During the inflammatory response, dilation of blood vessels is caused by

A. nitric oxide.
B. histamine.
C. cytokines.
D. phagocytes.
E. both histamine and complement.


E. both histamine and complement.

Biology & Microbiology

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Which of the following statements about the consequences of global warming are true? Check all that apply.  

_____  The rate of global warming may be too great for populations to be able to adapt through natural selection. _____  Rising sea levels will be a consequence of global warming. _____  Global warming will cause a decrease in the incidence of diseases caused by mosquitoes. _____  The frequency of El Niño events may increase as a consequence of global warming. _____  Agricultural production will increase.

Biology & Microbiology

In plant cells, the middle lamella _____

A) allows adjacent cells to adhere to one another B) prevents dehydration of adjacent cells C) maintains the plant's circulatory system D) allows for gas and nutrient exchange among adjacent cells

Biology & Microbiology

Exon shuffling occurs during _____

A) splicing of DNA B) DNA replication C) meiotic recombination D) translation

Biology & Microbiology

DNA technology has revolutionized forensic science. Several unsolved cases have been solved with this type of evidence, and some convicted persons have been exonerated with DNA evidence. What is the type of technology shown in the image?

a) Gel Eletrophoresis b) Centrifugation c) DNA splicing d) Polymerase Chain Reaction

Biology & Microbiology