Before Darwin
a. no one had conceived of biological evolution
b. Lamarck wrote about biological evolution, but had the mechanism wrong.
c. Malthus developed a theory of evolution.
d. Lamarck had the idea of natural selection, but was ignored.
e. Malthus demonstrated the progression of fossils in the rocks.
B
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____ obtain both energy and carbon from organic compounds
a. Photoautotrophs b. Chemoautotrophs c. Photoheterotrophs d. Chemoheterotrophs e. Decomposers
Darwin's theory of natural selection to explain evolution is also known as
A. descent with modification B. inheritance of acquired characteristics C. uniformitarianism D. catastrophism
You attempt deletion mapping of a part of the promoter region of a particular gene. You remove a short sequence of nucleotides. Once the altered DNA is transfected into cells, the cells are able to transcribe the transfected DNA in a normal fashion. What do you conclude?
a) The deleted sequence has a moderate level of importance in promoting transcription. b) The sequence that was removed is not an essential part of the promoter. c) The sequence that was removed is an essential part of the promoter. d) The sequence that was deleted is an important determinant of the ability to transcribe the gene.
Microbial molecules detected by phagocytes are called
A) TLRs. B) NODs. C) PAMPs. D) leukotrienes. E) prostaglandins.