1) Diffusion is a process in which.... a) Molecules move from area of high concentration to low concentration b) Molecules break up into smaller ones c) Water moves across membranes d) Energy is used to move molecules from high to low concentrations 2) Diffusion of water across a semipermeable membrane is called what? a) Endocytosis b) Diffusion c) Active transport d) Osmosis 3) Equilibrium in a cell is reached when... a) All the water has left a cell b) All the molecules have been destroyed c) The concentration of a chemical or water has reached a balanced state 4) Which of the following is passive transport? a) Diffusion b) Osmosis c) Both d) None of these 5) A semipermeable (some molecules can get through) membrane does what? a) Allows some molecules through but not others b) Is the packaging system in a cell c) Will only allow large molecules in and out d) Only exist in plant cells 6) Mitosis is the process in which... a) A cell doubles its DNA b) the nucleus divides and chromosomes are distributes equally between two cells c) Cell membrane dissolves d) Large molecules move in and out of the cell 7) The longest part of the cell cycle, when a cell grows and go about its normal function, is called what? a) Interphase b) Metaphase c) Mitosis d) Cytokinesis 8) Cytokinesis is when... a) A cell divides into two cells b) Grows and develops c) Replicates its DNA d) Starts to die 9) If sugar is moved into a cell against its concentration gradient (from low to high concentration) it is called what? a) Passive transport b) Active transport c) Exocytosis d) Osmosis 10) As cells grow, their surface to volume ratio becomes what? a) Too large for the cell to work properly b) Too small for the cell to function properly 11) What happens when cells grow too large for osmosis to work properly? a) They die b) They divide c) They get to homeostasis d) They get to equilibrium 12) What is the purpose of mitsosis? a) To bother children in science class b) TO help cells grow c) To repair damage to an organism d) To help organisms reproduce 13) Which is an example of osmosis in real life? a) A lizard regrowing its tail after it got bit off b) The creation of an egg c) The joining of sperm and eggs in reporduction d) The random mixing of genetic material

Cell Process Test 25

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