Biology Flashcards
What is the role of coronary arteries
To supply the heart muscles with glucose and oxygen to keep the heart contracting
What is a double circulatory system
Blood goes in the heart oxygenated and is pumped out deoxygenated
What is the function of a chloroplast
To photosynthesize, contain chlorophyll which absorbs light energy for photosynthesis
What is the function of the vacuole
To store water and waste removal
What is the function of mitochondria
Provides the cells with energy, breaks down sugars (e.g glucose) in aerobics respiration (provides the energy)
What cell is a prokaryote?
Bacteria cell
What does the plasmid do (bacteria)
Carries genes that offer antibiotic resistance
What is water concentration
The amount of water compared to other solutes that are dissolved in the water, e.g sugar or salt
What chemical is used to test for protein
Biurets
What colour change does biurets undergo
Blue → lilac/purple
What colour change does Benedicts solution undergo?
Blue→brick red (orange/green if less sugar is present)
What chemical is used to test for sugars
Benedicts solution
How do you test for simple sugars?
Add Benedicts solution and heat up in water bath around 75°c for 5 min6
What chemical do you use to test for lipids
Ethanol & water
What colour change does the lipid test undergo
Clear → cloudy/milky
How do you test for lipids
Add water to ethanol and shake
What side of the heart carries oxygenated blood?
Left
Where does the pulmonary vein come from
The lungs (oxygenated)