active transport

Question 1

how is active transport different to diffusion?

Answer 1

goes against concentration gradient
requires energy from respiration

Question 2

describe the process of active transport within root hair cells?

Answer 2

take in mineral ions from soil
conc of mineral ions in root hair cell is greater then conc in soil
requires energy from mitochondria, so lots of mitochondria in cell

Question 3

describe the process of active process in the gut?

Answer 3

substances like glucose and amino acids need to move from gut to bloodstream
sometimes, conc of glucose and amino acids in blood stream is higher then gut
active transport is then required to move substances into the blood