BIO4

Question 1

Hypertonic solution

Answer 1

low concentration outside of cell leading water molecules to leave the cell, the cells then shrivel up

Question 2

Hypotonic solution

Answer 2

High concentration outside the cell but lower in the cell. Water molecules enter, cell expands

Question 3

Isotonic solutions

Answer 3

equal concentrations in and out the cell. no water movement.

Question 4

ATP

Answer 4

energy rich particles that energize the cell. Think of a rechargeable battery that powers the cell’s activity’s

Question 5

Concentración gradient

Answer 5

difference of a substance between 2 areas. one side is harder to get thru while other is ez

Question 6

Transport protein

Answer 6

carry thing in to cell. aid things that need to come in but are too large- lead to lower concentration on the gradient.

Question 7

marker proteins

Answer 7

flags or labels cells use to identify molecules and to communicate with other cells

Question 8

Passive transport DIFFUSION

Answer 8

• lazy river at amusement parks for molecules.
• doesn’t use ATP

Question 9

simple diffusion (passive)

Answer 9

membrane is permeable to solute. Things can glide into the cell.

Question 10

facilitated diffusion

Answer 10

some molecules are bigger and have a harder time getting thru the membrane. Transport proteins help move them into an area where the membrane is more permeable

Question 11

Ósmosis (passive transport)

Answer 11

transport of water molecules
-move down their concentration gradient as a response to solute concentration
-net flow of water is from the more dilute solution to a more concentrated solution.

Question 12

Plasmolysis

Answer 12

-when a plant cell is placed in a hypertonic solition
-vacuole loses water and shrinks causing the cell membrane to peel away from the cell wall
-eventually plant goes limp

Question 13

Turgidty

Answer 13

-when plant cell is placed in a hypotonic solution.
-vacuole gains water and expands causing cell membrane to swell, pushing on the cell wall

Question 14

Active transport

Answer 14

-Required ATP during transport as solute molecules move up (against) their concentration gradient.
-helps maintain an internal environment that is different form its external environment.
- either by transport proteins or change in cell membrane

Question 15

Endocytosis

Answer 15

injest food/ take in
- Phagosytosis: cell eats large particles
-Pinosytosid: cell drinks, takes in droplets.

Question 16

exocytosis

Answer 16

-expulsion/ release of large materials from cell
- used to excrete waste
-secrete hormones.