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Biology > Unit 304 > Flashcards

Unit 304 Flashcards

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1
Q

What is the role of fibre ?

A

To bulk food

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2
Q

What is the role of carbohydrates?

A

Main source of energy

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3
Q

What is the role of water ?

A

To hydrate the body

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4
Q

What is the role of minerals and vitamins ?

A

To keep us healthy

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5
Q

What is the role of lipids ?

A

For energy and insulation

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6
Q

What is the role of protein ?

A

For growth and repair

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7
Q

Ingestion and digestion of food provides the elements for …

A

Growth
Repair
Energy
Reproduction

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8
Q

Different species of animals have different requirements for nutrients depending on ?

A

Individual variations
Weight
Sex
Environmental temperature

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9
Q

Physiological state is

A

Physical activity
Life stage
Reproductive state

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10
Q

The overall energy requirements of an animal are referred to as ?

A

Metabolism rate

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11
Q

What is basal metabolic rate (BMR) ?

A 
When an animal is at rest and not digesting food , energy required for maintenance of life to sustain vital body functions 
Heart beat 
Breathing 
Transmission of nerves impulse 
Maintenance of blood
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12
Q

Describe and explain Ectothermic

A

Cold blooded

Lower metabolic rate

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13
Q

Describe and explain Endothermic

A

Warm blooded

Higher metabolic rate

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14
Q

If iodine turns blue or black when added to the food what is present ?

A

Starch

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15
Q

If iodine stays orange when added to food what is not present?

A

Starch

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16
Q

When Benedict’s reagent is added to smushed food and placed in a water bath for 20 mins if it turns blue …

A

No sugar is present

17
Q

When Benedict’s reagent is added to smushed food and placed in a water bath for 20 mins if it turns orange …

A

Some sugar is present

18
Q

When Benedict’s reagent is added to smushed food and placed in a water bath for 20 mins if it turns red …

A

A lot of sugar is present

19
Q

What is cholesterol ?

A

Fatty substance

20
Q

Where is cholesterol made ?

A

Liver

21
Q

Why is cholesterol important in the body ?

A

Hormones
Bile
Cell membrane

22
Q

What are the two types of cholesterol ?

A

HDL and LDL

23
Q

Why is too much cholesterol bad ?

A

LDL causes artery blockage as plaque builds up and narrows arteries

24
Q

What does the amount of cholesterol depend on ?

A

Age
Sex
Weight

25
Q

Which cholesterol is good ?

A

HDL

26
Q

Which cholesterol is bad ?

A

LDL

27
Q

Which type of fat increase cholesterol?

A

Saturated fats

28
Q

How can we reduce cholesterol?

A

Eat less saturated fats

Biology (2 decks)

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