Concept 2: Homeostasis and Regulation

Water will move out of a cell when the solution outside the cell is...

• Hypertonic

• Isotonic

• Hypotonic

• Ubertonic

Answer explanation

Hypotonic solutions will cause the opposite effect: water will move into the cell.

Tags

NGSS.HS-LS1-3

Water is at equal concentrations inside and outside the cell. What kind of solution is the cell in?

Movement of water into and out of the cell is referred to as...

• Molecular Pump

• Endocytosis

• Osmosis

• Facilitated diffusion

What type of cellular transport is pictured?

• Endocytosis

• Exocytosis

• Simple Diffusion

• Facilitated Diffusion

Answer explanation

The use of protein channels that are embedded in the membrane to move molecules into and out of the cell is known as facilitated diffusion.

Tags

NGSS.HS-LS2-3

When white blood cells encounter an invading pathogen, they surround it with their membrane and capture the pathogen to be destroyed. This is a type of cell transport known as...

• Endocytosis

• Exocytosis

• Diffusion

• Osmosis

The image shows the human birth process. Which type of feedback mechanism is represented in this process?

• Negative Feedback

• Positive Feedback

• Homeostatic Feedback

• Neutral Feedback

Tags

NGSS.HS-LS1-3

Which type of feedback is represented in the image?

• Negative feedback

• Positive feedback

• Homeostatic Feedback

• Neutral Feedback

Tags

NGSS.HS-LS1-3

What is happening at step 1 of the signal transduction pathway?

• The signal is sent back to its point of origin

• The signal is transported to achieve the necessary response

• A response is triggered by the original signal

• The signal is being received by the cell at the receptor protein

What is happening at step 2 of the signal transduction pathway?

• The signal is sent back to its point of origin

• The signal is transported to achieve the necessary response

• A response is triggered by the original signal

• The signal is being received by the cell at the receptor protein

What is happening at step 3 of the signal transduction pathway?

• The signal is sent back to its point of origin

• The signal is transported to achieve the necessary response

• A response is triggered by the original signal

• The signal is being received by the cell at the receptor protein