Cell Organelles, Cell Transport, Diffusion, Osmosis, Plant Cell, Animal Cells

This diagram shows cellular activity across a cell membrane.  Which two processes does this diagram most directly model?

• Energy conversions and synthesis of new molecules
• Synthesis of new molecules and homeostasis
• Transport of molecules and energy conversions
• Homeostasis and transport of molecules

The cellular process known as the sodium-potassium pump was discovered in the 1950s by Jens Christian Skou, a Danish scientist. This process is a form of active transport that moves three sodium ions to the outside of a cell for every two potassium ions that it moves into the cell. Which of these best explains why energy is needed for active transport?

• Ions are negatively charged.
• Ions are attached to large proteins.
• Ions are trapped inside the plasma membrane.
• Ions are moved against the concentration gradient.

Tags

NGSS.MS-LS1-7

ALL living cells have this in common

• Nucleus
• Cell Membrane
• Cell Wall
• Mitochondria

Tags

NGSS.MS-LS1-1

The difference in the concentration of a substance from one location to another is called 

• diffusion
• osmosis
• concentration gradient
• passive transport

Most active transport proteins use energy from the breakdown of:

• nucleus
• cell membrane
• ATP
• mitochondria

Tags

NGSS.HS-LS1-7

What is the name of the process in which molecules move from an area of high concentration to an area of low concentration across a selectively permeable membrane?

• Diffusion
• Osmosis
• Active Transport
• Facilitated Diffusion 

A can of air freshener is sprayed in the opposite side of the room.  Ten minutes later you start to smell the scent.  This is an example of 

• diffusion
• active transport
• endocytosis
• osmosis

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

Tags

NGSS.MS-LS1-2

This is a picture of

• Cell wall
• Cell membrane
• chloroplast
• mitochondria

Tags

NGSS.MS-LS1-2

The movement of molecules against a concentration gradient

• simple diffusion
• facilitated diffusion
• active transport
• osmosis