Term 1 (science) Flashcards
Photosynthesis:
Photosynthesis
(give definition)
The process by which plants make their own food.
Photosynthesis:
Where does photosynthesis mainly take place and why
In leaves - because leaves cotain chlorophyll
Photosynthesis:
What does chorophyll do
Makes plants green and absorbs suns energy
Photosynthesis:
What is needed for photosynthesis to take place
Carbon dioxide, water, sunlight
Photosynthesis:
Where are the substances taken in through
(substances = water, carbon dioxide, sunlight)
Roots
Photosynthesis:
What is the plant’s foods called
Glucose
Photosynthesis:
Glucose
-is what
Type of sugar that provides plants with all the energy they need
Photosynthesis:
How do plants breath, what do they breath in
(is this the same to humans/animals)
They breath through cells called stomata - Take in carbon dioxide
Photosynthesis:
What do they breath out - is this the same to humans/animals
Breath out oxygen for humans/animals
Photosynthesis:
What do plants store their excess glucose as and where
Starch - fruit, leaves, roots, stems or seeds
Photosynthesis:
Iodine
-is what
Used to test for starch. Special chemical that changes colour when in contact with starch.
Photosynthesis:
Oxygen - coming from - going
Leaf - into air
Photosynthesis:
Sunlight - coming from - going
Sun - into leaf (chlorophyll)
Photosynthesis:
Sugar - coming from - going
Leaf - throughout plant
Photosynthesis:
Starch - coming from - going
Roots, fruit, seeds - to roots to stem to leaves
Photosynthesis:
Carbon dioxide - coming from - going
Outside of plant - into leaf
Nutrients in foods:
Nutrients
(definition)
Special substance found in foods
Nutrients in foods:
Is needed in body - why
Important parts of food that keep the body healthy and provide it with energy
Nutrients in foods:
What contains nutrients
Everything eaten
Nutrients in foods:
How are foods grouped
According to their functions in the body and the main nutrients they supply
Nutrients in foods:
4 main food groups
Carbohydrates, protein, fats & oils, vitamins & minerals
Food groups:
Carbohydrates gives us what
Gives us energy for growth and movement, keeps body warm
Food groups:
Main 2 types of carbohydrates
Sugar and starch
Food groups:
How much of our food contains carbohydrates
80%
Food groups:
Sugar - found in…
In fruits or products such as jam/cooldrinks
Food groups:
Sugar - gives us…
Gives our bodies quick energy - doesn’t have important nutrients.
Food groups:
Starch - found in..
In bread, pasta & potatoes
Food groups:
Starch - gives us.. & how
Releases energy into bodies slowly so it lasts longer
Food groups:
Most common carbohydrate in our diets
Starch
Food groups:
Protein helps with
Helps body grow+repair itself and helps immune system fight infections
Food groups:
Protein - makes up part of…
The red blood cells
… - mainly made of proteins
Muscles & organs
Food groups:
Protein makes up many parts of our body such as …
Bone, hair, skin, nails
Food groups:
Red blood cells
-do what
Carry oxygen around body. They travel from lungs delivering oxygen to all diffent parts of body
Food groups:
Immune system
-does what
Protects body from germs/bacteria. If you do sick it fights the infection
Food groups:
It is important to get protein from a variety of foods - why
It repair any damaged tissue and helps muscles/organs grow
Food groups:
Protein must be eaten in correct proportions - why
If too much is eaten, the body will store it as fat
Food groups:
Fats and oils
-does what
Foods for storing energy, insulation, protection
Food groups:
Fats & oils - gives how much energy
More than any other food type
Food groups:
Body fat
-does/is what
Forms protective layers inside body, keeping body warm - protects organs/nerves
Food groups:
Oils
-is what - provides what
Liquid fats made from plants/fish. Provides important nutrients
Food groups:
Healthy oils + fats
-are what
Made of plants+fish. Much healthier cause they provide more nutrients
Food groups:
What are examples of healthy Oils & fats
Avo / sardines
Food groups:
Unhealthy fat
-called what
Saturated fats
Food groups:
Unhealthy fats (&oils)
-are/do what
Mainly from animal products. Raises cholesterol levels in the blood
Examples of saturated fats
Too much butter/ red meat
Food groups:
Vitamins + minerals
-foods for …
For building bones, teeth, mantaining immune system, good eyesight
Food groups: (important vitamins)
Vitamin A
-function
Helps see at night, helps fight body infections
Food groups: (important vitamins)
Vitamin B
-function
Makes energy, proteins + red blood cells
(and many other functions)
Food groups: (important vitamins)
Vitamin C
-function
Helps fight infections
Food groups: (important vitamins)
Vitamin D
-function
Helps make stong bones
Food groups: (important vitamins)
Vitamin E
-function
Protects the skin
Food groups: (important vitamins)
Vitatmin K
-function
Helps stop bleeding
Food groups: (important minerals)
Culcium
-function
Makes teeth/bones strong
Food groups: (important minerals)
Iron
-function
Helps make red blood cells
Food groups: (important minerals)
Zinc
-function
Helps you grow
Food groups: (essential minerals)
Sodium
-is/does what
Makes sure the amount of blood + blood pressure stays the same, makes sure that every part of body has enough water
Food groups: (essential minerals)
Sodium - keeps what working
Keeps muscles + nerves working properly
Food groups: (essential minerals)
Sodium rich foods:
Bacon, anchovies, beetroot
Food groups: (essential minerals)
Potassium - responsible for
Taking care of cells, makes sure correct amount of water + minerals go into each cell
Food groups: (essential minerals)
How does potassium help our muscles
Helps make muscles contract so we can move our bodies
Food groups: (essential minerals)
Potassium rich foods:
Bananas, avo, guava
Balanced diets:
Diet
-definition
Selection of different foods that a person/animal eats everyday.
Balanced diets:
In order to have a healthy diet it is important to eat …
-carrry on sentence
The right amount of food from each food group
Balanced diets:
Grains
(how many servings per day)
6-10 servings /day
(/day = per day)
Balanced diets:
Dairy
(how many servings per day)
2 servings per day
Balanced diets:
Fats & oils
(how many servings per day)
15-20g per day
Balanced diets:
Proteins
(how many servings per day)
2 servings per day
Balanced diets:
Vegtables & fruit
(how many servings per day)
5-6 servings /day
(/day = per day)
How fibre benefits the body:
How does fibre benefits the body
Constipation, diabetes, heart problems
How fibre benefits the body:
Constipation
(how fibre helps it)
Keeps water in digestive system so food can pass through easily
How fibre benefits the body:
Diabetes
(how fibre helps it)
Slows down how quickly sugar is absorbed into body