Homeostasis, Cell Structure & Functions Flashcards
(13 cards)
What is a Plasma Membrane?
Controls what enters and what leaves the cell.
Cell theory True or False?
Cells arise only from previously existing cells
True
True or False?
Prokaryotic cells have a nucleus and other organelles?
False that would Eukaryotic cells.
What is the theory that proposes two prokaryotic cells becoming one eukaryotic cell.
Endosymbiont theory.
What are the principles of the cell theory?
Cells are the basic unit of live.
All living organisms are composed of one or more cell.
Cell form from existing cells.
What is Homeostasis?
The process of maintaining balance in an organism’s internal environment.
How does selective permeability work?
Allows certain substances to pass in and out of the cell while keeping others out.
How does A cell’s Plasma membrane function?
Selective permeability is how the plasma membrane functions.
Give A example of homeostasis
Water regualtions
Give A example of homeostasis
Body temperature
The movement of substances across the plasma membrane against a concentration gradient that requires energy is called?
Active Transport
Carbohydrates attached to proteins, also known as ___.
Glycoproteins
Describe the effects on a cell in a hypertonic solution?
The net movement of water is out of the cell.
Animal cells in a hypertonic solution will shrivel.
