Cell Transport

The sodium potassium pump in muscle cells pushes sodium and potassium molecules against the concentration gradient.  This is an example o

• molecules moving from an area of high concentration to low concentration

• molecules moving from an area of low concentration to high concentration

• diffusion

• 
  osmosis

Tags

NGSS.HS-LS1-3

The proton pump in nerve cells moves hydrogen ions from a low concentration inside the cell to a higher concentration outside the cell. What type of transport is this?

• Diffusion

• Osmosis

• Active transport

• Facilitated diffusion

The cell membrane wraps around a large food particle and pulls it into the cell, forming a vesicle. This process is an example of:

• Endocytosis

• Exocytosis

• Diffusion

• Osmosis

Which of the following is NOT a function of the cell membrane?

• Controlling what enters and exits the cell

• Helping the cell communicate with other cells

• Providing shape and structural support

• Producing proteins for the cell

A student places a semipermeable bag filled with 20% sugar solution into a beaker of distilled water. After 30 minutes, the bag increases in mass. What process is occurring?

• Diffusion

• Active transport

• Osmosis

• Exocytosis

Which type of transport requires energy from the cell?

• Diffusion

• Osmosis

• Facilitated diffusion

• Exocytosis

The golgi apparatus releases vesicles of proteins to be released by the cell membrane to the body.  This is an example of

• exocytosis

• membrane pumps

• phagocytosis

• 
  pinocytosis

Which statement explains why active transport requires energy from the cell?

• It moves molecules down their concentration gradient

• It only moves small molecules

• It moves molecules against their concentration gradient

• It moves water through a membrane

Which of the following describes how the cell membrane helps maintain homeostasis?

• It produces new DNA molecules

• It regulates what enters and leaves the cell

• It breaks down large food molecules

• It carries oxygen to other cells

Tags

NGSS.HS-LS1-3

A student places a dialysis bag filled with 10% salt solution into a beaker of distilled water. After 30 minutes, the bag gains mass.

• Water entered the bag by osmosis

• Salt left the bag by active transport

• Water exited the bag by diffusion

• Salt entered the bag by endocytosis

Tags

NGSS.HS-LS1-3