Mind Stretcher – 12/8/17 Particles/molecules In diffusion, __________move from areas of ________ to ________ concentration. In osmosis, _______ molecules move from areas of __________ to _________ concentration. high low water high low Start Gummy bear lab with

“Active Transport Notes”

Objective of the Unit Explain that cells need to maintain homeostasis Explain passive transport and diffusion Define the process of osmosis Explain the process of active transport and the role of ATP Explain the processes of endocytosis and exocytosis

Active Transport Requires Energy in form of ATP made by mitochondria). Moves against the concentration gradient – (LOW to HIGH) Two types: Endocytosis & Exocytosis

Active Transport Analogy: Like pedaling uphill on a bike… you need energy to get from LOW part of hill to the HIGH part! 

Endocytosis- Going “IN” to the cell Transporting material INTO a cell by the folding of a membrane.

Endocytosis- Going “IN” to the cell

Exocytosis- “EXITS” the cell Moves materials OUT of the cell (materials are too big to move through cell membrane…need energy to push them out!)

Let’s Sketch It- Endocytosis v. Exocytosis

Cell Membranes & Transport Video Clip

Brain Pop- Active Transport

Read the Background Info now…

Set up Gummy Bear Lab: 1. Write a prediction/hypothesis to answer the question written at the top of your lab sheet. 2. Fill out BEFORE soaking data in the table by measuring with a ruler 3. Determine MASS using an electronic balance…push ON and then TARE before putting gummy bear on balance. 5. Write initials on TAPE on side of cup, place gummy bear inside and fill with water until it covers gummy bear 6. Place in back of room until next class!

Gummy Bear Lab Day 2 Gently roll bear from cup onto flat paper towel Measure the height & width of your bear FIRST!! Measure mass- Push TARE with wax paper ON electronic scale; Gently roll bear from paper towel onto scale. Record (g) and slide bear back onto paper towel. Record descriptive characteristics in the chart. Calculate the percent change…example is class set provided. You may use a calculator/device for this...SHOW YOUR WORK !! Graph percent change results in a BAR graph. Answer the analysis questions & turn in.

Password  Passive Transport Active Transport Endocytosis Diffusion Edit the boxes for your subject… Exocytosis Osmosis Active Transport 

Mind Stretcher 12/7/16 What is Passive Transport? Name the two types of passive transport. Explain the difference between the two. When molecules move from HIGH to LOW concentration without using energy. Diffusion & Osmosis Diffusion- gas and liquid molecules Osmosis- WATER molecules only

Osmosis Rap https://youtu.be/HqKlLm2MjkI

Let’s Sketch It- Active v. Passive Transport!