The innate immune system recognizes pathogens by identifying unique microbial sequences not found on host cells. This system of recognition is called
A. AMP
B. PAMP
C. TLR
D. MHC
E. ROS
Ans: B. PAMP
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Transposons that insert at a new location while a copy remains at the original location are said to mediate ________ transposition.
A. replicative B. composite C. simple D. incomplete
Which of the following describes an organelle?
a. A membrane-bound sac within a cell b. A structure made of tissues operating together c. A group of similar cells carrying out the same function d. An individual living entity
Some of the "branches" of a phylogenetic tree do not extend to the end. What do these lines represent?
A. Species of unknown origin B. Extinct species C. Lineages that have not changed D. Convergent species
Small molecules can move between capillaries and interstitial fluid by _____
A. passive transport B. active transport C. endocytosis D. diffusion E. exocytosis