Chapter 3 Notes Part 4 Flashcards
Hypertonic solution
More water leaves a cell than enters it, because of greater solute particles outside the cell
Hypotonic solution
More ever enters the cell than leaves it, because of greater solute particles in the cell
Isotonic solution
Contains the same concentration of solute particles as a cell, water enters and leaves the cell in equal amounts leaving the cell the shame size
Hypertonic
Shrink
Hypotonic
Expand
Diffusion most
Important , used in respiration of oxygen
Filtration
The process by which molecules are forced through membranes by blood pressure from higher pressure to lower pressure
Active mechanisms types
Active transport and endocytosis
Active transport
Movement of molecules from regions of lower concentration towards regions of higher concentration with the help of cellular energy and carrier molecules
40%
Of a cells energy may be used for active transport
Proteins
Serve as carrier molecules in active transport
Carried across by active transport
Amino acids, sugars, and ions
Ion examples
Sodium, potassium
What do ions do
Helps with nerve endings and muscle contractions
Almost 1/2 energy
Used to being things in and out of the cell
Water brought in
Pinocytosis
Solid brought in
Phagocytosis
Endocytosis
Molecules or particles that are too large to pass through the cell membrane by diffusion or active transport enter by the formation of a vesicle from the cell membrane
Pinocytosis
Process by which cells take in tiny drops of liquid
Phagocytosis
The process by which cells take in solids and digest
Life cycle of a cell
Involves mitosis, cytoplasmic division, interphase, and differentiation
Centrioles
Pull apart
Before mitosis
Interphase
Interphase
Cell getting ready to reproduce. Grow. Double.
