The ________ is the distance between the specimen and the objective lens when the specimen is in focus.
Fill in the blank(s) with the appropriate word(s).
working distance
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Which molecule is the main structural component of biological membranes?
a. starch b. triglyceride c. protein d. phospholipid e. steroid
Which is not done by ascomycetes? a. All of these are done by ascomycetes
b. Cause human yeast infections. c. Spoils fruits. d. Allows bread to rise. e. Runs fermentation to produce beer and wine.
Animals that have a ventral nerve cord during embryonic development are classified as chordates
Indicate whether the statement is true or false
Two bird species exhibit postzygotic isolation in that half of the hybrids formed between them are sterile. If Haldane's rule applies here, then the individuals that are sterile are likely to be:
a. female. c. young. b. male. d. old.