Homeostasis, Cell structure and Functions Flashcards
what are two types of homeostasis?
plasma membrane the heat of glucose
what does selective permeability do
it limit what enters and exits the cell
what is the definition of homeostasis
balance is an environment
what is the phospholipid bi layer
it allows the membrane to exist in a watery environment
what are the two things that make up the bi layer
polar heads and non-polar tails
why do uncharged cells go through the membrane faster than charged ones
the charged ones are not restricted by the membrane
what are the three proteins in the membrane
support, transport, and receptors
what does cholesterol do
it makes the membrane more fluid
what is a fluid mosaic model
it is a sea were other components can float through
what are the three cell theory principles
all living things are made of cells, cells are the basic unit and structure of everything, cells only arise from previous cells
what is the problem
how does water flow in and out of a cell to maintain homeostasis
what are we adding to the onion cells
we are adding a salt water and normal water solution
what is the objective
preform and record what happens when you add salt water to a onion cell
what is the cytoplasm
the semi fluid material
what is the cytoskeloten made of
a supporting network of protein fibers
