B2

Question 1

What are cells?

Answer 1

The basic building blocks of all living organisms

Question 2

What is a tissue?

Answer 2

Group of cells with a similar structure and function.

Question 3

What are organs?

Answer 3

They are aggregations of tissues performing specific functions.

Question 4

What are organs organised into?

Answer 4

Organ systems- which work together to form organisms

Question 5

What are the 3 main nutrients found in food?

Answer 5

-Carbohydrates
-Fats/ lipids
-Protein

Question 6

Why do the nutrients found in food have to be digested?

Answer 6

They are too large to be entered into the blood steam.

Question 7

What is amylase an example of?

Answer 7

Carbohydrase

Question 8

What does a carbohydrase do?

Answer 8

Breaks down starch.

Question 9

Where is amylase produced?

Answer 9

• Salivary glands( mouth)
  -The pancreas
  -The small intestine

Question 10

What does protease do?

Answer 10

Breaks down proteins.

Question 11

What do proteins break down into?

Answer 11

Amino acids

Question 12

What does carbohydrates break into?

Answer 12

Starch

Question 13

Where is protease produced?

Answer 13

• The stomach (aka pepsin)
• The pancreas
  -The small intestine

Question 14

What does lipase do?

Answer 14

Brakes down lipids

Question 15

What does lipids brake down into?

Answer 15

Glycerol/ fatty acids

Question 15

Where is bile produced?

Answer 15

Liver

Question 16

Complete
Bile is stored in the —– before released into the—-.

Answer 16

Gall bladder
Small intestine

Question 17

What does bile do to the hydrochloric acid in the stomach?

Answer 17

Neutralises acid.

Question 18

What conditions do the enzymes in the small intestine work best at?

Answer 18

Alkaline conditions

Question 19

Bile —– fat?
What does this mean and how does it help?

Answer 19

Emulsifies
Breaks down fa into tiny droplets to create a larger surface area: volume ratio which speeds up digestion