones to protect them from wearing away

Muslces

Muscles are tissues

Some are very strong (e.g. your bicep)

Others are weak (e.g. the ones that stand your hair on end)

Multiple Choice

I connect muscle to bone. What am I?

• Ligament

• cartilage

• tendon

Multiple Choice

I connect bone to bone. What am I?

• Ligament

• cartilage

• tendon

Multiple Choice

What are tissues

• Groups of organs working together

• Groups of cells working together

• The building blocks of life

Muscles

Muscles always pull on bone, they don't push

They have to work in pairs called antagonistic pairs

When muscles contract they get shorter

When muscles relax they get longer

Multiple Choice

Muscles only pull and never push

• true

• false

Multiple Choice

Muscles work in

• Amazing pairs

• Awful pairs

• Antagonistic pairs

• Ambitious pairs

Multiple Choice

When muscles relax they

• Get longer

• Get shorter

Open Ended

What is the name of the device we use to see cells

Multiple Choice

A microscope has an eyepiece lens of x10 magnification and an objective lens of x 50. The total magnification is...

• 10 + 50 = 60

• 10 x 50 = 500

• 50 - 10 = 40

Diffusion

Diffusion is the random movement of particles from an area of high to low concentration.

Two substances that need to move into the cells of your body by diffusion are glucose and oxygen.

One substance that needs to move out of your body cells by diffusion is carbon dioxide.

Multiple Choice

Name one substance that will move into your body's cells

• glucose

• carbon dioxide

• water

• urea

Multiple Choice

Name one substance that will move into your body's cells

• glucose

• carbon dioxide

• oxygen

Diffusion

Diffusion is the random movement of particles from an area of high to low concentration.

One substance that needs to move into plant cells is water

Without water, plants will wilt

Multiple Choice

What substance needs to move into plant cells

• urea

• hydrogen

• water

Multiple Choice

What part of the plant cell will hold the water

• the cell wall

• the cell membrane

• the vacuole

• the nucleus

Reactions mini revision pt 3

Displacement

More reactive elements will displace (push out) less reactive ones from a compound

E.g. zinc + iron sulfate --> zinc sulfate + iron

The zinc has displaced the iron because it is more reactive than iron

Multiple Choice

Sodium is more reactive than gold. Can sodium displace gold?

• Yes

• No

Multiple Choice

Sodium is more reactive than gold. Can gold displace sodium?

• Yes

• No

Multiple Choice

Aluminium is more reactive than iron. Will a displacement reaction happen if aluminium and iron oxide react?

• Yes

• No

Multiple Choice

Aluminium is more reactive than iron. Will a displacement reaction happen if iron and aluminium oxide react?

• Yes

• No

Multiple Choice

Magnesium is more reactive than copper. Will a displacement reaction happen if magnesium and copper oxide react?

• Yes

• No

Multiple Choice

Zinc is more reactive than copper. Will a displacement reaction happen if copper and zinc oxide react?

• Yes

• No