Can a theory be proved wrong?
A. No, theories are the same as facts.
B. No, because there is no good way to test a theory.
C. Yes, a new observation or interpretation of data could disprove a theory.
D. Yes, theories are the same as hypotheses.
Ans: C. Yes, a new observation or interpretation of data could disprove a theory.
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Although similar in function, the eukaryotic ribosome is generally smaller and more complex than the prokaryotic ribosome.
Answer the following statement true (T) or false (F)
At high tide a coastal plant or animal cell will be in
Estuaries are locations where rivers flow into oceans, with tidal shifts changing the salt concentrations. Plants and animals that live in estuaries face a dilemma in maintaining water balance inside their cells. During high tide they are in salt water, while at low tide they are in fresh water. A. osmosis. B. an isotonic solution. C. a hypotonic solution. D. a hypertonic solution. E. equilibrium.
In eukaryotes, the 3' poly-A tail is attached to
A. the template strand of DNA. B. tRNA. C. poly-A polymerase. D. the ribosome. E. mRNA.
All known heritable symbionts of insects
a. can replicate outside of the hose. b. can become parasites of the host. c. cannot replicate outside of the host. d. are required for host replication.