Activate 2 Biology Chapter 1 1.1-1.8

Question 1

Name the seven nutrients.

Answer 1

Carbohydrates, lipids, proteins, vitamins, minerals, water, and fibre.

Question 2

To remain healthy you must eat a __. This means eating food containing the __ in the _ amounts.

Answer 2

Balanced diet, right nutrients, correct.

Question 3

What do lipids do?

Answer 3

They provide you with a store of energy, keep you warm, and protect organs.

Question 4

Why do you need vitamin A?

Answer 4

To maintain good eyesight.

Question 5

Why do you need vitamin D?

Answer 5

For healthy teeth and bones.

Question 6

How do you test for starch?

Answer 6

Using iodine.

Question 7

How do you test for lipids?

Answer 7

Using ethanol.

Question 8

How do you test for sugar?

Answer 8

Using Benedict’s solution.

Question 9

How do you test for protein?

Answer 9

Copper sulfate and sodium hydroxide.

Question 10

What is the color change if starch is present?

Answer 10

Blue-Black

Question 11

What is the color change if lipids is present?

Answer 11

Cloudy.

Question 12

What is the color change if sugar is present?

Answer 12

Can be yellow, orange or red.

Question 13

What is the color change if protein is present?

Answer 13

Purple.

Question 14

Where does your energy come from?

Answer 14

Your food.

Question 15

Why is it unhealthy to be underweight?

Answer 15

Because you often suffer from health problems, such as a poor immune system. Lack of energy, and are likely to suffer from a lack of vitamins or minerals.

Question 15

Why is it unhealthy to be overweight?

Answer 15

Because you have an increased risk of heart disease, storke, diabetes, and some cancers.

Question 16

What are vitamin and mineral deficiencies?

Answer 16

This is when a person doesn’t have enough of a certain vitamin or mineral.

Question 17

What is the condition when you have a deficiency of Vitamin D?

Answer 17

Rickets.

Question 18

What is the digestive system?

Answer 18

It is a group of organs that work together to break down food.

Question 19

What happens during digestion?

Answer 19

Big molecules are digested into smaller nutrient molecules.

Question 20

Name the structure of the digestive system.

Answer 20

Mouth-Gullet-Stomach-Small intestine-Large intestine-Rectum-Anus.

Question 21

What happens in the rectum?

Answer 21

Feces are stored here until they leave the body.

Question 22

What happens in the gullet?

Answer 22

Food passes down this tube.

Question 22

What happens in the stomach?

Answer 22

Food is mixed with digestive juices and acids.

Question 23

What happens in the mouth?

Answer 23

Food is chewed and mixed with saliva. Teeth help to breat the food into smaller chunks.

Question 24

What happens small intestine?

Answer 24

Digestive juices from the liver and pancreas are added and digestion is completed. Small molecules of nutrients pass through the intestine wall into the bloodstream. The small intestine also contains villi, which stick out of the wall and give it a big surface area so that they can absorb food molecules faster.

Question 25

What happens in the large intestine?

Answer 25

Water passes back into the body, leaving solid waste of undigested food called feces.

Question 26

What happens at the anus?

Answer 26

Where feces are passed out of the body.

Question 27

What are enzymes also known as and what do they do?

Answer 27

Biological catalysts, and they speed up digestion without being used up.

Question 28

What does carbohydrase break down and what does it break down into? Where is it found?

Answer 28

Carbohydrates, sugar molecules. Mouth, stomach, and small intestine.

Question 29

What does lipase break down and what does it break down into? What is it helped by? Where is it found?

Answer 29

Lipids, fatty acid and glycerol. Bile. Small intestine.

Question 30

What does protease break down and what does it break down into? Where is it found?

Answer 30

Protein, amino acids. Stomach, small intestine.

Question 31

Name the two types of drugs.

Answer 31

Recreational and medicinal drugs.

Question 32

Name 2 recreational drugs.

Answer 32

Ectasy, and Cannabis etc.

Question 33

Name 2 medicinal drugs.

Answer 33

Paracetamol and antibiotics.

Question 34

True or False, recreational drugs are perscribed by doctors.

Answer 34

False.

Question 35

Do medicinal drugs benefit your health?

Answer 35

Yes.

Question 36

What does alcohol contain?

Answer 36

Ethanol.

Question 37

What is ethanol?

Answer 37

It is a depressant.

Question 38

What does depressant mean?

Answer 38

It slows down the body’s reactions.

Question 39

List 4 long term effects of alcohol.

Answer 39

Stomach ulcers, heart disease, brain damage, and liver damage.

Question 40

Name the negative effects of nicotine?

Answer 40

This narrows the blood vessels and the heart beats faster. This drug also speeds up the nercous system.

Question 41

Name the negative effects of nicotine?

Answer 41

A sticky black material that collects in the lungs. It irritates and narrows the airway, and some of the chemicals contain cause cancer.

Question 42

What are the negative effects of carbon monoxide?

Answer 42

A poisonous gas that stops the blood from carrying as much oxygen as it should.

Question 43

Name what smoking also does.

Answer 43

It damages the cilia.

Question 44

What can smoking cause?

Answer 44

Heart disease- Higher blood pressure, emphysema, respiratory infections, teeth turns yellow.