Chapter 7 Sections 3 and 4
Organ System
A group of organs that work together to keep organisms alive.
Faciliated diffusion
A protein channel can help molecules move down their concentration gradient
unicellular organism
A single-celled organism is also called a _____________
Calcium Potassium Sodium
Common ions that get pumped.
Lipid Bilayer
Core of nearly all cell membranes is a double-layered sheet.
It forms a vacuole inside a cytoplasm
During endocytosis, what happens to the pocket in the cell membrane when it breaks loose from the membrane?
Active transport
Energy-requitring process that ove material across a cell membrane against a concentration difference
Plants, algae, fungi, and many prokaryotes.
In what organisms are cell walls found?
Organ
Many tissues working together for a certain function
Hypotonic
The solution is below stregth in solute
Isotonic
The solutions are the same strength
Cellulose
What are plant cell walls mostly made of?
Exocytosis
The membrane of the vacole surrounding the material duses with the cell membrane and releases large molecules
Phagocytosis
Extension of cytoplasm surround large particles and package it within a food vacuole than engulfs it.
Cells Tissues Organs Organ Systems
List from smallest to largest the levels of organization for a multicelled organism
The hypertonic side
On which side of a selectively permeable membrane does osmosis esert a pressure?
Diffusion
Paricles tend to move from an area where they are more concentrated to an are area where they are less concentrated.
Pinocytosis
Process by wich a cell takes in liquid from the surrounding environment.
Endocytosis
Process of taking material in the cell by means of infoldingsorpockets, of the cell membrane
Tissue
Similar cells grouped together and functioning
Hypertonic
Solution is above strength in solute
Inside
The cell wall lies_______ the cell membrane
Osmosis
The diffusion of water molecules across selectively permeable cell membrane.
Concentration
The mass of solute in a given volume of solution, or mass/volume
Muscle Epitheial Nervous Connective
What are the four types of tissue in most animals?
It regulates what enters and leaves the cell and also provides protein and support
What are the functions of the cell membrane?
Some substances can pass across them and others cannot
What does it mean that biological membranes are selectively permeable?
They have specialized cells that perform special tasks
What does it mean to be specialized?
When specific different molecules move across membranes through protein channels.
What happens during the process of facilitated diffusion?
Transport molecules that move across
What is a pump?
Reproducing rapidly and in great numbers and clone themselves
What is binary diffusion?
They last longer and have multiuple jobs to help the cell that develop different.
What is cell specialization in a multicellular organism?
When the concentration of the solute is the same throughout.
What is meant when a system has reached its equilibrium?
Proteins from channels and pumps help move material across the cell membrane. Carbohydrates act like a chemical identification cards.
What is the difference in the function of the proteins and the carbohydrates attached to a cell membrane?
To provide support and protection for the cell
What is the main function of the cell wall?
They allow not too large molecules to cross different membranes
What is the role of protein channels in the cell membrane?
Nervous, connective, and muscle tissues
What kind of tissues can be found within a muscle in your body?
When it reaches the equilibrium
When will water stop moving across a membrane?
To help push in an object or out of an object
Why is ATP needed in active transport?