Which tests detect anti-HIV antibodies?
A. ELISA and Western Blot
B. PCR and gene probe
C. Western Blot and PCRD.
Answer: A. ELISA and Western Blot
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Why are mycorrhizal fungi superior to plants at acquiring mineral nutrition from the soil?
A) Hyphae are one hundred to one thousand times larger than plant roots. B) Hyphae have a smaller surface-area-to-volume ratio than do the hairs on a plant root. C) Mycelia are able to grow in the direction of food. D) Fungi secrete extracellular enzymes that can break down large molecules.
The type of sediment limits the kinds of organisms that can live in a particular area
Indicate whether the statement is true or false
Why is the mouth of a culture tube passed through the Bunsen burner flame after removing and before replacing the cap?
What will be an ideal response?
All of the following factors influence the rate of photosynthesis EXCEPT
A) atmospheric CO2 levels. B) water availability. C) temperature. D) atmospheric N2 levels. E) light intensity.