Bacterioplankton (floating bacteria) use ________ as a sulfur source for protein synthesis.
What will be an ideal response?
dimethylsulfonopropionate
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Which of the following statements about plant and animal development is false?
A. Cell division occurs in discrete regions within the plant body, but tissue differentiation occurs throughout the plant body. B. Cell differentiation and growth occurs throughout the developing animal body. C. Animal cells move during development, whereas plant cells do not. D. In both plants and animals, signaling molecules induce cell differentiation. E. Animal embryos pass through a gastrula stage, whereas plant embryos do not.
An application of pharmacogenomics is the study of ____ for determining the appropriate dosages of certain drugs in
specific patients.
a. drug metabolism genes b. body size c. blood volume d. trial and error methods e. drug interactions
In an experiment, which of the following is not generally a true statement?
A. It is important to standardize aspects of an experiment that might affect the outcome, other than the independent variable. B. The larger the sample size the more reliable the results. C. Without the proper control an experiment is not valid. D. None of the answer choices is correct. E. The smaller the sample size the more reliable the results.
A photoautotrophic unicellular organism with a shell made of silica is most likely a(n) ________
A) apicomplexan B) foram C) dinoflagellate D) diatom