Antigen presenting cells
A. include dendritic cells.
B. include macrophages.
C. hold and present processed antigen on their cell membrane surface.
D. engulf and modify antigen to be more immunogenic.
E. All of these choices are correct.
Answer: E
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Spontaneous mutations include
A. Depurination, deamination, errors in DNA replication B. UV light, radiation, deamination, depurination C. UV light, radiation, deamination, errors in replication D. UV light, errors in DNA replication, deamination, depurination
What type of disease would not be identified by exome sequencing?
A) A disorder caused by a deletion of a large part of a gene B) A disorder that is caused by a mutation in a non-coding region of DNA found far away from the gene it affects C) A disorder caused by a mutation that causes one amino acid to be switched for another amino acid D) A disorder caused by a mutation that causes amino acids to be added to a protein
Bacteria are able to respond quickly to their surroundings, such as in the presence of an abundant food source. This isbecause:a
genes for functionally related enzymes are regulated together in operons. b. genes for functionally related enzymes are always constitutive. c. genes for functionally related enzymes are always under positive control. d. efficient protein degradation removes unneeded proteins quickly. e. all bacterial genes are constitutive.
Biochemical tests are useful in the identification of an unknown bacteria
a. true b. false