The usual vector for human monocytotropic ehrlichiosis is the
a) sandfly.
b) Lone Star tick.
c) Aedesmosquito.
d) Dermacentortick.
Ans: b) Lone Star tick.
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Which body system is directly responsible for protecting an animal from disease?
a) circulatory system b) immune system c) nervous system d) endocrine system
Which of the following is an accurate description of Mendel's Law of Segregation?
a) Individuals possess two copies of every gene in their somatic cells. b) Individuals can have different versions (alleles) of a gene in their somatic cells. c) When gametes are formed, there is only one copy of every gene in each gamete. d) Different pairs of homologous chromosomes will line up at the metaphase I plate independently from each other.
Amino acids are delivered in their appropriate order by
A) mRNAs. B) RNA-induced silencing complexes (RISC). C) ribozymes. D) rRNAs. E) tRNAs.
A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?
A) phosphate B) nitrogen C) guanine D) uracil E) thymine