Which of the following should I adjust on my microscope when the high power lens is in place, but the specimen I am viewing is not completely in focus?
a. Coarse adjustment knob
b. Fine adjustment knob
c. Iris diaprhagm
d. Stage
e. Condenser
Answer: b. Fine adjustment knob
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The smallest branches of ____ end with a large flame cell
a. nephrons b. hepatic tubules c. metanephridia d. Malpighian tubules e. protonephridia
Three college students purchased a bag of fresh-picked, unripened apples from a nearby orchard. Keeping the apples in a paper bag for several days, the apples ripened. This was a response to the plant hormone
A. auxin. B. ethylene. C. gibberellin. D. jasmonic acid. E. abscisic acid.
The number of DNA molecules in a duplicated
chromosome is a. one. b. undetermined. c. half that of an unduplicated chromosome. d. two. e. four.
________ and ________ mean the same thing
A) Clade; parsimony B) Parsimony; analogy C) Clade; monophyletic taxon D) Derived; ancestral