Test Practice Y7 Flashcards
What are the 7 nutrients?
Carbohydrates(starch and sugars), proteins, fats, minerals,vitamins, firbre and water
Name the 3 types of enzymes
Carbohydrase,protease, lipase
What are the organs in the digestive system
Oesophagus,stomach,pancreas,small intestine, large intestine and anus.
What is diffusion
Diffusion is when a substance moves from a high concentration to a low concentration.
What is the independent variable
The variable that changes
What is the dependant variable
The variable that you measure
What is the control variable
The variable that does not change and stays consistent. What you keep the same to make it a fair test.
What is the test for starch and what is the postitive result?
Iodine and blue-black
What is the test for Glucose and what is the positive result?
Benedicts(+heat) and red( yellow and orange)
What is the test for Protein and what is the positive result?
Biuret and purple
What is the test for Fat and what is the positive result?
Filter paper and clear
What is the use of Carbohydrates
To provide energy
What is the use of protein
For growth and repair
What is the use of minerals?
Needed in small amounts to maintain health 
What is the use of fat(lipids)
To provide energy. Also, to store energy in the body and insulated against the cold.
What is the use of fibre
To provide roughage to help to keep the food moving though.
What is the use of water in the body?
Needed for cells and body fluids.
What are vitamins used for.
Needed in small amounts to maintain health.
Where does absorption occur and what does it have to increase surface area
It occurs in the small intestine and has micovilli to increase surface area
What are the 5 kingdoms that all life can be classified into?
Animals, plants,fungi,protoctists and bacteria
What is peristalsis?
It’s muscular contractions that push food down.
What is physical digestion
The breaking down of food particles into smaller particles, E.g Chewing ,stomach contractions
What is chemical digestion?
The breaking down of complex molecules into small molecules that your body can use it requires special protein enzymes
What is the function of the nucleus?
To hold the DNA
What is the use of mitochondria?
To store energy from food
What is the use of cytoplasm?
It makes up most of the cell and is where most chemical reactions happen.
What is the use of the cell membrane?
It chooses what come in and out of the cell.
What is the use of the vacuole?
It keeps the cell firm and contains cell sap.
What is the use of the chloroplast
It absorbs the light energy needed for photosynthesis.
What is the use of the cell wall.
To provide strength and support the plant
What is an enzyme and what is its use?
Enzymes are Proteins. In our bodies, they break down food from large complex molecules into small molecules. 
How do fungi get their nutrition and what is their mode?
By decomposition and the mode of nutrition is called saprotrophic nutrition.
What is the term pathogen mean?
A bacteria, virus or any microorganisms that can cause disease
What is the main features of bacteria(prokaryotes)
It has no nucleus, mitochondria or chloroplast
What is the main features of protoctists?
Only some types have a cell wall or chloroplast
What is the main features of fungi?
It doesn’t have chloroplasts
What is the main features of plants.
It has all of the things you could possibly have in a cell .
What is the main feature of animals.
They don’t have a cell wall or chloroplast
What is the word equation for respiration?
Glucose+oxygen —> carbon dioxide + water
What is the equation for photosynthesis?
Carbon dioxide +water —> oxygen + glucose
What if respiration?
Chemical reaction in every cell.
What is breathing?
Process of air moving in and out of the lungs
What is egestion?
Removal of faeces from the body
Exrection what is it?
Removal of waste produced by the body
Example of movement
Walking
Example of respiration?
Getting rid of the the reaction between glucose and oxygen
Example of sensitivity?
Detecting stimuli
Example of growth
Plant getting taller
Example of reproduction
Yeast multiplying
Example of excretion
Sweating
Example of nutrition
Getting protein from our food
Example of control
Maintaining your body temperature
What is in the respiratory system
Lungs, nose and trachea
What is in the urinary system
Uterus,kidney, bladder, urethra and liver
What is in the nervous system
Brain and spinal cord
What is in the circulatory system
Heart, blood, blood vessels
What enzymes are in the mouth
Carbohdrase
What enzymes are in the stomach
Protease
What enzymes are in the pancreas
Carbohydrase
What enzymes are in the large intestine
Protease and lipase
What enzymes are in the small intestine
All of them
What is a microbe?
Very small organism that can only be seen under a microscope
What is ingestion
Eating
What is digestion
Breaking down of food into smaller molecules
What is absorption
To take in/ to soak something up
Animal unicellular or multi
Multi
Plant unicellular or multi
Multi
Fungi unicellular or multi
Both
Bacteria unicellular or multi
Uni
Protoctists unicellular or multi
Uni
