Bio - 5.1 Flashcards
1
Q
enzymes
A
- binded to one particular substrate
- break down substances bigger to smaller
- function as a biological catalysts
2
Q
properties of enzymes
A
- all enzymes are protein
- catalysts
- specific
- work best at a particular temp or pH
- reusable
3
Q
active site
A
- region on an enzyme that binds to a substrate during a reaction
4
Q
amylase
A
substrate = starch
products = maltose
5
Q
maltase
A
substrate = maltose
product = glucose
6
Q
protease
A
substrate = protein
product = amino acids
7
Q
lipase
A
substrate = fats
products = fatty acid + glycerol
8
Q
cellulase
A
substrate = cellulose
products = glucose
9
Q
lock and key mechanism
A
- substrate will bind into the active site
- enzyme substrate complex
- enzyme will break down larger molecule to smaller molecule
10
Q
catalysts
A
- substances that speeds up the rate of chemical reaction
11
Q
pH and enzyme activity
A
- rate of reaction depends on optimum pH
- change is pH (too high/low) alters the shape of active site of enzymes, causing them to denature
12
Q
temperature and enzyme activity
A
- temperature rises => enzyme and substrate molecules gain more kinetic energy => move faster
- rate of reaction will increase until optimum temperature
- temp is too high the enzyme will denature
13
Q
benedicts test
A
REDUCING SUGAR
- blue = no sugar
- red = sugar
14
Q
biuret test
A
PROTEIN
- purple: protein is present
- blue: protein isn’t present
15
Q
iodine test
A
STARCH
- brown: no starch
- black: starch
