Surface Area And Volume Ratio

Question 1

Formula for surface area

Answer 1

B x w x 6

Question 2

Units for surface area

Answer 2

Cm2

Question 3

Formula for volume

Answer 3

B x w x h

Question 4

Units for volume

Answer 4

Cm3

Question 5

How do u make comparisons w surface area and volume

Answer 5

Make the volume equal to 1, so divide volume by itself

Question 6

What happens if size of an organism increases

Answer 6

If size increases, surface area to volume ratio decreases, therefore the diffusion distance increases so less oxygen reaches the cells for respiration, therefore organisms have evolved to have specialised exchange surfaces

Question 7

Name 3 specialised exchange surfaces

Answer 7

Alveloli
Villi
Kidney nephrons
Fish gills

Question 8

What is the metabolic rate

Answer 8

How quickly metabolic reactions happen in a given time

Question 9

What is the r/s between organism size and heat

Answer 9

Organisms with a high surface area to volume ratio (smaller) loose more heat