Cell Transport Quiz

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Molecular Pumps is when

a cell uses energy to pump molecules across the membrane against the gradient, through a protein channel

transport proteins act as

a channel or carrier

Is Exocytosis active or passive?

active

Is active transport active or passive?

active

Concentration

amount of solute dissolved in a solvent

Movement of water out of a cell means

cell shrivels

identical water to cells cytoplasm means

cell stays the same/doesn't expand/shrink

movement of water into a cell means

cell swells/expands

How does Osmosis help maintain homeostasis

controls blood pressure by regulating blood volume

solvent

does the dissolving

equilibrium

equally concentrated on both sides of the membrane (inside/outside)

Active Transport requires

extra energy to be spent to bring materials into the cell or expel materials out of the cell moving from low to high concentration against the concentration gradient.

low concentration water means

high solute concentration

high concentration water means

low solute concentration

What are examples if active transport

molecular pumps, exocytosis, endocytosis

Passive transport requires

no extra energy by the cell because molecules move from high concentration to low concentration areas down the concentration gradient

Is Osmosis active or passive?

passive

Is facilitated diffusion active or passive?

passive

Is simple diffusion active or passive?

passive

What does selective permeability mean?

picky about what goes in/out

thins that can not easily pass through the cell membrane include

polar and/or large molecules

How does facilitated Diffusion help maintain homeostasis

regulates blood sugar

Molecular pumps allows a cell to

remove waste quickly

The cell membrane is

selective permeable

Osmosis is the

simple diffusion of water across a cell membrane

What are examples if passive transport

simple diffusion, facilitated diffusion, and osmosis

Simple diffusion is

spreading out of molecules across a membrane until equilibrium is reached

things that can easily pass through the cell membrane include

things that are small, non-polar, hydrophobic, water, and/or neutral.

facilitated diffusion

transport proteins help to facilitate the diffusion of molecules that normally couldn't pass through the cell membrane

Solution

uniform mixture of two or more substances

Exocytosis

uses vesicles to export materials out of the cell

Edocytosis

uses vesicles to move large particles into the cell

Hypertonic solution is when

water is lower than the cells cytoplasm

solute

what gets dissolved

How does Exocytosis help maintain homeostasis

By exporting materials out of the cell through the cell membrane

How does Endocytosis help maintain homeostasis

By importing materials into the cell through the cell membrane

How does Simple Diffusion help maintain homeostasis

Carries water across the cell membrane

How does Active Transport help maintain homeostasis

Muscle Contractions and signal conduction


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