Which of the following are important biotic factors that can affect the structure and organization of biological communities?
A) precipitation, wind
B) nutrient availability, soil pH
C) predation, competition
D) temperature, water
E) light intensity, seasonality
Answer: C
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Possessing the entire sequence of a particular human genome may not be as useful as we think. Why not?
A. Every human genome is different enough that knowing ONE human's DNA sequence can't tell us almost anything about ALL humans. B. It's not the DNA sequence that matters-we need to know the mRNA sequence of the human genome. C. Due to the presence of introns/exons, and splicing of RNA after transcription, the DNA sequence doesn't necessarily tell us the exact number/type of proteins that will eventually be made from it. D. The amount of "junk DNA" present in the human genome masks any useful genetic information that we'd like to obtain.
One of the earliest uses of biotechnology was
A) creating transgenic organisms. B) creating bacteria that synthesized human insulin. C) extracting and using biochemicals from microorganisms. D) using yeast to ferment fruit into wine.
Why is morphological convergence not a good explanation for vertebrate forelimbs? What will be an ideal response?
Which one of the following is/are located in the tonsils to filter out many of the microorganisms that enter the throat?
A) thymus B) adenoids C) lymphocytes D) platelets E) red blood cells