Some protists have complex life cycles and change between the haploid and diploid state. This process is called

__________ of _________. Fill in the blank(s) with the appropriate word(s).


ANSWER: alternation; generations

Biology & Microbiology

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How do fossils provide evidence of evolutionary history?

A. Fossils provide an accurate account of the number of species that exist at any particular time. B. Older fossils are an excellent source of DNA from which we can construct molecular phylogenies. C. Fossils provide a record of extinct species. D. Fossils provide complete information on extinct species.

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Which of the following is an unusual event that occurs as trichomes differentiate?

a. DNA replication b. endoduplication c. cell expansion d. mitosis e. regulation of the cell cycle

Biology & Microbiology

Which of the below are types of serial surveys?

a. united states census b. behavior risk factor surveillance system c. national health interview survey d. all of the above

Biology & Microbiology

In an uncharged atom, the number of protons and ___________ must be equal.

A) electrons B) neutrons C) neurons D) ions E) particles

Biology & Microbiology