Cell Membrane and Transport Review

Indicate whether the statement is true or false. Glucose and salt are too large of molecules to diffuse across a cell membrane.

• True

• False

Tags

NGSS.HS-LS2-3

Indicate whether the statement is true or false. The cell membrane is made up of a single phospholipid layer.

• True

• False

Indicate whether the statement is true or false. Passive transport sometimes requires the use of energy to diffuse bigger molecules across the membrane.

• True

• False

Indicate whether the statement is true or false. Cells in multicellular organisms can serve any purpose and are unspecialized.

• True

• False

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-2

NGSS.HS-LS1-4

Indicate whether the statement is true or false. The movement of water into or out of a cell produces a force called osmotic pressure.

• True

• False

Identify the choice that best completes the statement or answers the question. The model shows a substance crossing a cell membrane. Which of the following describes the process?

• The model shows the process of active transport because the solute particles are moving from an area of low concentration to an area of high concentration.

• The model shows the process of bulk transport because the solute particles are moving from an area of low concentration to an area of high concentration.

• The model shows the process of diffusion because solute particles are moving from an area of high concentration to an area of low concentration.

• The model shows the process of osmosis because the solute particles are moving from an area of high concentration to an area of low concentration.

A cell is placed in an isotonic solution. How does the cell maintain homeostasis in this environment?

• There is no movement of water molecules into or out of the cell because the concentrations of solute particles inside and outside the cell are the same.

• Water will move across the cell membrane to the inside of the cell because the cell has a higher concentration of solute particles than the solution.

• Water will move across the cell membrane to the outside of the cell because the solution has a higher concentration of solute particles than the cell.

• Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.

Tags

NGSS.HS-LS1-3

The illustration shows a model of the transport of solute particles from outside the cell to inside the cell. What type of cell transport is modeled?

• The model illustrates active transport because energy is required to move the solute particles from an area of lower concentration to an area of higher concentration.

• The model illustrates diffusion because solute particles are moving from an area of higher concentration to an area of lower concentration.

• The model illustrates facilitated diffusion because protein channels allow solute particles to cross the cell membrane.

• The model illustrates osmosis because water molecules are moving from an area of higher concentration to an area of lower concentration.

Which describes active transport, but not passive transport?

• requires cellular energy

• moves particles across the cell membrane

• moves particles from high concentration to low concentration

• particles diffuse directly through the lipid bilayer

Multicellular organisms contain organ systems. Which of the following BEST describes the organs in an organ system?

• The organs in an organ system are made up of similar cells.

• The organs in an organ system are made up of similar tissues.

• The organs in an organ system work together to perform a specific function.

• The organs in an organ system work together to perform all the functions a multicellular organism needs to maintain homeostasis.

Tags

NGSS.HS-LS1-2