Cells, Nutrients and Healthy Living

Question 1

What is an organism?

Answer 1

A living thing

Question 2

What are the structures of an Animal Cell?

Answer 2

Nucleus, Cytoplasm, Cell Surface membrane, Mitochondria

Question 3

What does the nucleus do?

Answer 3

Controls what the cell does

Question 4

What does the cytoplasm do?

Answer 4

Most of the chemical reactions take place here

Question 5

What does the cell surface membrane do?

Answer 5

It hold the cell together and controls what goes in and out

Question 6

What does the mitochondria do?

Answer 6

This is where energy gets released from the cell

Question 7

What does a cell wall do?

Answer 7

Supports the cell

Question 8

What does a vacoule do?

Answer 8

Stores water

Question 9

What do Chloroplasts do?

Answer 9

They contain Chlorophylls used for photosynthesis

Question 10

What are animals and plants made up of?

Answer 10

a lot of cells

Question 11

What is a tissue made up of?

Answer 11

A group of similar cells

Question 12

What is an organ made up of?

Answer 12

A group of different tissues

Question 13

What is an organ system made up of?

Answer 13

A group of organs

Question 14

What is a multicellular organism made up of?

Answer 14

Several organ systems

Question 15

What does the M in MRS GREN stand for?

Answer 15

Movement

Question 16

What does the R in MRS GREN stand for?

Answer 16

Reproduction

Question 17

What does the S in MRS GREN stand for?

Answer 17

Sensitivity

Question 18

What does the G in MRS GREN stand for?

Answer 18

Growth

Question 19

What does the R in MRS GREN stand for?

Answer 19

Respiration

Question 20

What does the E in MRS GREN stand for?

Answer 20

Excretion

Question 21

What does the N in MRS GREN stand for?

Answer 21

Nutrition

Question 22

What is the name for an organism that is made up of only one cell?

Answer 22

Unicellular or single-celled

Question 23

What is the first step to preparing a microscope slide?

Answer 23

Take a small sample of the cells you want to look at and place it in the middle of the slide.

Question 24

What is the second step to preparing a microscope slide?

Answer 24

Use a pipette to add a drop of water or stain on the sample.

Question 25

What is the third step to preparing a microscope slide?

Answer 25

Lower a cover slip onto the sample on an angle to prevent air bubbles.

Question 26

What is the first step to use a microscope to look at cells?

Answer 26

Clip the slide you've prepared onto the stage.

Question 27

What is the second step to use a microscope to look at cells?

Answer 27

Select the lowest powered objective lens

Question 28

What is the third step to use a microscope to look at cells?

Answer 28

Turn the rough focusing knob to move the objective lens down to just above the slide.

Question 29

What is the fourth step to use a microscope to look at cells?

Answer 29

Look down the eyepiece lens and adjust the focus using the fine focus knob until you get a clear image of the cells.

Question 30

What is magnification?

Answer 30

How many times bigger the image you see is compared to the real object.

Question 31

What is the formula to calculate magnification?

Answer 31

Magnification = image/real size

Question 32

What are Carbohydrates used for?

Answer 32

They fuel your body

Question 33

What are Proteins used for?

Answer 33

Growth and the repair of damaged tissues.

Question 34

What are Lipids used for?

Answer 34

Storing energy which you use if your body runs out of carbohydrates and to keep you warm.

Question 35

What are Vitamins used for?

Answer 35

They keep many vital processes happening.

Question 36

What is Fibre used for?

Answer 36

Fibre helps food move through your digestive system and prevents constipation.

Question 37

What is Water used for?

Answer 37

60% of your body is water and is important for all the chemical reactions that take place in your body.

Question 38

What happens to your body if you don't have enough Vitamin C?

Answer 38

Problems occur with skin, joints and gums.

Question 39

What happens to your body if you don't have enough Calcium?

Answer 39

If not enough is consumed you can get osteoporosis which makes your bones less dense and likely to fracture.

Question 40

What solution is used to test for Sugar?

Answer 40

Benedict's solution

Question 41

What solution is used to test for Starch?

Answer 41

Iodine Solution

Question 42

What solution is used to test for Proteins?

Answer 42

Biuret solution

Question 43

How do you prepare a food sample?

Answer 43

Break a piece of food using a pestle and mortar. Put it in a beaker with some distilled water. Stir it to dissolve the food. Filter the solution to get rid of any solid bits of food.

Question 44

How do you to test for sugar?

Answer 44

Add Benedict's solution to the sample you want to test. Heat the mixture in a hot water bath. A positive result is if the solution goes from blue to green, yellow or red.

Question 45

How do you test for Starch?

Answer 45

Add iodine solution to the sample. A positive result is if the solution changes from browny orange to a blue black colour.

Question 46

How do you test for proteins?

Answer 46

Put 2cm cubed of your sample in a test tube. Add 2cm cubed of biuret solution to the sample and mix by gently shaking the tube. A positive result is if the solution changes from blue to purple.

Question 47

How do you test for Lipids?

Answer 47

Mix your sample with ethanol for a minute until it dissolves then pour the solution into water. A positive result is if a milky layer forms on top of the solution.