Date: November 16, 2016 Aim #25: How can we compare active and passive transport? HW: Daily Review of class notes. Castle Learning GRADED QUIZ due Thursday.

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Date: November 16, 2016 Aim #25: How can we compare active and passive transport? HW: Daily Review of class notes. Castle Learning GRADED QUIZ due Thursday by 10:30PM Unit 3 Test Tuesday 11/22 (period 5) Wednesday 11/23 (period 1) Do Now:

Aim #25: How can we compare active and passive transport?

Cell Transport ABSORB DISTRIBUTE

The Cell Non-living cell surroundings Secrete chemicals (hormones, neurotransmitters, enzymes, antibodies…) Living cell Secrete Metabolic wastes (CO2, urea) Take in: O2, end products of digestion, minerals, chemical messengers (hormones & neurotransmitters)

Do all things get through the cell membrane? Water Molecules What is concentration? SELECTIVELY PERMEABLE

Does this picture illustrate a concentration gradient? Yes… there is a higher concentration on the right side than the left

How does a rollercoaster work? HIGH LOW LOW

When will he need energy? Should I go against the gradient or down the gradient HIGH http://programs.northlandcollege.edu/biology/Biology1111/animations/transport1.html LOW LOW

1) What are the two types of transport? ACTIVE TRANSPORT PASSIVE TRANSPORT HIGH LOW LOW

2) What are characteristics of Active Transport? Energy required Against concentration gradient From low to high LOW HIGH

3) What are characteristics of Passive Transport? No energy required Moves along/down concentration gradient From high to low LOW HIGH

Can you tell the difference?

Low to High Concentration Would you need energy? Yes… it is going from Low to High Concentration

4) What are the three types of passive transport? a) Diffusion- movement of O2 and CO2 What direction would the materials move in?

4) What are the three types of passive transport? b) Facilitated Diffusion- transport proteins help move materials from high to low concentration glucose

4) What are the three types of passive transport? c) Osmosis- diffusion of water

5) What are examples of Active Transport? Contractile vacuole- used to pump out water from freshwater organisms like paramecium

Active vs. Passive Transport Active Transport Passive Transport Energy Required Direction Types YES NO LOWHIGH HIGHLOW Diffusion, Facilitated Diffusion, Osmosis Contractile Vacuole