Some of the drugs used in chemotherapy work by
A. inhibiting cytokinesis.
B. producing kinases.
C. preventing spindle formation.
D. increasing telomeres.
E. causing cells to divide quickly.
Answer: C
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Place the following steps in the correct order to reflect how a plaque assay is done: _____ Plates from different dilutions are examined and plaques are counted. _____ Dilutions are mixed with the appropriate bacterial host. _____ Bacterial/sample dilution mixtures are plated on agar plates. _____ Several dilutions of sample to be assayed are prepare. _____ Plates are incubated to allow for plaque development.
Fill in the blank(s) with the appropriate word(s).
In mammals, one region has become especially important as a "relay center" for information passing from sensory structures to the cerebrum. What region is this?
A. pons B. cerebellum C. hypothalamus D. thalamus E. hippocampus
When a tourist buys a sand dollar at a beach shop, what are they buying?
A. A calcium carbonate shell secreted from the mantle B. Anendoskeleton of calcium carbonate ossicles C. A molted exoskeleton made of chitin D. An endoskeleton made of bone E.An endoskeleton made of cartilage
Virtually every food consumed by humans is originally derived from sunlight. This is easily seen in relation to plants and seeds, but the connection to meat is less clear. How is meat ultimately derived from sunlight?
a. Animals require sunlight to survive and thrive so the meat that people consume is supported by sunlight. b. Animals utilize the heat from the sun for body temperature which supports the metabolic processes necessary to make muscle tissue. c. The animals are fed a plant-based diet and use that energy (originally derived from the sun) to build the proteins that people consume when they eat meat. d. The animals are mostly diurnal and will only eat during the day. Thus, the sun provides the light needed to support this diurnal lifestyle.