What is the main structure that the cell membrane is composed of?
A phospholipid bilayer
Which type of cellular transport uses energy?
Active Transport (requires ATP)
Active transport occurs in the cell membrane, and involves using energy to move molecules from LOW to HIGH concentration.
Which type of solution is this?
file:///var/folders/mb/672bhlmn0rv7ncff330bdrtm0000gp/T/TemporaryItems/NSIRD_screencaptureui_mXMZpQ/Screenshot%202026-04-23%20at%203.58.39%E2%80%AFAM.png
Hypotonic
What molecules can move through the cell membrane by simple diffusion?
CO2, Gases, and Water
It speeds up chemical reactions
What is the channel protein's function?
It lets molecules in and out of the cell
What is diffusion?
Diffusion is when molecules move from high to low concentration.
What type of macromolecule is an enzyme?
PROTEIN
Which type of solution is this?
file:///var/folders/mb/672bhlmn0rv7ncff330bdrtm0000gp/T/TemporaryItems/NSIRD_screencaptureui_DAmDRX/Screenshot%202026-04-23%20at%204.01.07%E2%80%AFAM.png
Hypertonic
What is passive transport?
Passive transport is moving molecules across the cell membrane without using energy, from high to low concentration.
Name two factors that can impact the effectiveness of enzyme function in the body.
temperature & pH level
What is the main function of the cell membrane?
It acts as a protective, selectively permeable boundary for the cell, regulating the entry of nutrients, exit of waste, and maintaining a stable internal environment (homeostasis).
Osmosis is the movement of _____________ through a membrane.
WATER
What is this structure showing? http://hyperphysics.phy-astr.gsu.edu/hbase/biology/imgbio/celmem.gif
The Cell Membrane
Define activation energy.
The amount of energy it takes for a chemical reaction to occur-- enzymes help to lower activation energy.
What is this an example of? http://3.bp.blogspot.com/_Zvyh1feziJU/TSKOhpAYbmI/AAAAAAAAAFE/IOZFP-M-V3c/s320/diffusion.gif
Passive Transport
Which solution has equal amounts of water inside and outside the cell?
Isotonic
Explain Facilitated diffusion
When protein molecules in the cell membrane help move larger molecules across
Why is having enzymes in our body so important?
Our body needs enzymes to help the chemical reactions occur quicker. Enzymes help our bodies work effectively/to its greatest potential.