Cell transport

Question 1

What things do cells need to transport

Answer 1

IN- Nutrients(glucose), water, oxygen, amino acids, ions
OUT- waste products, hormones, enzymes, other proteins

Question 2

Types of cellular transport

Answer 2

passive transport-w/o energy
active transport-w energy

Question 3

Types of passive transport (w/o energy)

Answer 3

diffusion and osmosis

Question 4

Types of active transport (w energy)

Answer 4

sodium (potassium pump), endocytosis and exocytosis, phagocytosis and pinocytosis

Question 5

What is energy

Answer 5

Energy comes from the molecule ATP (adenosine triphosphate) which is a nucleotide

Question 6

What’s diffusion

Answer 6

The movement of particles from areas of high concentration to areas of low concentration

Question 7

What’s facilitated diffusion

Answer 7

Larger molecules, such as glucose and amino acids, and ions, such as NA+, cannot cross the phospholipid layer

Question 8

Red blood cells-Hypotonic

Answer 8

cells swell and eventually burst. Surrounding fluid is less concentrated than the cellular fluid

Question 9

Red blood cells-Hypertonic

Answer 9

Shrivelled cells.
Surrounding fluid is more concentrated than the cellular fluid.

Question 10

Red blood cells-Isotonic

Answer 10

Normal cells.
Surrounding fluid is equal concentration to cellular fluid

Question 11

Active transport
Why would a cell need to use energy to move substances/

Answer 11

Some forms of transport require the movement of substances against a concentration gradient

Question 12

Exocytosis

Answer 12

Material is exported out of the cell via secretory vesicle. Exocytosis is important in removing waste materials from the cell and in secreting cellular products

Question 13

What is Endocytosis

Answer 13

Material is imported into the cell via a secretory vesicle. Endocytosis is important because some molecules can’t pass through the plasma membrane naturally

Question 14

Exocytosis steps

Answer 14

step1. vesicle containing products move to the cell plasma membrane
step2. vesicle fuses with the plasma membrane
step3. contents of the vesicle are exported out of the cell

Question 15

Phagocytosis (type of endocytosis)

Answer 15

The cell’s plasma membrane surrounds a molecule, such as a food particle, in the extracellular environment and buds off to form a vacuole that contains a molecule. The molecule is then digested by enzymes

Question 16

Pinocytosis (type of endocytosis)

Answer 16

Same as phagocytosis except the cell’s membrane surrounds droplets of fluid containing dissolved solutes

Question 17

Pinocytosis steps

Answer 17

step1. Cell membrane surrounds droplets of fluid
step2. cell membrane closes around the fluid droplets
step3. vesicle containing fluid droplets with dissolved solutes is drawn into the cell