Transcript File - Science: Mrs. Dicpinigaitis

HW: Metbolism Handout due tomorrow. Scientific Sherlock
#25-30 due Friday
Do Now:
1. Put your completed Food
and Energy packet in the bin
2. Answer the questions on
your sheet about the Eggs
Nutrition Facts
1) What is the serving size for this food label?
1 egg
2) How many calories are in one serving?
70 calories per egg
3) How many grams of Protein are in one
serving?
6 grams
4) How many servings would you need to eat
to reach 100% of your % Daily Value of
Protein? (HINT**YOU HAVE TO GET YOUR
PROTEIN PERCENT TO REACH 100 OR
MORE!)
12% X 9 servings = 108%
3) Eggs contain iodine. What health benefits
come from Iodine?
Proper mental development;
metabolism
Protein Notes
• Proteins are chemical compounds that
build
repair cells.
____________
and ___________
• They are important for growth and
development.
• Proteins are the building blocks of life.
Protein Notes
cell
• Every ________
in the human body contains
protein.
• The basic structure of protein is a chain of
amino ___________.
acids
__________
Eggs,
• Proteins are found in foods such as: _______
beans,
and lean meat or fish
_____________________________________.
A few weekends ago, the 7th grade science teachers went to
Citifield to catch the Mets game. They arrived early and
grilled up some yummy chicken wings to enjoy before the
game.
As you know, chicken is made of
Protein. Let’s create a model of
the chicken protein
together now
Lego Protein Model Challenge
Step 1: Eating Protein
Create a model of the chicken muscle using the small amino
acid code segment ARG – CYS – GLY – GLN – ILE – VAL
HOLD UP YOUR MODEL WHEN YOU ARE FINISHED
Lego Protein Model Challenge
Step 2: Digestion
Since you aren’t a chicken, you can’t use this protein
molecule as it is when you ingest it. Water and enzyme
action allow you to digest it; in other words, break it down
into small amino acids.
HOLD UP YOUR AMINO ACIDS WHEN YOU ARE FINISHED
DIGESTING THEM.
Lego Protein Model Challenge
Step 3: Assembling YOUR Protein
You need to replace red blood cells, which contain oxygen
grabbing protein called hemoglobin. Create a model of
hemoglobin using your amino acid blocks.
CYS – ILE – GLN – ARG – GLY – VAL - LYS
HOLD UP YOUR PROTEIN WHEN YOU HAVE FINISHED.
Data Table 1: Positive vs Negative for
Protein
Procedure A: Testing Known Substances
Biuret Solution in Dropper
Bottle
Observations of Test Tube
#1 (No Protein)
Observations of Test Tube
#2 (Protein Present)
Color: _______________
Color: ______________
Positive for protein? _____
Color: ______________
Positive for protein?: _____
Nutrient Testing for Proteins
A Positive for Proteins is Purple
Procedure B: Testing Unknown Substances
Unknown Substance
Observed Color
Reaction (+) or (-)
A
Purple
+
B
Purple
+
C
Light Blue
-
Conclusion Questions:
1. What is the name of the chemical indicator?
We used the indicator Biuret solution.
Why was it used?
We used Biuret to test for protein.
2. Which substance(s) tested positive for
protein? Substance A and substance B
tested positive for protein.
How did you know?
The color changed from light blue to purple.
3. Why does your body need protein?
Proteins build and repair body cells.
Exit Ticket
• Today you will fill out an exit ticket and turn it
in before leaving class
BrainPOP: Nutrition
• BrainPOP: Nutrition