This type of osmotic environment/ solution • is ideal for plant cell • Will cause a red blood cell to swell up and burst • Has a lower concentration of solute.______?

The larger a cell, the longer the time it takes for molecules to diffuse to the center.     True   False

Which of the following is correct about a symporter?     it is a form of passive transport     it moves one substance at a time against its concentration gradient     it utilizes ATP     it moves large substances using endocytosis/exocytosis     none of the above are correct

The following type(s) of gradient can drive different fluxes across the cell membrane:     Voltage gradient.     Pressure gradient.     Concentration gradient.     Osmotic pressure gradient.     All of the above.

Circle/highlight either T or F for each row T T T T T T F Mechanosensation is the way we sense all temperature LL F F LL F ןד FL Axons need a growth factor in order to grow Secondary active transport is when a solute moves against its gradient and that movement is powered by ATP You can couple passive transport with active transport in order to move a solute against its gradient Thermal vents were the likely the source of energy for the origin of life F Neurons that innervate the limb are never born if the limb isn't there

What of the following describes an antiprot carrier Both molecules move through at the same time in the same direction  Carrier two solutes in opposite direction  Carries one type solute Exemplified via facilitated diffusion  Carries molecules both ways but only one at a time

D. OSMOSIS WITH LIVING PLANT CELLS C. a. Procedure This experiment is designed to demonstrate the principles of osmosis with living plant tissues. Using a corkborer, bore two equal-sized cylinders of freshly cut raw potato. Feel them and note the degree of firmness. Place one potato piece in a culture dish containing enough five percent salt solution to cover the potato completely. Place the second potato piece in a culture dish containing the same amount of distilled water. After about 20 minutes, examine both pieces of potato and note any changes in their degree of firmness. b. Results SOLUTION AROUND POTATO 5% Salt Distilled water doesn't Molle 78 FIRMNESS OF POTATO AFTER 20 MINUTES soggy Firm Questions 1. Give an explanation for your results with the 5% salt solution.

Which of the following membrane-crossing mechanisms requires energy?   Active transport   Facilitated diffusion   Simple diffusion   Passive transport   Turgor

Denitrification occurs under:     anaerobic conditions     aerobic conditions     both aerobic and anaerobic conditions

U-tube Consider the image below, which shows a U-tube divided with a selectively permeable membrane. Use arrows to depict how water will move. Hypertonic solution Hypotonic solution Selectively permeable membrane