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35 Cards in this Set

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What are the 7 characteristics for a living organism?

Movement


Respiration


Sensitivity



Growth


Reproduction


Excretion


Nutrition

M


R


S



G


R


E


N

Give 3 reasons why we need to eat food.

1. As a fuel to release energy.


2. To provide materials that our body need for growth.


3. To keep us healthy.

Sport


Child to adult


Old age

A healthy diet consists of 7 key components. What are they?

Carbohydrate


Proteins


lipids


minerals


vitamins


fibre


water

C


P


L


M


V


F


W

Give sources of carbohydrates in our diet and what is the purpose of them?

Sources: pasta cereals potatoes


Use: to provide energy

Good for running...

Give good sources of protein in our diet and what is the purpose of them?

Sources: meats pulses and fish


Use: Build new tissue


Repair damaged tissues

Strength+muscles

Give good sources of lipids in our diet and what is the purpose of them?

Sources: certain oils dairy products nuts and fish



Use: provide energy


Insulate body

Lipids=fat...people

Give good sources of minerals in our diet and what is the purpose of them?

Sources: fruit vegetables fish and milk.



Use: Helps to release energy from food.


Good bone and teeth development.


Makes red blood cells.

Similar to vitamins

Give good sources of vitamins in our diet and what is the purpose of them?

Sources: fresh fruit and vegetables.



Use: helps the body to work.




Vitamin A: vision


Vitamin B: energy production


Vitamin C: healthy skin


Vitamin D: helps teeth and bones

Good things...


Eyes


Running


Body


Calcium

Give good sources of fibre in our diet and what is the purpose of them?

Sources: fresh fruits vegetables and wholegrain cereals.



Use: Makes our waste easier to push through the digestive system.

Good things...


Opposite of constipation

Give good sources of water in our diet and what is the purpose of them?

Sources: Water and other drinks*


Use: Digesting food


Cooling us down


Transporting materials


Maintaining fluid levels




* some drinks aren't as good and some are just bad.

Its in the name...


Food


Sport


Resources


Necessities

What would happen if fibre was put in water?

Nothing


Its insoluble (doesn't dissolve)

Trick question

What is peristalsis?


What food group helps it?

When tubes squeeze themselves and push the food along.


Fibre makes peristalsis easier.

Opposite of constipation

What is the test for simple sugars?


What would show a positive test?

Benedict's solution then add heat.


Positive colour is brick red/orange.

Beny-burns-bricks...

What is the test for starch?What would show a positive test?

Iodine solution


Positive colour blue-black

Blue eye...

What is the test for fat?What would show a positive test?

Chop it into small bits, add ethanol, add water.


Positive test shows oil drops at surface.

Ethan drinks drinks and eats fatty foods...

What is the test for protein?What would show a positive test?

Biuret reagent


Positive colour is pale lilac.

Agent B likes a mixture of blue and red...

List the most efficient to the least on energy content on sugar, oil, fat

Oil fat sugar

Good for long distance

What is aerobic respiration?

The process in which energy is released from food when oxygen is available

Why do you have less energy underwater?

What is the equation for aerobic respiration?

Can't underwater+must eat---I panting+need bath+why its I important to eat. <-----I

What are the 7 things which have to be labeled on food products?

Look at some packaging, what would you want to know?

Name 2 minerals needed for a healthy diet and what are they used for?

Calcium - bone, teeth and nail growth


Iron - transporting oxygen and CO2

Milk and metal

What is digestion?

The breakdown of complex large insoluble molecules, into smaller soluble molecules that can be absorbed.

BIG to small


So that...

What are the 2 types of digestion?

Physical and chemical

Teeth and stomach

What is physical digestion?

Pushing, squashing, clamping, touching...

What is chemical digestion?

Acids, gland, juices...

Name the places.

Name the 4 types of teeth?

Molar, pre molar, canine, incisor

M, pm, c, i

What is the job of the molars?

Chewing and grinding

Large bumpy surface

What is the job of the pre molars?

Crushing food

Similar but less strong then molars

What is the job of the canines?

Holding food

Tigers

What is the job of the incisors?

Cutting food

Thin like a knife

What is an enzyme?

Saliva

What is the enzyme and final product for breaking down large carbohydrates/starch?

Enzyme: carbohydrate/amylase


Final product: simple sugars/glucose

Sounds like it...


Sport...

What is the enzyme and final product for breaking down lipids?

Enzyme: lipase


Final product: fatty acids+glycerol

Sounds like it...


Fat energy... Syrup?

What is the enzyme and final product for breaking down proteins?

Enzyme: protease


Final product: Amino acids

Sounds like it...


Sounds call acid...