Linking Pattern and Process
What will be an ideal response?
•What generates these diversity patterns?
•Hypothesis 1: Differences in current environmental factors (e.g. nutrients available, local chemistry).
•Hypothesis 2: Differences in historical exposures (e.g. microbes available to colonize).
•Need an experiment to separate these factors
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Which of the following best describes DNA's secondary structure?
A) beta-pleated sheet B) double parallel helical strands C) turn-loop-turn D) double antiparallel helical strands
________ and ________ groups are negatively charged functional groups of carbon, whereas the ________ group is a positively charged functional group.
Fill in the blank(s) with the appropriate word(s).
Cytological examination of resting and contracted muscle provides important support for our current model for how skeletal muscle contracts. This evidence includes the observation that during contraction the
A) Z lines move farther apart. B) lengths of the thick and thin filaments change significantly. C) microtubules disassemble. D) muscle fibers change color. E) H zone becomes smaller.
Why is using heat to speed up biological reactions problematic?
What will be an ideal response?