Test Over Cells Flashcards
(36 cards)
The concentration of calcium inside a cell is %2. The concentration of calcium in the surrounding fluid is %1. How would the cell obtain more calcium.
Diffusion
What are the principles of the cell theory
Cells are the basic units of life
All living things are made of cells
All cells are produced by pre existing cells
What does not contain a membrane bound nucleus?
Prokaryotes, bacteria , nucleons
When a white blood cell takes in a bacterium the process is _________ and called _________
Active; phagocytosis
What is not true of plasma membranes
Folded membranes do not form compartments in the cell
Folded membranes are an advantage to the cell because
Cell processes can be mor efficient, the membranes form interconnected compartments, and the membranes provide a larger surface area
All living things are made of
Cells
If as cell contains a nucleus it must be a
Eukaryotic cell
Because cells have a watery environment both inside and outside, the polar ends of the phospholipids in the plasma membranes form
Double layers
The fluid mosaic model describes a structure with
Polar layers on the outside and nonpolar layers on the inside
Because the phospholipid molecules and some proteins are free to move, the plasma membrane is said to be a
Fluid mosaic
A cells contents would be the same as it’s surrounds were it not for
Selectively Permeable membrane
Water mobs into a cell placed in a
Hypotonic solution
Water moves out of a cell if the cell is placed in
Hypertonic solution
If cells are placed in a strong sugar solution, water will
Pass from the cell to the sugar solution
A cell moves particles from a region of lesser concentration to a region of of greater concentration by
Active transport
If a cell is placed in salt water water leaves the cell by
Osmosis
The structure most responsible for maintaining homeostasis is the
Plasma membrane
Movement of particles from an area of high concentration to one of lower concentration
Diffusion
The comcentration of dissolved substances outside the the cell is higher than inside
Hypertonic
The concentration of dissolved substances in the solution is the same as outside
Isotonic
The movement of material into the cell from outside the cell
Endocytosis
Diffusion of water molecules through a selectively permeable membrane
Osmosis
Release of wastes or cell products from indie to outside a cell
Expocytosis
