5 Written Questions

1. (biology) the theory that cells form the fundamental structural and functional units of all living organisms
2. process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
3. a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites
4. cell organelle filled with enzymes needed to break down certain materials in the cell
5. contain secretions that will be discharged from the cell these vesicles will perform exocytosis (fusing with the plasma membrane to empty contents)

5 Matching Questions

1. passive transport
2. cytoskeleton
3. peroxisomes
4. endoplasmic reticulum
5. transport protein

1. a the movement of materials through a cell membrane without using energy
2. b an internal membrane system in which components of cell membrane and some proteins are constructed
3. c a protein located in the cell membrane that helps move specific substances in and out of the cell
4. d network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement
5. e membranous sacs containing enzymes used to break down hydrogen peroxide

5 Multiple Choice Questions

1. (of a solution) having a higher osmotic pressure than a comparison solution
   1. hypotonic
   2. excytosis
   3. isotonic
   4. hypertonic
2. of or involving muscular contraction in which tension is constant while length changes
   1. hypotonic
   2. isotonic
   3. hypertonic
   4. osmosis
3. tiny structures that carry out functions necessary for the cell to stay alive
   1. flagella
   2. organelles
   3. nucleus
   4. eukaryotes
4. a carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell
   1. sodium- potassium pump
   2. osmosis
   3. diffusion
   4. active transport
5. organisms whose cells lack a nucleus
   1. peroxisomes
   2. eukaryotes
   3. Ribosomes
   4. prokaryotes

5 True/False Questions

1. facilitated diffusion → the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins

   True        False

2. osmosis → diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal

   True        False

3. muscle cells → a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites

   True        False

4. endocytosis → process by which a cell takes in a substance by surrounding it with the cell membrane

   True        False

5. cilia → (adenosine triphosphate) main energy source that cells use for most of their work

   True        False