Cells

Question 0

What instrument would you use to look at a cell?

Answer 0

Microscope

Question 1

What is an organism?

Answer 1

A LIVING THING made up of CELLS.

Question 2

What can you do to help see cells under a microscope?

Answer 2

STAIN the cell with coloured dye or iodine.

Question 3

Name 4 parts that both plant and animal cells have.

Answer 3

Nucleus
Cytoplasm
Cell membrane
Mitochondria

Question 4

What is a nucleus?

Answer 4

Contains DNA and controls what the cell does.

Question 5

What is the cytoplasm?

Answer 5

Jelly-like stuff in the cell where most of the chemical reactions happen.

Question 6

What is the cell membrane?

Answer 6

Thin skin around the cell that holds the cell together, and controls what goes in & out.

Question 7

What is the mitochondria?

Answer 7

Tiny structures in the cell where most of the REACTIONS for AEROBIC respiration happen.

Question 8

Name 3 parts that only plant cells have and animal cells don’t have.

Answer 8

Cell wall
Vacuole
Chloroplasts

Question 9

What is a cell wall?

Answer 9

Rigid outer coating containing cellulose, which gives support to the cell.

Question 10

What is a vacuole?

Answer 10

Part of a plant cell filled with cell sap (weak solution of sugar and salt)

Question 11

What is a chloroplast?

Answer 11

Part of a PLANT cell containing CHLOROPHYLL (used for photosynthesis).

Question 12

What is a unicellular organism?

Answer 12

Living thing made up of only 1 cell.

Question 13

Describe two different unicellular organisms.

Answer 13

Euglena (lives in water, swims with a tail like structure called a flagellum).

Amoeba (lives in water, squeezes water out of itself using a ‘contractile vacuole’).

Question 14

What is tissue?

Answer 14

A GROUP OF similar CELLS.

Question 15

What is an organ?

Answer 15

GROUP OF different TISSUES working together.

Question 16

What is an organ system?

Answer 16

GROUP OF ORGANS working together.

Question 17

How do things move in and out of cells?

Answer 17

By diffusion.

Question 18

Why do things need to move in and out of cells?

Answer 18

Cells need good things like glucose and oxygen to come in.

But cells don’t need waste like carbon dioxide - this needs to come out.

Question 19

What is diffusion?

Answer 19

The process where a substance moves FROM an area where there is LOTS of it, TO an area where there is LESS of it.

Question 20

What is a cell?

Answer 20

A tiny building block, found in every living organism, where respiration takes place.

Question 21

What do unicellular organisms have to help them survive?

Answer 21

They have ADAPTATIONS to the cell. Eg the tail of a Euglena.

Question 22

If an organism has MORE than one cell, what is it called?

Answer 22

Multi-cellular.

Question 23

Which type of respiration produces the most energy?

Answer 23

AEROBIC produces more energy than anaerobic respiration.

Question 24

What are the DIFFERENCES between plant and animal cells?

Answer 24

Only PLANT cells have these 3 things:

A Cell WALL (made of cellulose)
VACUOLE (filled with cell sap)
Chloroplasts (containing chlorophyll for photosynthesis)

Question 25

What are the SIMILARITIES between plant and animal cells?

Answer 25

Both plant AND animal cells have these 4 things:

Nucleus (controls the cell)
Cytoplasm (jelly where chemical reactions happen)
Cell MEMBRANE (skin around the cell)
MITOCHONDRIA (tiny structures where Aerobic respiration happens)

Question 26

Where in the cell does aerobic respiration take place?

Answer 26

Mitochondria.

Question 27

Where in the cell do most chemical reactions take place?

Answer 27

Cytoplasm.

Question 28

What part of the cell controls what the cell does?

Answer 28

The Nucleus.

Question 29

In a plant cell, where is Chlorophyll stored (used by the plant for photosynthesis)?

Answer 29

In the Chloroplasts.

Question 30

Is Cellulose found in animal cells, or plant cells, or both?

Answer 30

Plant cells only. The cell wall of a plant cell is made of cellulose.

Question 31

Which substances move into and out of cells during Aerobic respiration?

Answer 31

Glucose moves IN. Oxygen moves IN.

Glucose and oxygen is THEN turned into carbon dioxide, water and energy. So the carbon dioxide moves OUT. And the Water moves OUT.

Question 32

In diffusion, where do substances go to and from?

Answer 32

FROM areas of HIGH concentration, TO areas of LOW concentration.