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Question
What does it mean for an environment to be isotonic?(1 point)
Responses

The concentration of solute in the environment is different from the concentration inside the cell.
The concentration of solute in the environment is different from the concentration inside the cell.

The concentration of solute is greater in the environment than inside the cell.
The concentration of solute is greater in the environment than inside the cell.

The concentration of solute in the environment and the concentration inside the cell are at equilibrium.
The concentration of solute in the environment and the concentration inside the cell are at equilibrium.

The concentration of solute is greater inside the cell than in the environment.
The concentration of solute is greater inside the cell than in the environment.
A cell is dropped into a saltwater solution and shrivels up. You infer that, compared to the cell, the type of saltwater solution is(1 point)
Responses

tonic.
tonic.

hypotonic.
hypotonic.

hypertonic.
hypertonic.

isotonic.
hypertonic.
If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?(1 point)
Responses

UUA
UUA

TAA
TAA

UAA
UAA

ATT
TAA
The correct answer is: The concentration of solute in the environment and the concentration inside the cell are at equilibrium.
To determine what it means for an environment to be isotonic, we need to understand the concept of osmosis. Osmosis is the process by which water molecules move across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration.
In this particular question, we are looking at the concentration of solute in the environment compared to the concentration inside the cell.
Option 1: The concentration of solute in the environment is different from the concentration inside the cell.
This option suggests that the concentrations are different, but it does not specify in which direction.
Option 2: The concentration of solute is greater in the environment than inside the cell.
This option suggests that the concentration of solute in the environment is greater, meaning there is a higher solute concentration outside the cell compared to inside the cell.
Option 3: The concentration of solute in the environment and the concentration inside the cell are at equilibrium.
This option suggests that the concentrations are at equilibrium, meaning the solute concentration is the same both inside and outside the cell.
Option 4: The concentration of solute is greater inside the cell than in the environment.
This option suggests that the concentration of solute inside the cell is greater, meaning there is a higher solute concentration inside the cell compared to outside the cell.
Now, in order to determine the correct answer, we need to recall the definition of an isotonic environment. An isotonic environment is one in which the concentration of solute is the same inside and outside the cell. This means that the correct answer is:
The concentration of solute in the environment and the concentration inside the cell are at equilibrium.