Which of the following statements is false?
a. The universe has a specific amount of energy.
b. One form of energy can be converted to other
forms of energy.
c. Whenever energy conversions occur, some
energy is converted to less concentrated forms.
d. Once energy is utilized, it disappears.
e. There are differences in the quality of energy.
Answer: d
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In Mendel’s hybridization experiments, the ratio of plants expressing dominant traits in the F2 generation was nearly 3:1, but never exactly the correct ratio. Ignoring any external confounding factors, what effect would you expect a larger sample size to have on the ratio of dominant to recessive traits expressed?
a. Larger sample sizes would have no effect on the ratio. b. The results would drift further from the expected ratio. c. The results would become more precise with more samples. d. Larger sample sizes would increase the risk of cross-contamination.
Approximately, what percent of unplanned
pregnancies end in induced abortions?
a. 5 b. 25 c. 50 d. 75 e. 90
Chloroplasts contain internal membranes that enclose the
What will be an ideal response?
Which of the following is a digestive hormone that causes the gallbladder to release stored bile?
A. HCl B. ATP C. CCK D. NAD E. GIP