Biology Quiz

____ is the molecule that provides the energy for active transport

ATP

what is the other thing you need to know for passive transports?

Cells will naturally lose or gain water through osmosis to maintain homeostasis.

what is 1 of the things you have to know about passive transports?

The passive transport of water across a cell membrane is called osmosis.

sodium potassium

(Na+ -K+)

____________ transport requires energy from ATP to move substances across membranes

active

endocytosis, exocytosis, and Na+-K+ pumps are all kinds of __________ transport because they use energy to move substances across membranes

active

endocytosis, the sodium-postassium pump, and exocytosis are all kinds of _______________ transport

active

is endocytosis active or passive

active

is exocytosis active or passive

active

is sodium potassium passive or active

active

receptor-mediated endocytosis is active or passive

active

Requires ATP

active transport

pumps are an example

active transport

when molecules move DOWN the concentration gradient it means they are moving from

an area of high concentration to an area of lower concentration

2 layers of molcules

bilayer

what does diffusion use to help?

carrier proteins

what does facilitated diffusion use to help

carrier proteins

what does ion channels use to help it

carrier proteins

a _________ protein is an integral membrane protein that helps move molecules across a cell membrane

channel

_______________ moves oxygen and carbon dioxide molecules from a high concentration to a low concentration across membranes

diffusion

movement of particles from an area of high concentration to an area of lower concentration is called

diffusion

what is the solute

dots

does passive transport work up or down the concentration gradient?

down

when molecules move from high to low along a concentration gradient we say they are moving _______ the gradient

down

During diffusion molecules tend to move

down the concentration gradient

what does active transport require to move molecules across membranes

energy

all of the following are kinds of passive transport EXCEPT

exocytosis

golgi bodies use _________ to transport molecules out of cells.

exocytosis

what do golgi bodies use to release molecules outside the cell

exocytosis

during what does diffusion carrier proteins grab gluclose molecules, change shape, and flip to the other side of the membrane, like a revolving door

facilated

the diffusion of water across a selectively permeable membrane is called out

facilitated diffusion

allows them to change, shape, grow, shrink, and move

flexible (fluid)

a concentration ________ forms whenever there is a difference in concentration between one place and another

gradient

when the concentration of a solute is the same throughout a system, the system has reached

homeostasis

the polar includes?

hydrophilic

the non polar tails include?

hydrophobic

_________tonic means there is a GREATER concentration of solute molecules OUTSIDE the cell than inside

hyper

in a _________ solution, water leaves a cell by osmosis, causing the cell to shrink

hypertonic

_________tonic means there is a LOWER concentration of solute molecules OUTSIDE the cell than inside

hypo

in a _____________ solution, water enters a cell by osmosis, causing the cell the swell.

hypotonic

example of subtance that use exocytosis in cells

insulin

Ca++, H+, Na+, and K+ move across membranes by going through passageways called

ion channels

a cell must expend energy to transport substances using

ion channels

what is an example of substances that use ion channels in cells

ions

what is an example of substances that use sodium potassium in cells

ions

___________tonic means there is the SAME concentration of solute molecules outside the cell as inside

iso

a cell placed in an _____________ solution neither swells or shrinks because the concentration of molecules outside the cell is the same as inside

isotonic

in a ________ solution, water molecules move into and out of the cell at the same rate

isotonic

proteins (like carrier proteins) that stick INTO the cell membrane either part way or all the way or through are called ______________ proteins

isotonic

what does osmosis use to help

it doesn't have help

what is the non polar tails made of?

lipids

what is an example of substances that use diffusion in cells

living/nonliving

example of substance that use receptor-mediated endocytosis in cells

lysosomes

energy for active transport comes from a cell's

mitochondria

the cell organelles that burns glucose and provides ATP for active transport are the

mitochondria

movement of _______ across a membrane is called ________

molecules; transport

placing an animal cell in a hypotonic solution will cause water to ___________

move into the cell

osmosis

moves water across membranes

example of substance that use endocytosis in cells

one cell eating another

____________ transport does NOT REQUIRE energy

passive

is diffusion active or passive transport?

passive

is facilitated diffusion active or passive

passive

is ion channels active or passive

passive

is osmosis active or passive transport

passive

moves molecules from an area of high concentration to an area of low concentration

passive transport

moves molecules with the concentration gradient

passive transport

osmosis is an example

passive transport

the movement of a particle through the plasma membrane without the use of energy is called

passive transport

living and non living

passive transports

the carrier proteins that help in facilitated diffusion are _____________ proteins

peripheral

what is the polar head of a phospholipid made of?

phosphate

made of lipids

phospholipids

what does sodium potassium use to help

pumps

why does salt dehydrate?

salt water is hypertonic to the cell and it pulls water out

allows only certain substances to move in and out

semi permeable

a _________-__________-______ uses ATP to move three Na+ ions out of a cell while it moves two K+ ions in.

sodium-potassium-pump

The substance that dissolves to make a solution is called the

solvent

what is an example of substances that use facilitated diffusion in cells

sugar

if the solute is unable to pass through the dividing membrane, what will happen?

the water level will rise on the right side of the tube

___________ = _______________ = ________________ = ____________

transport protein = channel protein = carrier protein = ion channel

a small membrane sac used to transport substances during exocytosis & endocytosis =

vesicle

what does endocytosis use to help

vesicle

what does exocytosis use to help

vesicle

what does receptor-mediated endocytosis use to help

vesicle

what is an example of substances that use osmosis in cells

water