Histology is the study of
(a) cells.
(b) organelles.
(c) tissues.
(d) organisms.
(b) organelles.
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Evolutionary biologists often use the 16S rRNA gene sequences of prokaryotes to determine genealogical relationships between them. Because these sequences are highly conserved, differences between them are notable and useful for this kind of analysis. While sequencing bacterial endosymbionts from various plants in 1992, results showed that some of these bacteria displayed a lot of similarity in their rRNA sequences, others less, and others very little similarity. The scientists determined that the most likely explanation was that those with the most similarity shared a more recent common ancestor than those with less similarity. Which principle did the scientists use to arrive at this conclusion?
a. conductive reasoning b. natural selection c. maximum parsimony d. proteomics
Which of the following is TRUE about energy
releasing chemical reactions?
a. they all require ATP to proceed. b. the activation energy required is greater than for energy requiring chemical reactions c. the reactants have more energy than the products d. the reactants have the same amount of energy as the products e. the reactants have less energy than the products
Tendons attach ________ to bone
Fill in the blank(s) with correct word
Which of the following statements is NOT correct regarding nonrenewable fuel resources?
A. Burning these nonrenewable fuels contributes to global warming. B. Burning these nonrenewable fuels contributes to acid rain. C. Extracting and transporting these fuels has negative ecological impacts. D. Oil harms species when it leaks from pipelines, ships, or wells. E. Nonrenewable energy sources do not produce greenhouse gases.