Ch.4 Sec.2
What is the Plasma Membrane?
The cell's outer boundary
What is a Cell Wall?
A rigid layer that lies outside the cell's plasma membrane.
What is a Cell?
A cell is the smallest unit that can carry on all of the processes of like.
What is the result of a double layer?
Phospholipid Bilayer
The cytoskeleton is what?
A network of then tubes and filaments that crisscrosses the cytosol.
What are Prokaryotes?
Organisms that lack a membrane-bound nucleus and membrane-bound organelles
What is a large, fluid-filled organelle that stores not only water but also enzymes, metabolic wastes, and other materials?
The Central Vacuole
Who made the term"cell"?
Robert Hooke
When a cell is about to divide, the chromatin condenses to form what?
Chromosomes
Hollow tubes made of a protein called tubulin are called what?
Microtubules
What are Eukaryotes?
Organisms made up of one or more cell that has a nucleus and membrane-bound organelles
Each chloroplast contains a system of flattened, membranous sacs called?
Thylakoids
What are the three essential parts of the Cell Theory?
-All living organisms are composed of one or more cells
-Cells are the basic units of structure and functions in an organism
-Cells come only from the reproduction of existing cells
What is the Nuclear Envelope?
A double membrane that surrounds the nucleus.
Lysosomes are what?
Vesicles that bud from the Golgi apparatus and that contain digestive enzymes.
What is Cytoplasm?
A region of the cell that is within the plasma membrane and includes fluid and all of the other organelles except the nucleus.
What is chlorophyll?
Leeuwenhoek did what?
He was the first person to observe living cells.
What do Ribisomes make when they are attached to the E.R?
Proteins
What is another system of flattened, membranous sacs called?
Golgi Apparatus
What is an Organ System?
A group of organs that are part of the digestive system.
What color is Chlorophyll?
Who noted that all cells come from other cells?
Rudolf Virchow
What are the two types of Endoplasmic Reticulums?
Rough and Smooth
Mitochondria transfer what from organic molecules?
ATP