Vials of microorganisms that undergo the freeze-drying process, called ________, will remain preserved and viable for years.
A. sterilization
B. pasteurization
C. desiccation
D. lyophilization
E. flash freeze
Answer: D
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You are scheduled to give a seminar to your fellow med school students, and have chosen to speak about the pituitary. What important points will you include? (Check all that apply.)
_____ The posterior pituitary is derived from the brain, while the anterior pituitary is not. _____ The anterior pituitary is derived from the brain, while the posterior pituitary is not. _____ The pituitary is a compound endocrine gland. _____ Each half of the pituitary secretes one important hormone. _____ Some pituitary hormones have sex-specific effects. _____ If there is too little iodine in the diet, the pituitary can grow into a goiter. _____ The pituitary is responsible for producing at least nine major hormones.
Two species of squirrels live on either side of the Grand Canyon. It is believed that a long time ago, before being separated by the canyon, they were the same species. This is an example of
A) mechanical isolation. B) temporal isolation. C) hybrid inviability. D) behavioral isolation. E) allopatric speciation.
Explain how systematics and Linnaean taxonomy differ
What will be an ideal response?
Sequences of DNA that are identical when read from the 5' to 3' direction on one strand and the 3' to 5' direction on the other strand are
A. restriction endonucleases. B. DNA polymerases. C. ligases. D. reverse transcriptases. E. palindromes.