When baroreceptors are stretched, nerve impulses from these receptors ultimately cause a(n) ________ in cardiac output
Fill in the blank(s) with correct word
decrease
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Which molecule is translated into an amino acid sequence?
A. Transfer RNA B. Primer RNA C. Ribosomal RNA D. Messenger RNA E. Ribozymes
Once a macrophage ingests a foreign antigen, how is the antigen presented?
a. The antigen is embedded directly into the cell membrane of the macrophage. b. The antigen is embedded in the membrane of a transport vesicle and released via exocytosis. c. The antigen is attached to a receptor protein, forming a receptor-antigen complex. d. The antigen is attached to MHC markers, forming a MHC-antigen complex e. The antigen becomes part of the T cell membrane.
The figure illustrates
a. DNA repair. b. semiconservative replication. c. the action of the ligases. d. the action of glycosylases. e. DNA hybridization.
Normally, complement proteins are active until the body is exposed to antigen. Indicate whether the statement is true or false