organisation

Question 1

what is a tissue?

Answer 1

a group of cells

Question 2

what is an organ?

Answer 2

a group of tissues

Question 3

what is a system?

Answer 3

a group of organs

Question 4

what is an organism?

Answer 4

a group of systems

Question 5

what is an organelle in an animal and a plant?

Answer 5

animal- nucleus
plant- chloroplast

Question 6

what is a cell in an animal and a plant?

Answer 6

animal- muscle cell
plant- pallisade cell

Question 7

what is a tissue in an animal and a plant?

Answer 7

animal- muscle
plant- pallisade mesophyll

Question 8

what is an organ in an animal and a plant?

Answer 8

animal- heart
plant- leaf

Question 9

what is an organ system in an animal and a plant?

Answer 9

animal- cardiovascular system
plant- branch

Question 10

what is an organism in an animal and a plant?

Answer 10

animal- human
plant- oak tree

Question 11

what does muscular tissue in the stomach do?

Answer 11

churns the food

Question 12

what does glandular tissue in the stomach do?

Answer 12

excretes juices

Question 13

what does epithelial tissue in the stomach do?

Answer 13

covers the inside and outside of the organ

Question 14

what do lungs exchange?

Answer 14

gas

Question 15

what do small intestines exchange?

Answer 15

digested food into blood

Question 16

what do kidneys exchange?

Answer 16

filter the blood and exchange dissolved substances in and out

Question 17

what is the substrate and product for protease?

Answer 17

substrate- protein
product- amino acid

Question 18

what is the substrate and product for lipase?

Answer 18

substrate- lipids/fats
product- fatty acid

Question 19

what is the substrate and product for amylase?

Answer 19

substrate- starch
product- glucose

Question 20

what is the function and product of the mouth?

Answer 20

breaks down food into smaller pieces to fit down the throat- amylase

Question 21

what is the function and product of the oesophagus?

Answer 21

the tube that connects your mouth to the stomach- no chemicals

Question 22

what is the function and product of the stomach?

Answer 22

container for food where it is broken down- protease

Question 23

what is the function and product of the liver?

Answer 23

helps digestion by making a chemical to neutralise stomach acid- bile

Question 24

what is the function and product of the gall bladder?

Answer 24

storage for the liver, it holds bile until it is ready to be released into small intestine- no chemicals

Question 25

what is the function and product of the pancreas?

Answer 25

makes new enzymes to help digestion in the small intestine- lipase and protease

Question 26

what is the function and product of the small intestine?

Answer 26

12 metres long and absorbs nutrients from food uses chemicals elsewhere- no chemicals

Question 27

what is the function and product of the large intestine?

Answer 27

holds faeces (poo) until you are ready to go to the toilet and absorbs water from poo- no chemicals

Question 28

what is the function and product of the anus?

Answer 28

where faeces (poo) leaves your body- no chemicals

Question 29

what is an enzyme?

Answer 29

they speed reactions by lowering the activation energy

Question 30

what is a catalyst?

Answer 30

they increase the rate at which something breaks down

Question 31

what's a substrate?

Answer 31

what the enzyme breaks down

Question 32

what is the food test for starch and what colour does it change?

Answer 32

iodine- blue/black

Question 33

what is the food test for protein and what colour does it change?

Answer 33

biuret- purple

Question 34

what is the food test for sugar and what colour does it change?

Answer 34

benedicts (heated)- brick red

Question 35

what is the food test for fats and what colour does it change?

Answer 35

emulsion with ethanol- cloudy

Question 36

what pH does protease work at its optimum?

Answer 36

1-2

Question 37

what pH does amylase work at its optimum?

Answer 37

6-7

Question 38

what pH does lipase work at its optimum?

Answer 38

11-12

Question 39

what temperature do enzymes work best at?

Answer 39

body temperature - 37 degrees

Question 40

how are fats broken down?

Answer 40

they are broken down by lipase