Which is the correct order of protein mediators that are produced during an acute inflammatory response?
A. Chemotaxins, selectins, kallikreins, integrins
B. Integrins, kallikreins, selectins, chemotaxins
C. Kallikreins, chemotaxins, integrins, selectins
D. Selectins, integrins, chemotaxins, kallikreins
Answer: D
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The density of a population is defined as the ____
a. number of individuals in a population at a specified time b. number of individuals in a population at a specified place c. number of individuals per unit area or per unit volume of habitat d. size of the individual organisms per unit area e. number of individual organisms per family unit
Base pairing
a. occurs between identical bases. b. requires hydrogen bonds. c. takes place between sugars and phosphates on the two strands in a helix. d. explains the X-ray results from Rosalind Franklin. e. occurs between A and C.
What is one current limitation of whole-genome sequencing for personalized cancer treatment?
A) The human genome is too large to be sequenced for individual patients. B) Drugs may not exist to target the mutant genes that are identified. C) Whole-genome sequencing reveals only mutations in coding sequences, and regulatory mutations may also be important. D) The genomes of cells with abnormal karyotypes, such as cancer cells, cannot be sequenced reliably.
Which of these is a characteristic of Type I survivorship?
A) There is low survivorship for the very young. B) Most individuals survive to older age intervals. C) Survivorship is constant over the lifespan. D) Survivorship is high for the few individuals that survive to a certain age.