The origin of mitochondria is attributed to a(n) ________
a. aerobic bacterium entering an aerobic eukaryotic cell
b. chloroplast entering a bacterium
c. aerobic bacterium entering an anaerobic eukaryotic cell
d. anaerobic bacterium entering an anaerobic eukaryotic cell
e. anaerobic bacterium entering an aerobic eukaryotic cell
c
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What characteristic would the R groups of amino acids have if they are located within the interior of biological membranes?
A. The R groups would be able to form ionic bonds. B. The R groups would be polar. C. The R groups would hydrophobic. D. The R groups would be hydrophilic. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about proteins in membranes? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Mercury can serve as a transcriptional activator in the regulation of certain genes
Indicate whether the statement is true or false.
The event called the Cambrian Explosion resulted in an abrupt increase in
A. geological activity. B. diversity of major animal groups. C. algal diversity. D. the number and size of glaciers. E. the amount of fish, of a single species, in the seas.
Synaptic integration means that ____.
A. positive or excitatory stimuli produce an excitatory postsynaptic potential B. the positive and negative ions neutralize each other C. excitatory and inhibitory signals are summed in a receiving neuron D. the adjacent neurons interact so that excitatory and inhibitory stimuli cancel each other out E. excitatory signals take precedence over inhibitory signals