Biology revision test

Created by

Kumaran Arulenthiran

Cards (13)

What are the 4 stages of the cell cycle? 
Chromosomes grow and replicate
Chromosomes line up in the middle and are pulled apart to either side of the cell
Nucleus divides 46 chromosomes
Cell membrane splits forming 2 identical cells
what are the advantages of a GTN? 
It‘s to prevent and treat chest pain caused by angina
What are the disadvantages of GTN? 
Red face
Feeling dizzy
Headaches
Weak/tired
What are the stages of CHD? 
Blood slows down
Heart doesn’t get enough oxygen + glucose
aerobic respiration decreases
lack of energy
heart cells begin to die
Explain the causes and symptoms of agina? 
Causes:
where the coronary arteries may become blocked by the build up of cholesterol
symptoms:
chest pain
breathless
lack of energy
Give three reasons why clinical trials are needed? 
for safety
to see if they are effective enough
to identify any side effects
How do viruses cause illness? 
They live inside the cell and replicate themselves and can lead to damaged cells
Describe how the measles vaccine helps a person to become immune to the measles pathogen? 
Inject dead or inactive cells into the body
Causes the immune system to produce antibodies that are specific to the pathogen
Antibodies destroy the pathogen
Memory cells copied
If a pathogen reenters the body antibodies will destroy it
Suggest 2 ways the spread of measles can be reduced?
Isolate at home

hygiene e.g regularly washing hands
Protein is broken down into… by…
Protease is released from…
Where are protein molecules broken down?
Protein molecules are broken down into amino acids by protease

protease is released from the stomach, pancreas, small intestine

broken down in the stomach and small intestine
Lipids are broken down into… and … by… 
Lipids are broken into fatty acids and glycerol by lipase
Lipase are released from… and… 
Lipase released from pancreas and small intestine
Broken down in the…
small intestine