Review Midterm Unit 1 - Cell

Arun makes a model animal cell.

Name the part of a cell represented by:

the rubber ball : __________________

the seeds : __________________

Respectively

• Mitochondria and nucleus

• Nucleus and mitochondria

• Nucleus and cytoplasm

• Cell membrane and cytoplasm

Arun wants to make his model into a model of a plant cell.

Tick (✓) two things that he should do.

• Put the model into a box to represent a cell wall.

• Remove the seeds.

• Remove the rubber ball.

• Add some green peas to represent chloroplasts.

• Colour the jelly green to represent chlorophyll.

Zara looks at a piece of onion using a microscope.

What name is given to a group of cells like this? Choose the correct answer.

• tissue

• organ

• organ system

• organism

Zara can see a nucleus in each of the onion cells.

What is the function of the nucleus in a cell?

• control the activity of cell

• where the cell release the energy

• control what is going out and goin in the cell

• where the photosynthesis happens

Red blood cells transport oxygen around our bodies.

Their structure helps them to do this.

Tick (✓) the two correct statements about how the structure of red blood cells is related to their function.

• They contain hemoglobin, which carries oxygen.

• They have a large vacuole, which contains cell sap.

• They have a strong cell wall, so that they do not get damaged easily.

• They have chloroplasts to help them to transport food.

• They have no nucleus to make more space for carrying oxygen.

Root hair cells are also adapted for their function. Complete the sentences.

The function of root hair cells is .

They have long extensions to help them to do this.

• absorbing the water from soil

• transporting the oxygen and mineral in the body

• swapping the bacteria and virus out of the mouth

• making food or photosynthesis

The diagram below shows a plant cell.

What is the function of D (Cell membrane)?

• holds the cell in shape

• controls what goes in and out of the cell

• controls the activities of the cell

• where photosynthesis takes place

The diagram below shows a plant cell.

What does letter A show?

• mitochondrion

• chloroplast

• cell wall

• cell membrane

The diagram below shows a plant cell.

What does letter B show?

• mitochondrion

• chloroplast

• cell wall

• nucleus

The diagram below shows a plant cell.

What does letter C show?

• mitochondrion

• chloroplast

• cell wall

• nucleus