B2 organisation + enzymes

Question 1

what is a tissue?

Answer 1

a tissue is a group of similar cells working together to carry out a specific function. ( can be more than 1 type of cell)

Question 2

What is an organ?

Answer 2

An organ is a group of different tissues working together to perform a specific function.

Question 3

What is an organ system?

Answer 3

An organ system is a group of organs working together to carry out a specific function

Question 4

What is an Organism?

Answer 4

an organism is a group of organ systems working together to carry out a specific function?

Question 5

What are enzymes?

Answer 5

Biological catalysts produced by living things to break down molecules

Question 6

What are catalysts?

Answer 6

Biological catalysts which speed up a chemical reaction without being changed or used up in the reaction

Question 7

what factors can effect a catalysts rate of reaction?

Answer 7

Temperature and PH value

Question 8

What is the locke and key theory?

Answer 8

Only one substrate can fit into one enzyme, much like a locke and key

Question 9

what is an active site?

Answer 9

where a unique shape fits onto the substance involved in a reaction.

Question 10

What enzymes are there?

Answer 10

amylase, carbohydrase, protease, lipase

Question 11

what do lipids break down into?

Answer 11

glycerol + fatty acids

Question 12

what do carbonhydrates break down into?

Answer 12

glucose

Question 13

What does protein break down into?

Answer 13

amino acids

Question 14

What does starch break down into?

Answer 14

glucose

Question 15

describe the food test for starch

Answer 15

-Iodine as a reagent
- starting colour of orange,
-dark blue result if positive

Question 16

describe the food test for protien

Answer 16

-biuren as reagent
-starting colour of blue
-purple for positive result

Question 17

describe the food test for lipids

Answer 17

-Ethanol as reagent
-starting as clear
-cloudy for a positive result

Question 18

describe food test for sugars

Answer 18

-Benedict solution as reagent
-starting as blue
-brick red for positive result
-NEEDS TO BE HEATED

Question 19

Where is amylase found? (3 places)

Answer 19

saliva glands, small intestine and pancreas

Question 20

where is protease found? (3 places)

Answer 20

stomach, small intestine, pancreas

Question 21

where is lipase found? (2 places)

Answer 21

pancreas, small intestine

Question 22

How can you calculate the rate of reaction?

Answer 22

Rate of reaction= amount of time OR product used/ time
(/= divide by)