What 3 groups of enzymes are made in the pancreas?
Lipase, protease and amylase
2 of 25
What does bile do?
Emulsifiers lipids, giving them a bigger surface area, and neutralises stomach acid
3 of 25
What two monosaccharides make maltose?
Two alpha glucose molecules
4 of 25
What is the name if the bond in maltose?
Glycosidic bond
5 of 25
What is hydrolysis?
The splitting of a large molecule into smaller molecules by the addition of water
6 of 25
What two polysaccharides make up starch?
Amylose and amylopectin
7 of 25
What bonds are found in proteins between amino acids?
Dipeptide
8 of 25
Enzymes lower....?
The activation energy
9 of 25
What affects enzyme activity?
pH, temperature and substrate concentration
10 of 25
Which type of inhibition can be limited depending on the substrate concentration?
Competitive inhibition
11 of 25
What is the heaviest organelle in a animal cell?
The nucleus
12 of 25
What is facilitate diffusion?
Diffusion across a membrane which is helped by carrier proteins
13 of 25
What does active transport require?
Energy
14 of 25
Name a disadvantage of TEMs?
Must be thin specimen, black and white images, specimen must be dead
15 of 25
Pulmonary ventilation =
Tidal volume x ventilation rate
16 of 25
Cardiac output =
stroke volume x heart rate
17 of 25
What is osmosis
The movement of water across a partially permeable membrane from a high to low water potential
18 of 25
Name three risk factors associated with coronary heart disease?
High blood pressure, a diet high in cholesterol and smoking
19 of 25
What controls the cardiac cycle?
The SAN - the heart is myogenic
20 of 25
When you inhale what happens to the diaphragm?
It contracts and flattens
21 of 25
Image size =
Actual size of specimen X magnification
22 of 25
What is meant by herd immunity?
When the majority of people are immunised against a disease and the few that aren't are protected as they are unlikely to meet others who have not been vaccinated also
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Why might someone have antibodies injected straight into the bloodstream instead of a regular vaccination?
If the antibodies are needed urgently and there is no time to wait for antibodies to be produced?
24 of 25
What is an antigen?
A molecule found on the surface of a cell that can trigger and immune response
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What 3 groups of enzymes are made in the pancreas?
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