Lab 4- Cell Structure & Function Worksheet

Question 1

plant cell structures

Answer 1

refer to image

Question 2

animal cell structure

Answer 2

refer to image

Question 3

prokaryotic cell structure

Answer 3

refer to image

Question 4

eukaryotic vs prokaryotic

Answer 4

prokaryotic:
-lack membrane-bound organelles
-DNA concentrated in region called nucleoid region
eukaryotic:
-membrane bound organelles

Question 5

plasma membrane

Answer 5

selectively permeable, regulates cell conditions

Question 6

types of exchange across membrane

Answer 6

1) simple diffusuon - movement without energy, with conc gradient
2) carrier-mediated transport: movement with us of specialized proteins
3) bulk transport: movement of verylarge substances with interaction of cell membrane and vesicles

Question 7

osmosis

Answer 7

solvent diffuses from a dilute solution (high water) or more concentrated solution (low water)

Question 8

osmotic pressure

Answer 8

amount of force it takes to oppose osmosis

Question 9

tonicity

Answer 9

refers to concentration of solutes on one side of a membrane relative to the other side of the membrane

Question 10

isotonic

Answer 10

solute concentration equal inside and outside cell

Question 11

hypotonic

Answer 11

less solute outside than inside

Question 12

hypertonic

Answer 12

more solutes in solution than in cells

Question 13

hemolysis

Answer 13

red blood cell placed in hypotonic solution, cells swell and burst

Question 14

plant cells in hypotonic solutions

Answer 14

experience maximum turgor pressure, doesn’t burst bc cell wall

Question 15

creantion

Answer 15

blood cells in hyperotnic solutuion, cell shrinks

Question 16

plant cells in hypertonic solution

Answer 16

cell walls experience decreased turgor pressure (become flaccid)

Question 17

0.9% NaCl

Answer 17

isotonic to cells

Question 18

10% NaCl (greater than 0.9%)

Answer 18

hypertonic to cells

Question 19

Solution of distilled water

Answer 19

hypotonic to cells, cells undergo lysis

Question 20

blood cells in water

Answer 20

transparent solution bc cells burst

Question 21

blood cells in hypertonic or isotonic

Answer 21

cloudy

Question 22

cytology

Answer 22

study of both form and function of plant and animal cells

Question 23

histology

Answer 23

study of tissue