3.4 Speeding Up Digestion Flashcards Preview

GCSE Biology 2.3 Enzymes > 3.4 Speeding Up Digestion > Flashcards

Flashcards in 3.4 Speeding Up Digestion Deck (10)
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1

What happens in the body to create very acidic conditions in the stomach?

Glands in the stomach wall produce hydrochloric acid

2

What conditions do amylase and lipase work best in in the small intestine?

Slightly alkaline

3

Is bile acidic or alkaline?

Alkaline

4

How does bile help in digestion?

The bile is squirted into the small intestine and neutralises the stomach acid so the conditions are slightly alkaline, perfect for protease and lipase

5

Where is bile produced?

The liver

6

Where is bile stored?

The gall bladder

7

Name 2 ways that bile helps speed up digestion?

•it makes the small intestine alkaline so protease and lipase works well
•it increases the surface area of the food to make the enzymes work better

8

What is activation energy?

The minimum energy required to start a reaction by colliding the molecules together with enough energy

9

How do enzymes speed up a reaction?

They decrease the activation energy so the reaction happens at a greater rate

10

What conditions in the stomach do protease enzymes work best?

Acidic conditions