Which of the following methods to enumerate cells often requires specialized staining to observe non-pigmented bacteria?
A) spectrophotometry/turbidity
B) spread-plating
C) microscopy
D) spread-plating, turbidity, and microscopy
Answer: C
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In many soils there is more than enough phosphorus to support plant growth, but it is tightly bound to soil particles and thus largely unavailable. Which of the following are potential solutions to this problem for vascular plants?
(Select all correct answer options.) A. form symbiotic relationships with mycorrhizae B. form symbiotic relationships with bacteria C. pump H+ into the soil D. raise soil pH
Features that contributed to success on land include __________ and __________ (two types of vascular tissues). Fill in the blank(s) with the appropriate word(s)
In DNA profiles
A. the bands are derived from variation in restriction cutting sites of DNA. B. ideally, the pattern is unique for all individuals except identical twins. C. variations in short tandem repeats produce the banding pattern. D. all of these are true. E. none of these are true.
The mass, controlled culture of microbes to produce desired organic compounds is ________.
A. bioremediation B. biotechnology C. fermentation D. biosynthesis