Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Science Biology

September-December

QuestionAnswer
Osmosis definition osmosis is the net movement of water molecules from an area of high water concentration to an area of low water concentration through a selectively permeable membrane
Osmosis- what's the membrane and what's solutes selectively permeable membrane= very small only let small through EG: let water through but not starch A solute can dissolve eg: sugar so a strong lots of Ribena = strong solvent strong
the function of Alveoli function= gas exchange eg blood gets rid of Carbon dioxide and gets Oxygen through a selectively permeable membrane
Breathing in = and breathing out = breathing in= inhalation breathing out= exhalation
Gases / %inspired Air / % expired Air Oxygen= In21- out16 Carbon Dioxide= In0.04- out 4 Nitrogen= In78- Out78 Water Vapour=In Varies- Out saturated
Welsh governments attempts to reduce smoking Raise buying age to 18 scary packaging Expensive Tv advertising No Passive smoking eg cars with kids or in public
Respiration IS NOT BREATHING its a Respiration is a CHEMICAL REACTION that takes place in EVERY LIVING CELL. It releases energy from glucose and in controlled by enzymes
Respiration releases energy from glucose for Muscle contraction muscle Growth Maintaining body temperature
Aerobic respiration Oxygen needed Glucose fully broken down EFFIECENT REACTION takes place in mitochondria
Anaerobic respiration oxygen not used glucose not broken down fully INEFFIECENT REACTION only carried out during VIGOUROUS exercise EG SPRINTING lactic acid waste builds up and can cause cramp
Word equations for respiration Aerobic= Glucose+ Oxygen--- ATP(energy)+Carbon Dioxide + water Anaerobic= Glucose--- ATP(small energy)+ lactic acid Breakdown of lactic acid= Lactic acid+ Oxygen--- Carbon Dioxide+ Water (caused by oxygen debt)
Chest Cavity/ The thorax Breathing in- intercostal muscles contract - ribcage moves up and out- the volume of the thorax increases - lower pressure in thorax
How are lungs protected from infection? The sticky mucus trap dust and bacteria and the cilia(tiny hair like structures) on the surface of cells that line the trachea bronchi and bronchioles sweep the sticky mucus to the back of the throat
Effect of smoking Lung cancer by tar chemicals in cigarettes paralyse cilia causes smokers cough emphysema which breaks down the walls of the alveoli causing shortness of breath
Created by: EX Sharpe
Popular Earth Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards