Science - Humans as Organisms

Question 1

Carbohydrates

Answer 1

Provide energy and repairs skin.

Question 2

Protein

Answer 2

For growth and repair of body tissues

Question 3

Fat/Lipids

Answer 3

To provide energy and to keep your body from being cold.

Question 4

Minerals

Answer 4

Needed to make red blood cells and needed for health.

Question 5

Vitamins

Answer 5

Needed to maintain health, bind cells together and repairs skin.

Question 6

Fibre

Answer 6

To keep the food moving through the gut, for a healthy digestive system.

Question 7

Water

Answer 7

Needed for cells and body fluids

Question 8

Food Test: Starch

Answer 8

Add iodine, colour: Orange, colour change: blue/black

Question 9

Food Test: Protein

Answer 9

Add biuret, colour: light blue, colour change: purple

Question 10

Food Test: Glucose

Answer 10

Add benidict solution, colour: orange, colour change: brick red

Question 11

Food Test: Fats/Lipids

Answer 11

Add ethanol and shake, colour: clear, colour change: cloudy white

Question 12

Obesity Effects

Answer 12

Arthuritis- inflammation of the joints
Diabetes- not being able to control blood sugar levels (type 2)
High Blood Pressure and Disease

Question 13

Starvation Effects

Answer 13

Malnutrition- lack of one or more food groups
Slow Growth
Fatigue
Poor resistance to infections
Irregular Periods

Question 14

Disease: Scurvy

Answer 14

Lack of Vitamin C, treatement: Vitamin C supplements

Question 15

Disease: Rickets

Answer 15

Lack of Vitamin D, tretement: Vitamin D supplements

Question 16

Disease: Anaemia

Answer 16

Lack of Iron or B12, treatement: Iron supplements

Question 17

Explain the Digestive System

Answer 17

The food enters your mouth and grinds it into small pieces, then it goes down your oesophagus and into your stomach, then into your small intestines flowing through to your large intestines ending up in your rectum.

Question 18

Acids?

Answer 18

Acids are found in your stomach to kill of any unwanted/not needed bacteria.

Question 19

Enzymes?

Answer 19

Enzymes are a cruical part of the digestive system, they break the bonds between amino acids freeing them for absorption and into your blood stream, this works best in acidic conditions.

Question 20

Small Intestine?

Answer 20

Nutralises food

Question 21

How is the oesophagus adapted?

Answer 21

The oesophagus is a long tube the means all the food can get down your throat easily and quickly

Question 22

How is the stomach adapted?

Answer 22

The stomach is adapted for the acids so they can kill all the bad bacteria

Question 23

How is the small intestine adapted?

Answer 23

The small intestine looks like it is shrivelled up, this is because it makes it easier for the bile to nuetralise the food

Question 24

Different types of enzyme

Answer 24

Amylase
Protease
Lipise

Question 25

Amylase?

Answer 25

Breaks down starch and digests carbohydrates

Question 26

Protease?

Answer 26

Breaks down protein, digests amino acids

Question 27

Lipise?

Answer 27

Breaks down fats/lipids, digests fatty acids and glycerol