Immune system cells that are responsible for the recognizing neoantigens and targeting tumors are called ________
A) macrophages B) regulatory T cells
C) monocytes D) tumor-infiltrating lymphocytes
Answer: D
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In Griffith's experiments,
A. mice infected with live nonvirulent bacteria developed pneumonia and died. B. nonvirulent bacteria transformed the virulent bacteria into a nonvirulent variety. C. mice infected with heat-killed virulent bacteria and live nonvirulent bacteria developed pneumonia and died. D. mice infected with heat-killed virulent bacteria and heat-killed nonvirulent bacteria developed pneumonia and died.
Given basic information from observations of the orchid with a long nectary, and the moth with the long proboscis, what is the advantage to a plant like an orchid producing nectar over a plant like a pine tree that does not produce nectar?
A. Nectar provides a sticky surface for pollen to attach to, promoting fertilization. B. Nectar helps disperse pollen by water. C. Nectar helps disperse pollen by wind. D. Nectar provides food for the pollen and growing fruit. E. Nectar attracts animals that perform pollination.
Which of the following would be found within the Hazard Analysis and Critical Control Point guidelines for food safety?
A. Precise definitions to distinguish fruit juice from fruit nectar B. Parameters for oyster harvests based on water quality assessment C. Temperature requirements for pasteurization of milk D. All of these are found in the HACCP management program.
If a bottle of perfume were spilled in the corner of a large lecture hall, the students sitting near that corner of the room would very quickly smell the perfume. Over time, the students sitting in the far corner of the room would smell the perfume. What phenomenon has occurred to the perfume molecules that have entered the air?
a. osmosis c. active transport b. facilitated diffusion d. simple diffusion