Download Study Guide for the LS

Name:________________________ Test Date: Tues., 11/17 or Wed., 11/18
Study Guide Cell Processes and SM Assessment
Cellular Transport:
Cell Membrane: The cell membrane is made of a ____________ bilayer.
 This bilayer is __________permeable which allows the movement of some
substances, into or out of the cell.
 Many particles, such as water and oxygen, are tiny enough that they can ______
directly through the cell’s membrane.
 Particles that are too big to squeeze through the cell’s membrane must enter
through _________ doorways.
Passive transport
 The movement of particles, through a protein doorway, from an area of ______
concentration to ____ concentration.
 ____ energy required.
diffusion - The movement of molecules from a region of ____ concentration to a
region of _____ concentration. An example of diffusion is when a drop of blue dye is
put in water and it spreads out turning all of the water blue.
osmosis –The diffusion of _______
through a membrane.
equilibrium- occurs when all the particles are _______ spread out
Scientific Method
Experiments: In order to make sure you are getting accurate results from an experiment you should:
1. conduct ________________ trials
(repeated / one)
2. use only _____________ control group(s)
(one / two)
3. have as ___________________ individuals as possible in both the control group and the
(few / many)
experimental group and test only ONE _________________________ variable at a time.
(independent / dependent)
Vocabulary:
Hypothesis: an “educated guess” of what a scientist thinks will happen. It has to be ________!
Sometimes stated as an If…….. then statement.
Control Group: The group that is not being ________ or gets no treatment. It is important to use
control groups because they allow comparison between subjects receiving and treatment and
those receive no treatment.
Experimental group: The group that is being __________.
Independent Variable: part of the experiment that is __________ by the person doing the
experiment. I CHANGED
Dependent Variable: The part of the experiment that is ____________ by the independent variable
Controlled Experiment: In a controlled experiment, a ___________ ___________ is compared
with one or more experimental groups.
Constants: The factors that stay the ________, in all groups, throughout an experiment.
Disclaimer: You will need to be able to pick out the IV, DV, Control Group, and Constants
from and experiment. Please review classroom handouts for examples.