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Bio 101 Class Notes
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BIO 101Bio 101 Class Notes
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Interactive Class Notes / Learning Log / Textbook NotesRemember to REVIEW these
notes daily so you will be ready Name:
to participate in class discussion
the next day. This practice of
Class:
daily review will also prepare Period/Seat #:
you for future assessments.
Date:
Unit: Ecology Chapter: 8 Topic: Cell Structure and Function Section: 8.3 Cell Transport
Learning Goal:
o Relate structure to function for the components of plant and animal cells.
o Explain the role of cell membrane as a highly selective barrier
(Passive and Active Transport).
Think About It
When thinking about how cells move materials in and out, it can be helpful to
think of a cell as a nation. The boundaries of a nation are its borders, and
nearly every country tries to regulate and control the goods the move across
those borders.
Cells have their own borders, which separate the cell from its
surroundings and also determine what comes in and what goes out.
How can a cell separate itself from its environment and still allow
material to enter and leave?
General Rubric for Student Understanding
Pre Post Scale
I understand ........... enough to teach.
4 (I can peer-tutor on this topic) (Expert Teacher - Wow!!)
I understand ............ enough to use.
3 (Skilled & Independent!)
I understand part of ............, but
2 (Need some help please!)
not............. .
I do not have an understanding (S.O.S. - I’m lost; will come for
1
of................. . tutoring.)
Questions/Main Ideas: Notes:
& Key Terms In My Own Words (“How will I remember each term?”)
Include Images and Hyperlinks
Key Questions
What is passive transport? Materials moving through the cell membrane without energy.
What is active transport? The movement of materials from one cell membrane to another.
This study source was downloaded by 100000840275362 from CourseHero.com on 06-15-2022 06:11:38 GMT -05:00
https://www.coursehero.com/file/79091154/Biology-Class-Notes-Section-83doc/
, Make it Personal
1. If you were stranded in 1. I would not drink salt water if I was thirsty, because I would only be
on a boat and were more thirsty.
really thirsty and
dehydrated would you
drink the salt water? 2. Um…I’m not sure what this is supposed to mean, but…I guess I
2. Would you ever would??? Depends how long though, and how bad I need to go.
consider holding your
‘pee’ in order to win a
Nintendo ‘Wii’?
Explain.
Key Vocabulary
Diffusion The movement of materials to a higher-concentration membrane.
Facilitated diffusion Spontaneous transport of molecules or ions across a biological membrane
Aquaporins All water to pass right through them.
Osmosis Movement of water through the cell membrane by facilitated diffusion.
Isotonic Two solutions are the ‘same strength’
Hypertonic Having a higher osmotic pressure than a particular fluid.
Hypotonic Having a lower osmotic pressure than a particular fluid.
Osmotic pressure Pressure applied to a pure solvent to prevent passing into a given solution.
Building Vocabulary The prefix “endo” in endocytosis comes from a Greek word meaning …
Prefix- “Endo”
Making it Visual: Higher Solute Concentration Outside Lower Solute Concentration inside
Figure 7-15 Diffusion
Predict: How would the
movement of solute particles
seen here be different if the
initial area of higher
concentration had been the
inside of the cell instead of the
outside?
Answer:
If it was inside the cell, the minerals wouldn’t be as ‘free’.
In your notebook Movement of water through an Aquaporin
Describe in your own words
why osmosis is really just a
special type of facilitated
diffusion?
Answer: Osmosis is similar to simple diffusion, but it describes water
molecules moving across a membrane.
This study source was downloaded by 100000840275362 from CourseHero.com on 06-15-2022 06:11:38 GMT -05:00
https://www.coursehero.com/file/79091154/Biology-Class-Notes-Section-83doc/
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