Competition among individuals of different species is called
A. interspecific competition.
B. intraspecific competition.
C. derived competition.
D. basal competition.
E. commensalism.
A. interspecific competition.
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You experimentally change the DNA sequence directly upstream of a start codon of an operon in E. coli to investigate the function of this region of DNA
Analysis reveals that after the change the same amount of mRNA is made from the operon, but there are very few proteins made from the operon. What is the most likely function of the DNA sequence that you changed? A) The DNA sequence likely functions as a ribosome-binding site. B) The DNA sequence likely functions as a promoter. C) The DNA sequence likely functions as a termination sequence. D) The DNA sequence likely functions as in transcriptional regulation.
Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the
laboratory with increasing amounts of the chemical for one week and then measure their viability. What is the experimental variable for this experiment?
a. chemical X b. fish c. river d. farming e. water
According to the theory of evolution, what characteristics do all living organisms share suggesting that all life-forms on Earth arose from a single ancestor?
A) They share a common organic chemistry. B) They have DNA within their nucleus. C) They exhibit the same basic cell wall. D) They perform the same mode of reproduction.
There is an article in your local newspaper about an upcoming Biodiversity Day event at your university. Because, after studying biology, you understand why it's important to conserve biodiversity, you plan to attend
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