Human Bio Unit 1 - Water Flashcards by Jonathan Biss | Brainscape

Q

How is water lost from our body?

A

Sweat

Breathing

Urine

Tears

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Q

Percentage of our body mass that is water?

A

60%

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Q

How much water should you drink a day?

A

1.1-1.5 litres

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Q

Examples of diuretic drinks

A

Alcohol

Tea

Coffee

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Q

Effects of diuretic drinks on the body

A

Causes you to loose more water in the urine

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Q

Stages of producing drinking water

A

Leave to sediment particles

Pass through a sand filter

Pump Cl2 in it to kill bacteria

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Q

Bottled water

A

No bacterial limit

Can cost 1500X more then tap water

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Q

The allowed amount of bacteria allowed in tap water

A

2 bacteria per cm3

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Q

What does sweat contain?

A

Water

Urea

Salts

Small amounts of 2-methyphenol and 4-methyphenol

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Q

Name a way of replacing lost minerals

A

Isotonic sports drink

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Q

What are isotonic sports drinks made of?

A

Sugar

Salt

Flavourings

Water

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Q

Define isotonic

A

Same water potential as blood

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