Which method often results in colonies developing down throughout the agar and some colonies on the surface?
A. spread plate
B. streak plate
C. pour plate
D. All of these choices are correct.
Answer: C
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The four eras each represents an equal time of Earth's history.
A. True, the four eras are each roughly the same length of time B. False, the four eras are vastly different in their durations
Characteristics of headwaters include:a
fast flow, high oxygen, and free-floating vegetation. b. fast flow, low oxygen, and free-floating vegetation. c. fast flow, high oxygen, and streamlined animal bodies. d. fast flow, high oxygen, and free-floating vegetation. e. slow flow, high oxygen, and free-floating vegetation
What do the production of wine, beer, yogurt, and sauerkraut all have in common?
A. Microorganisms grow in each of these foods producing acids which are responsible for the flavors. B. All of these products are made by microbial fermentation of natural sugars in the food starting material. C. All of these products are the result of yeast acting on natural sugars in the food starting material. D. All of these choices are correct.
The term "junk DNA" is no longer used because these regions of DNA have been found to be associated with all of the following except
A) miRNAs. B) speciation. C) binding sites for regulatory regions. D) All of the above have been associated with "junk DNA." E) None of the above have been associated with "junk DNA."