Unit Test: Homeostasis
Flashcard
•
Biology
•
10th Grade
•
Practice Problem
•
Hard
Tiffany Dixon
FREE Resource
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24 questions
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1.
FLASHCARD QUESTION
Front
What type of transport does not require energy or a protein and moves molecules from high to low concentration?
Back
Passive transport
2.
FLASHCARD QUESTION
Front
The diffusion of water is called
Back
Osmosis
3.
FLASHCARD QUESTION
Front
The function of the cell membrane's lipid bilayer
Back
semipermable, allows only certain items in/out
Answer explanation
The cell membrane's lipid bilayer serves as a semipermeable barrier, allowing only certain items to pass in and out of the cell. This selective permeability helps maintain the cell's internal environment and regulate the exchange of substances with its surroundings. The other options, generating ATP, packaging items for transport, and producing proteins, are not the primary functions of the lipid bilayer.
4.
FLASHCARD QUESTION
Front
This must be true in order for diffusion to occur:
- molecules or particles must have different sizes
- special protein channels must ALWAYS be available
- there must be areas of different concentrations
- energy must be available
Back
there must be areas of different concentrations
Answer explanation
Diffusion is the passive movement of molecules or particles from an area of higher concentration to an area of lower concentration. For diffusion to occur, there must be areas of different concentrations, which creates a concentration gradient that drives the process. The other options are not necessary for diffusion to take place.
5.
FLASHCARD QUESTION
Front
When both sides of the membrane reach similar solute concentrations.
Back
equilibrium
Answer explanation
Equilibrium is the correct answer because it refers to the state when both sides of the membrane have reached similar solute concentrations. In this situation, there is no net movement of solute particles, and the system is considered to be in balance. Osmosis is the process that leads to equilibrium, while concentration and randomness are not directly related to this concept.
6.
FLASHCARD QUESTION
Front
Facilitated diffusion of water through a selectively permeable membrane
Back
osmosis
Answer explanation
Osmosis is the correct answer because it refers to the facilitated diffusion of water through a selectively permeable membrane. This process allows water molecules to move across the membrane from an area of higher concentration to an area of lower concentration, balancing the solute concentrations on both sides. The other options, pinocytosis, phagocytosis, and exocytosis, are not related to the diffusion of water through a membrane.
7.
FLASHCARD QUESTION
Front
During osmosis
Back
water moves from high to low concentration
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