Molecules are composed of two or more ____________________ chemically ____________________ together. Fill in the blank(s) with the appropriate word(s)
atoms; bonded
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A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which only water can pass. They inject a 5M solution of glucose into the cell and then place the cell into a beaker containing 10M glucose. What effect do you expect to observe?
A. Water moves out of the cell B. Glucose moves out of the cell C. No net change in cell weight D. Water moves into the cell E. Glucose moves into the cell Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about osmotic concentration? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A population in biology refers to a group of organisms that
A. are different species. B. are genetically related. C. are the same species. D. live in the same space. E. cannot interbreed.
The acetylcholine receptor is a ligand-gated channel that produces
A. Hyperpolarization by allowing Na+ ions to exit the muscle fiber. B. Depolarization by allowing K+ ions to leave the muscle fiber. C. Depolarization by allowing Cl- ions to enter the muscle fiber. D. Repolarization by activating second messenger systems within the muscle fiber. E. Depolarization by allowing Na+ ions to enter the muscle fiber.
In all ecosystems, the biomass of primary producers is greater than the biomass of herbivores
Indicate whether the statement is true or false