Respiration & Breathing Flashcards
How many life processes do all living things carryout?
8
What does the pneumonic MRS GRENI stand for?
Movement, Reproduction, Sensitivity, Growth, Respiration, Excretion, Nutrition, Control of Internal environment.
Which life process produces energy for most other life processes?
respiration
Respiration takes places in which part of every cell (both plant and animal)?
Mitochondria
Energy is contained in which food molecule/ covalent compound?
Glucose
What is the the process which releases the energy this molecule?
Respiration
Put these steps of energy release in order:
a) Glucose diffuses from blood into the cell
b) Food is digested
c) Glucose is used by mitochondria in respiration
d) Glucose is absorbed through the wall of the small intestine into the bloodstream.
e) Blood delivers glucose to all of the cells.
b, d, e, a, c.
Do muscles have more or less mitochondria than most cells and why?
Yes they have more mitochondria, as they require lots of energy for movement.
What is the name of this process?
Glucose + Oxygen —> Carbon Dioxide + Water + Energy
Aerobic respiration
What is the process of Anaerobic Respiration?
Glucose —> Lactic acid + Energy
Is Anaerobic respiration more or less efficient than Aerobic respriation?
Less
When do bodies respire anaerobically?
When the body cannot get enough oxygen to the muscles cells quickly enough - e.g. during intensive exercise.
What colourless liquid is used to test for the presence of Carbon Dioxide (CO2)?
Limewater
When we blow through a tube/ straw into limewater, what change is seen
the clear liquid becomes milky due to the presence of carbon dioxide in the exhaled breath.
What is used to test concentration of carbon dioxide?
Hydrocarbonate indicator
which colour is seen in normal air tested with hydrocarbonate indicator?
Pink
what does a yellow result with hydrocarbonate indicator tell us?
There is a greater concentration of carbon dioxide than in normal air.
What colour would be seen in a hydrocarbonate indicator test of gas with a lower concentrate of carbon dioxide than normal air?
Purple
What do we commonly call the anaerobic respiration seen in yeast?
Fermentation
Is the anaerobic respiration seen in yeast the same process as anaerobic process seen in animals?
No
Describe anaerobic process in yeast in terms of input and output
Glucose —> Carbon Dioxide + Ethanol + Energy
Fill in the missing words in this description of the Human Circulatory System
Substances transported via _____, e.g. glucose & ______, taken to cells for ________, waste products e.g. _______ transported to away to be ________.
Blood, oxygen, respiration, carbon dioxide, excreted.
Where is the heart located in the human body?
behind and to the left of the breastbone.
What is name of the thick muscular wall of the heart?
Cardiac muscle.
Is the heart a weak or strong muscle?
Very strong - continuously working.