Which is incorrect about measles?
A. Vaccination is with an attenuated oral vaccine.
B. Koplik spots appear before the characteristic rash.
C. Humans are the sole reservoir.
D. It is also known as rubeola.
E. It is one of the most contagious infectious diseases.
Answer: A
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A marine biologist is conducting research on animals that have a lophophore and two calcified shells. Based on this information, this animal must belong to the phylum
A. Mollusca. B. Phoronida. C. Ectoprocta. D. Bryopoda. E. Brachiopoda.
Explain why atoms such as helium, neon, and argon do not react with other atoms
What will be an ideal response?
Study of the proteome of a cell:
A) is furthered by mass spectrometry that provides a pattern characteristic of individual proteins B) all of these statements are true C) requires use of a computer to compare fingerprints of extracted proteins to those known proteins D) can reveal changes in protein composition within a cell over time E) is based on knowledge of the genome of a cell
The evolution of the vertebrate skeleton system
A) originated from a snake-like animal with limbs. B) enabled tetrapods to colonize land. C) made animals significantly taller.