Which of the following identifies a group of RNA viruses?
a. Poxviruses
b. Herpesviruses
c. Papovaviruses
d. Adenoviruses
e. Paramyxoviruses
e
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The total solute concentration of a solution of water and other substances (salts, proteins, etc.) is referred to specifically as its
A. osmolarity. B. tonicity. C. salinity. D. specific gravity. E. density.
Metagenomics may be useful because
A) it could be used to detect or predict human diseases. B) it will allow for the sequencing of entire bacterial species genomes. C) metagenomes do not change rapidly. D) metagenomes are not responsive to environmental changes.
Which of the following is TRUE of spirochetes?
A) They are peritrichous. B) They are Gram-positive. C) They are able to penetrate a host's tissues. D) They are obligate intracellular organisms. E) They are pleomorphic.
Which of the following is an example of positive feedback?
A) A rise in body temperature stimulates sweat. This causes the body to cool down to normal temp. B) Eating a sugary donut raises blood sugar. This stimulates the pancreas to release insulin. C) Your blood pressure falls below normal, so the nervous system increases heart rate to bring blood pressure back to a normal range. D) During childbirth, increasing levels of oxytocin hormone is released to increase the strength of uterine muscle contractions.