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?
What will be an ideal response?
This question asked you to apply the definition of atomic mass to calculate an atomic mass. If you got
the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you
confuse atomic number (the number of protons alone) with the atomic mass (the sum of protons and
neutrons)?
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The evolution of life on Earth was made possible by ____
a. DNA b. organelles
c. an environment that favors oxygen photosynthesizers d. natural selection that favors efficient reproduction of organisms e. random mutations
The generally accepted explanation for the
movement of organic compounds in phloem is a. the cohesion-tension theory. b. the pressure flow theory. c. active transport. d. the transpiration-pull theory. e. root pressure.
Which of the following phyla do not develop as protostomes?
a. flatworms b. molluscs c. annelids d. arthropods e. echinoderms
Which statement is false concerning STDs?
A) Bacterial STDs can be treated with antibiotics. B) Permanent infertility can be the result of an untreated STD. C) STDs are routinely tested for during all physical examinations. D) Most viral STDs can never be eliminated from the body.