Download Week 20 - Crossroads Academy

5th Grade Science
Dr. Whipple
Week 20
Jan 23rd – 27th
This week we will…
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Continue our discussion of the differences between plant and animal cells
and begin to branch out into plant botany
View premade slides of plant and animal cells under the light microscope
Check on our orchids
Start an art project! I’ve noticed that many of you are fantastic artists…this
Thursday…bring your colored pencils to class! I will give more specifics in
class on Monday, but briefly each person will chose a different organelle,
type of cell, type of plant tissue, or type of plant cell. You will then draw the
chosen cell, tissue, or organelle and write a paragraph describing what it
does. Each person will then give a 3-5 minute presentation to the class on
their cell or organelle. We will start this project this week and present our
results next Thursday Feb. 3rd.
Some general notes on cellular respiration and photosynthesis:
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Cellular respiration is how we get energy from the food that we eat. It’s
really all about the glucose. We break down glucose in order to form our
body’s basic energy source: ATP. Guess what organelle does this for us??
We get this glucose from plants…and they make it via photosynthesis. (how
very nice of them! J) And what organelle does this awesome job??
Photosynthesis is the process by which plants (some bacteria) use the
energy from sunlight to produce glucose.
Cellular respiration converts glucose into ATP, the "fuel" used by all living
things.
Cellular respiration is a two-phase process. Ultimately, glucose is oxidized
and produces ATP (energy), carbon dioxide, and water. This is shown via
the equation: C6H12O6 + 6O2 + 6H2O → 12H2O + 6 CO2
In the first phase, glucose is broken down to pyruvic acid in a process
called glycolysis. In Eukaryotes, this occurs in the cytosol.
The second phase, occurs in the mitochondria. Pyruvic acid is oxidized to
create ATP, CO2 and O2. CO2 and O2 are waste products.
The second phase includes the citric acid cycle and the electron transport
chain.
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Here are some videos covering the topics…
Feel free to check them out before class…but do not get bogged down by the
number of ADT/ATP, FADH, or NADH. Just know these are either types of
energy molecules or co-enzymes that help the cycles happen (help ATP get
made so we can run run run!).
It’s all about making and breaking chemical bonds…and moving those
electrons (as we discussed in our chemistry unit!)
https://www.youtube.com/watch?v=4Eo7JtRA7lg Cellular respiration
https://www.youtube.com/watch?v=00jbG_cfGuQ ATP and cellular Respiration
https://www.youtube.com/watch?v=uixA8ZXx0KU Photosynthesis
https://www.youtube.com/watch?v=sQK3Yr4Sc_k Photosynthesis
Homework:
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Once you’ve selected your cell or organelle, feel free to continue to work on
your project at home
Recopy your notes each night on the day that you take them! **