cell transport

Question 1

define diffusion

Answer 1

the movement of particles from high concentration to lower concentration

Question 2

define osmosis

Answer 2

diffusion of water from a low concentration to a high concentrated solution through a partially permeable membrane

Question 3

define active transport

Answer 3

movement of particles from low concentration to a high concentration

Question 4

is energy required in diffusion

Answer 4

no

Question 5

is energy required in osmosis

Answer 5

no

Question 6

is energy required in active transport

Answer 6

yes energy released by respiration

Question 7

how does concentration affect diffusion

Answer 7

steeper the concentration gradient the faster the rate of diffusion

Question 8

how does temperature affect diffusion

Answer 8

higher the temperature the faster the rate of diffusion

Question 9

how does surface area of the membrane affect diffusion

Answer 9

larger surface area = faster rate of diffusion

Question 10

describe the adaptations of the villi

Answer 10

network of capillaries
large surface area
thin wall
good blood supply

Question 11

describe the adaptations of the alveoli

Answer 11

network of capillaries provides good blood supply
large surface area
moist
one cell thick

Question 12

describe the adaptations of fish gills

Answer 12

stacks of thin filaments
large surface area
network of capillaries

Question 13

describe the adaptations of root hair cells

Answer 13

lots of mitochondria
large surface area