Among the organisms listed here, which are thought to be the closest relatives of fungi?
A) animals
B) vascular plants
C) mosses
D) brown algae
E) slime molds
Answer: A
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Which of the following species concepts is described by a complex group of populations that are not in direct physical or reproductive contact, but do exchange genetic material through linking populations of the same species?
A. Ring species B. Ecological species C. Evolutionary species
Plant cells have a ridged cell wall. How do plant cells expand, and how important is cell expansion to plant growth?
What will be an ideal response?
What is the function of nucleosomes?
a. To prevent DNA strands from tangling. b. To help DNA replicate. c. To make RNA synthesis possible. d. To prevent RNA from tangling with DNA during transcription. e. To prevent histones from tangling
You look outside and realize that your grass needs to be mowed. You pick up the container of gasoline and see that you have approximately a third of a gallon left. You hypothesize that this amount will be enough to mow your entire lawn. Unfortunately, half way through mowing your lawn you run out of gasoline. You grumble and think to yourself that the next time you mow the lawn, you hypothesize that you will need to have at least two-thirds of a gallon of gasoline available. How did the results of your lawn-mowing experience influence the validity of your new hypothesis for future gasoline needs?
A. Your hypothesis was supported by trial and error. One more trial added to your data set. B. The hypothesis was invalidated by your experimental evidence. C. Your prediction of future gas needs is based on experimental data and therefore increases the validity of your hypothesis. D. Your prediction proved that your hypothesis is correct.