Part D CER
This part of the lab is a group evaluation.
You and
your lab team will create an argument about the molar concentration of the
unknown solution and the water potential of the carrot cells. An argument is
typically set up with the claim (in this case your suspected unknown molar
concentration), evidence gathered throughout the lab experience, and
reasoning (using what you’ve learned about tonicity and osmoregulation to
support your claim.
Guiding
Question:What
question were you trying to answer in the experiment?
Our
Claim: What is your conclusion? You claim should address:
Unknown Solutions A→F (part A)
Water potential of the carrots (part
C)
Mystery (?) solution with the carrots
Our
Evidence: What data or information did you gather to lead
you to the claim? Use
your packet tables and calculations!
Our
JustificationReasoning: What ideas or
principles from class support your claim? Does the evidence seem reasonable
with what you know? Use
class notes, slides, textbook, etc.
The
score for the CER will be a group evaluation.The presentation will be scored using the following rubric.
Part D CER
This part of the lab is a group evaluation.
You and your lab team will create an argument about
the molar concentration of the unknown solution and the water potential of
the carrot cells. An argument is typically set up with the claim (in this
case your suspected unknown molar concentration), evidence gathered
throughout the lab experience, and reasoning (using what you’ve learned about
tonicity and osmoregulation to support your claim.
Guiding Question:What question were you trying to answer in
the experiment?
Our Claim: What is your conclusion? You claim
should address:
Unknown
Solutions A→F (part A)
Water
potential of the carrots (part C)
Mystery (?)
solution with the carrots
Our Evidence: What data or
information did you gather to lead you to the claim? Use your packet tables and calculations!
Our JustificationReasoning: What ideas or principles from class support your
claim? Does the evidence seem reasonable with what you know? Use class notes, slides,
textbook, etc.
The score for the CER will be a group
evaluation.The presentation will be
scored using the following rubric.
Presentations on Monday, October 27.
4
Quiz: Results
and Corrections
Review
your results on the quiz. Corrections (MCQs only) for 0.5 points.
Explain Describe the processes that allow ions and
other molecules to move across membranes.
Tasks:
1
Revisit Membrane Permeability
Crash Course Biology - Let's watch a video to review topic 2.5 Membrane Transport.
2
Mechanisms
of Transport
From AP
Biology CED:
"Metabolic energy
(such as that from ATP) is required for active transport of molecules and ions
across the membrane and to establish and maintain electrochemical gradients."
Use the
large paper and post-it notes to classify the movement of materials with the
membrane and membrane proteins as listed on the sheet.
3
Chart It Out: Bulk Transport
What are the different means to bulk transport
material?You are to compare the
different bulk transport methods:
exocytosis
endocytosis
phagocytosis
pinocytosis
receptor-mediated endocytosis
4
Lab:
Osmosis Continued
Complete
the different parts of the osmosis lab:
Part A Be sure both
charts have been completed
Note: (14.) Ratioanale
will be in the CER in part D
Construct the graph
Part B
Be sure to complete
the table with the % change calculations
Part C
Calculate the water potential
of the carrot
Part D
CER - Where the claim is to be your explanations
for the unknown molar concentrations A→F (part A) and Mystery? (part b).
From the instructions.
Guiding Question: What question were you trying to
answer in
the experiment?
Our Claim: What is your conclusion?
Our Evidence: What data or information did you
gather to lead
you to the claim?
Our Justification or Reasoning: What ideas or principles from
class supports your claims? Does the
evidence seem reasonable