How do coronaviruses differ from togaviruses?
A) Coronaviruses have an envelope.
B) Coronaviruses are RNA viruses.
C) Coronaviruses have helical capsids.
D) Coronaviruses contain positive RNA.
E) Coronaviruses individual capsids can be visualized.
C
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At which point on the phylogeny shown did the amnion first appear?
A. C B. A C. B D. D E. E
Explain the difference between primary and secondary growth
What will be an ideal response?
Whittaker's classification included kingdom Monera, which included all prokaryotes. Why is this classification obsolete?
A. Based on fossil evidence, this group has been divided into three newly named kingdoms. B. The prokaryotes, which were included in this kingdom, are now included in Protista. C. Based on molecular data, Monera has been divided into the two distinct domains, Archaea and Bacteria. D. This kingdom now includes more organisms, so the name has been changed.
The total number of protons and neutrons of an element establishes its ________ number.
Fill in the blank(s) with the appropriate word(s).