Defensive proteins can assist the immune response by ________
A) helping viruses reproduce
B) directly destroying pathogens
C) reducing inflammation
D) increasing lymph production
B
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Which step occurs first during transcription?
a. Free RNA nucleotides are added to an RNA chain. b. RNA polymerase unwinds DNA. c. RNA polymerase attaches to the promoter site. d. The new RNA strand is released from RNA polymerase. e. The introns are removed from the RNA strand.
Which of the following is NOT a function of the lymph vascular system?
a. collecting water and solutes from blood capillaries b. picking up fats absorbed by the small intestines c. being a major site for T and B cell activation d. transporting foreign materials to lymph nodes e. returning water and solutes to general circulation
Of the codons AAU, AUG, UAA, and UAU, which is considered a nonsense codon? What does this mean?
What will be an ideal response?
Consider the cladogram shown. Which pair of species shares the greatest number of derived characters (synapomorphies)?
A. 2 and 3 B. 2 and 4 C. 6 and 5 D. 1 and 4 E. 6 and 4