Enzymes

Question 1

What are enzymes

Answer 1

Biological catalysts they speed up chemical reactions allowing them to proceed rapidly at relatively low temperatures while remaining unchanged

Question 2

An enzyme is only able to act on one type of substrate why is this

Answer 2

An enzyme is able to act on one type of substrate since this is the only substance whose molecules fit exactly into the enzymes active site

Question 3

( Degradation )

Salivary amylase breaks down substrate starch into what

Answer 3

Maltose

Question 4

Name a degradation reaction

Answer 4

Starch amylase maltose

———>

Question 5

Name a synthesis reaction

Answer 5

Glucose 1-phosphate potato
———
phosphorylase starch
———————>

Question 6

What factors may affect how fast or slow enzymes work

Answer 6

Ph and temperature

Question 7

Enzymes have a specific condition at which they are most affective what is this known as

Answer 7

Optimum conditions

Question 8

Name the 5 stages of enzyme activity

Answer 8

1) At low temperatures enzymes and substrate molecules move around slowly they rarely meet and activity is low
2) enzyme activity increases as temp increase
3) optimum temp for human enzymes are 37 degrees
4) at temps above 40degrees enzyme activity decreases
5) at high temps the shape of the active site is changed permanently halting all activity and enzyme is denatured

Question 9

When does an enzyme become denatured

Answer 9

When the shape of the active site irreversibly changed meaning it can no longer fit with its complementary substrate