Do Now! 11/7/16



Go to
www.socrative.com
Join room name
“PETERS216”
Complete the quiz (it is
not a graded quiz)

Homework: Gummy
Bear labs due Monday
Gummy Lab

The type of solute did not matter (salt vs. sugar)

We are dealing with the concentration of water

Concentration of water outside the bear vs.
inside the bear
Distilled Water
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No solute outside which means high
concentration of water

Lots of solute (sugar) inside, which means lower
concentration of water

Which way will water move?
Salt Water

Some solute (salt) outside which means high
concentration of water

Lots of solute (sugar) inside which means low
concentration of water

Which way will water move?
Which one had “more” Osmosis?

Salt or Distilled?
–

Distilled
Why?
–
There was a higher concentration of water outside in
the distilled setup, than the concentration of water
outside in the salt setup.
Question:

Which of the following statements concerning
diffusion and active transport is correct?
A.
B.
C.
D.
Both diffusion and active transport require
cell energy.
Neither diffusion nor active transport
require cell energy.
Diffusion requires cell energy while
active transport does not.
Active transport requires cell energy
while diffusion does not.
Photosynthesis and
Cellular Respiration
Terms

Pigment – material that gives something its color
based on what type of light it absorbs

ATP – cellular energy and is produced by cellular
respiration
Terms

“troph” = food

Autotrophs
–
–

Auto = self
Make their own food
Heterotrophs
–
–
Hetero = different
Get their food from something else (they have to eat it)
Brain Pop

Photosynthesis
Photosynthesis
Photosynthesis



Process that converts the
sun’s energy into chemical
energy stored in sugar
Takes place in specialized
structures inside plant cells
called chloroplasts
Chlorophyll is the pigment that
absorbs sunlight.
Photosynthesis Reaction

CO2 + H2O + light energy → C6H12O6 + O2

Where does the “light energy” come from?

The food plants make is called glucose (sugar)
Photosynthesis Reaction

CO2 + H2O + light energy → C6H12O6 + O2

Carbon Dioxide + Water + Light Energy → Sugar (Glucose) and Oxygen

Either one is fine!
How do plants absorb CO2?


Stomata (plural) – pores in the leaf that allow for
exchange of gas
Stoma (singular)

CO2 – in
O2 – out

How does the gas move???

–
Your answer below
Brain Pop
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Cellular Respiration
11/9/16

Do Now:

What 3 things are
required for
photosynthesis and what
2 things does it produce?

Homework:


Gummy lab due Monday
Submit Do Now
document by Monday in
google classroom.
Cellular Respiration

Process that turns food into cellular energy (ATP)

Happens in both plant and animal cells

Occurs in the mitochondria
–
In the folds within (the worm)
Cellular Respiration Overview

Overall Reaction:
– C6H12O6 + O2 → CO2 + H2O + ATP
– Glucose + Oxygen → Carbon Dioxide + Water
+ ATP

Energy output depends on whether or not there is oxygen

Aerobic Respiration – oxygen present

Anaerobic Respiration (fermentation) - no oxygen
present
Which one is better?

Oxygen rich respiration (aerobic)?

Oxygen poor respiration (anaerobic)?
Runner’s Bonk

Ever felt tired when running?

https://www.youtube.com/watch?v=aYfWH960W0Q

Why??
Fermentation

The process by which your body produces
energy in the absence of oxygen
Produces much less ATP

Makes your muscles very sore the next day

–

Lactic acid fermentation
Can be used to make alcohol!
–
Alcoholic fermentation
Energy Tally

36 ATP for aerobic vs 2 ATP for anaerobic
–

Per glucose molecule
Anaerobic organisms can’t be too energetic but
are important for global recycling of carbon
Cycle
ATP