A useful scientific hypothesis is one that is:

A) proven.
B) testable.
C) conclusive.
D) accurate.
E) abstract.


B) testable.

Biology & Microbiology

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The wavelength of light used and the numerical aperture governs ________.

A. resolution B. contrast C. magnification D. size of the field E. illumination

Biology & Microbiology

The human heart ____

a. contracts as a result of electrical stimuli from the sinoatrial node b. contracts only as a result of nerve stimulation from the central nervous system c. is activated primarily through the autonomic nervous system d. contracts as a result of electrical stimuli from the atrioventricular node e. is independent of all nervous control

Biology & Microbiology

Animal parasites can be either ecto- or endoparasites, whereas all plant parasites live inside the plant tissue as endoparasites

Indicate whether the statement is true or false

Biology & Microbiology

An organism with a diploid chromosome number of 46 will produce ________ combinations of chromosomes at the end of meiosis

A) 7.04 × 1013 B) 8388608 C) 529 D) 23 E) 46

Biology & Microbiology