The diagram is a model of one way that materials move across the cell membrane. oxygen molecules are represented by two red circles. carbon dioxide molecules are represented by a gray circle with two red circles attached. the left hand side of the diagram shows the beginning concentrations of the two types of molecules. the right hand sides shows how the molecules have moved over time. which sentence best explains the movement of oxygen molecules over time? a. they move to an area with a higher oxygen concentration b. they merge with the cell membrane to form vacuoles c. they move to an area with lower oxygen concentration d. they become transport proteins in the cell membrane

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

the correct answer to this question is #5

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)