Tuesday, January 7, 2020

Recap of project progress; Enzyme Lab Day 1 (Introduction & Notes)

😃Welcome back from break! ❆
Share a rose & thorn with your table while you get settled in..
Unplanned absence - family illness. Sub: Mr. Starke!

WARM UP/Revive your winter break brain:
What are the four types of biomolecules? 

(ask for hands and write on board - check notes for answers)

1.First, check for completion of Unit 2 Vocabulary (show electronic or hard copy for a checkmark)

2.Next, check in on progress... (read below aloud to class)


The Unit Essential Question we're working on is:
Why are captive elephant reproduction rates lower than wild elephant reproduction rates?

What we've done so far:
-Demonstration on the types of biomolecules present in different types of food
-Biomolecules compare/contrast of structure and function
-Research on rhino diets and the role diet plays in the differences in wild/captive reproduction
-Background research on the standards of care for elephants in captivity and AZA diet standards (hand back notes/KWL from 12/20)

In all of this research you should be asking yourself:
Can we apply this to our elephant issue? How?

Check our project progress with these slides and get student group input on the following questions (ask out loud; answer with lab groups):
Do wild elephants' diets differ from captive elephants? How?
Does that impact reproduction? How do you know?


3. Begin Enzyme Lab - Day 1 (3 days total)

Take notes on the information below!

Essential Question: What is an enzyme, and how do they function to break down substrates?

enzyme - a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction

Enzymes are proteins that help speed up reactions in cells. The way they work is similar to how other cell signaling and molecular interactions work: there is a chemical pairing that leads to different outcomes depending on structure. 

They are essential for respiration, digestion, muscle and nerve function, and thousands of other functions. 

Some examples of enzyme functions in humans:
The digestive system - enzymes help the body break down larger complex molecules into smaller molecules, such as glucose, so that the body can use them as fuel.
DNA replication - each cell in your body contains DNA. Each time a cell divides, that DNA needs to be copied. Enzymes help in this process by unwinding the DNA coils and copying the information.
Liver enzymes - the liver breaks down toxins in the body. To do this, it uses a range of enzymes.
Watch Video: Amoeba Sisters - Enzymes (5:46 mins) and take notes

Enzyme Slides HERE (get a chromebook & watch w/group, take notes)

Be ready to discuss next class:
So what's the connection to our elephant project?
HINT...Phytoestrogen (mentioned in Rhino Diet articles) is a hormone signal protein and binds to receptors much in the way that an enzyme binds a catalyst.

If extra time, work on any missing work!

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