CLowe Cell Transport

In a cell, what is the function of the cell membrane?

• Produce energy for the cell
• Store genetic information
• The site of photosynthesis

• Regulate the movement of substances

Tags

NGSS.MS-LS1-2

Osmosis involves the movement of water molecules across a cell membrane. Diffusion

involves the movement of substances other than water across a cell membrane. In both of

these processes, substances move from an area of high concentration to an area of low

concentration without requiring energy. Thus, both diffusion and osmosis are forms of?

• Active transport
• Passive transport
• Facilitated diffusion
• Endocytosis

Based on the principles of diffusion, in which direction is the indicated solute particle most likely moving?

• Into the cell because there is less pressure in the cell

• Out of the cell because particles move to a lower concentration

• It does not move
• In a random direction

Dylan is completing an experiment in science class. The teacher gave Dylan a raw egg that had the shell removed. The egg is surrounded by a membrane. Dylan gently placed the egg into a solution. This is a diagram of the concentration of water molecules in the egg and in the solution.

Based on the diagram, what will happen to the egg?

• The egg will remain the same size.
• The egg will swell and potentially burst because water molecules will move into it.

• The egg will shrink because water molecules will move out of it.

Osmosis is the process in which _______ diffuses across a cell membrane

• glucose
• oxygen
• water
• carbon dioxide

Homeostasis refers to

• A mixture or solution that is the same throughout.

• The similarity of genetic traits to one another.

• The effect of natural selection on evolution.

• The tendency of a cell to maintain a stable internal environment.

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-6

Cell membranes are selectively permeable, this means that __________.

• They only allow water to pass through
• They block all substances from passing through
• They allow all substances to pass through
• They allow certain substances to pass through while blocking others.

Tags

NGSS.MS-LS1-2

Through the process of _______, materials move across a cell membrane from an area of higher concentration to an area of lower concentration.

• diffusion
• cellular respiration

• active transport
• friction

What is the name of the lipid bilayer that is pictured?

• Mitochondria

• Nucleus

• Cell Membrane

• Chloroplast

Tags

NGSS.MS-LS1-2

A process by which material inside a cell is packaged and excreted out of the cell

• Apoptosis
• Exocytosis
• Mitosis
• Endocytosis