Activities Unit 5 (Unidad 5 libro Santillana en Inglés)

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Apellidos

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For an adequate diet ...

we shouldn't care about the amount of energy we obtain from food

we should supply sufficient vitamins

Food rich in proteins should be the main source of our daily calories

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A balanced diet ....

Uses food from all the groups without paying atention to the proportions

Only includes food from groups 1, 2 and 4

Includes food from all the groups, being 4, 5 and 6 the most important ones

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In an adequate diet,

Fibre is not necessary because we cannot digest it

At least 15% kilocalories must be obtained from simple sugars

It is important to combine animal and vegetable proteins

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Regarding to disorders related with food,

In obesity, the organism transforms the excess glucids into fats

Anorexia is a disorder characterised by extreme thickness

Anorexia and bulimia develop the same way

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The fact that food gets rot ....

Is a natural process

Is due to the presence of environmental microorganisms

a and b are correct

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Bacteria are the responsible organisms for the appearance of mould

We can find bacteria only in certain types of food

Bacteria are responsible for the degradation process of food's proteins

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About the ways of conserving food

Smoking food is the most dangerous one

Ham is a good example of salting

Nowadays it is very usual to use drying techniques for food conservation at home

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The difference between freezing and refrigeration is that

Refrigeration is able to kill bacteria

Freezing slows down the metabolism of micro-organisms with higher efficiency than refrigeration

Both techniques have similar food preservation times

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Preservatives and additives are the same

Additives are added to food in big quantities, and have different functions

Common salt is one of the most ancient and commonly used additive

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Pasteurisation is the same as sterilisation

Pasteurisation and sterilisation are procedures that kill micro-organisms in food

Pasteurisation processes use heating at high temperatures to kill microbes

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Relating to food handling

People who handle food must take care of his personal hygiene

There is no need of certification for working in food industries

a and b are correct

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Pesticides and herbicides share the same chemical principle

Pesticides are harmful for environment, but harmless for human being

Using green houses we can improve the efficiency of our crops

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A transgenic

Is a bacteria, plant or animal whose DNA has been manipulated with DNA from other species

is a complex technique which changes the taste of food

is something related with science-fiction films

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About transgenics

They have so many disadvantages that their use in food industry is forbiden

They are so advantageous that they will soon replace traditional agriculture

They are still being studied to prevent negative side effects in human beings

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Base Metabolic Rate (BMR) is

The minimum amount of energy that we need to survive

The energy that we consume when we are totally at rest

1 and 2 are true

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What is a calorie?

Calculate the BMR of a 24 years-old woman who is: 164 cm height; 54 kg weigh.

Which are the main factors that should be taken into account when calculating BMR?

Why do people of same sex have diferent BMR depending on their ages?

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