Cellular Processes Including Homeostasis and Transport of Molecules

The movement of particles from an area of high concentration to an area of low concentration is called:

• Diffusion
• Osmosis
• Plasmolysis
• Homeostasis

Which of the following statements about facilitated diffucsion is NOT true?

• It moves substances with the concentration gradient
• It is a form of active transport
• It utilizes channel proteins in the cell membrane
• It does not require cellular energy

Which of the following is a form of active transport?

• Osmosis
• Diffusion
• Facilitate diffusion
• Endocytosis

A fish is placed in a tank of water and it's cells soon begin to swell up with water. This means the water was a __________ solution compared to the fish.

• Hypertonic
• Isotonic
• Hypotonic
• Catatonic

Tags

NGSS.HS-LS1-3

Consider our dialysis tubing demo. Iodine could pass through the tubing, but starch could not. What property of cell membranes does this demonstrate?

• That membranes are made of lipid
• That membranes are semipermeable
• That membranes are electrically neutral
• That membranes are permeable

Which of the following describes homeostasis?

• keeps variables exactly at the set point

• organism's ability to maintain steady(stable) internal conditions

• acts to keep values outside of a desired range

• operates through positive feedback

Tags

NGSS.HS-LS1-3

Negative feedback loops ...

• are one way an organism can maintain homeostasis.

• are rarely found in healthy individuals

• respond by making deviations from normal even larger

• cannot be counteracted with medicine

Tags

NGSS.HS-LS1-3

What part of the negative feedback loop is what happens inside of the organism, as the result of the effector?

• Initiation event

• Response

• Receptor

• Effector

Tags

NGSS.HS-LS1-3

Which part of the feedback loop is a body part that makes a change to bring the system back to homeostasis?

• Effector

• control center

• response

• receptor

Tags

NGSS.HS-LS1-3

What detects that the system is outside of homeostasis and adjustments need to be made?

• effector

• response

• control center

• stimulus

Tags

NGSS.HS-LS1-3