Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. This idea is a

A) theory that may need revision.
B) hypothesis that must be retested.
C) hypothesis that is incorrect.
D) theory that should be discarded.


Ans: A) theory that may need revision.

Biology & Microbiology

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If you placed the molecule in a vertical orientation, then from top to bottom, the two parallel strands of DNA are both oriented in the same, 5? to 3?, direction

Indicate whether this statement is true or false.

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Most animals fall into one of how many phyla?

A. 5 B. 9 C. 100 D. 35

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Why are pedigrees useful to track genetic disorders?

What will be an ideal response?

Biology & Microbiology

The area around a nucleus where an electron is most likely to be found is the:

A. energy level. B. orbital. C. polar space. D. electrical space.

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