Chapter 3 & 4 lecture Flashcards
Anything that binds with a receptor protein in the membrane of a cell is called a?
Ligand
Osmosis is?
The NET movement of water across a selectively permeable membrane from a solution of lower concentration of solutes to a solution of higher concentrations of solutes
Water has to pass through a channel protein the membrane called?
Aquapore
What are the 3 most important things to consider regarding osmosis?
- Almost all cells are permeable to water
- There has to be at LEAST one solution that cannot cross the membrane
- The membrane must be selectively permeable
Osmotic pressue is?
The pressure that develops against the membrane to block the flow of water in a cell
What is osmolarity?
Total concentration of solutes in a solution
Isosmotic is?
Concentration being equal
Hyperosmotic is?
higher concentration of solutes
Hyposmotic is?
lower concentration of solutes
Water always moves from?
Hypotonic goes to hypertonic
If the cell bursts it is called ___________.
If the cell shrinks it is called ___________.
Lysis
Creanation
What is the term for moving materials in and out of cells in vesicles?
Vesicular Transport
What are the two types of Vesicular transport?
Exocytosis and Endocytosis
Endocytosis has 3 sub categories and what do they do?
- Receptor mediated endocytosis-creates vesicle
- Phagocytosis-cell eating
- Pinocytosis-Cell drinking
Define Differentiation-
The process in which non-specialized cells, often referred to as stem cells, undergo genetically-guided changes to become more specialized cells.
What are the 3 germ layers?
Ectoderm, Mesoderm, Endoderm
What is hematopoiesis?
Ongoing formation of mature blood cells
What are the 4 major types of tissues in the body?
Epithelial, Connective, Muscle tissue, nervous tissue
Epithelial tissue is considered a tissue with great cellularity, what does this mean?
It is made of many cells
What is apical surface?
free surface