An inflammation-causing signal released by mast cells at the site of an infection is _____

A) an interferon
B) lymphatic fluid
C) histamine
D) mucus
E) sodium ions


Answer: C

Biology & Microbiology

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In genomic imprinting:a

a gene is imprinted in the progeny, depending upon the phenotype of the parent. b. the expression of a gene depends on the parental phenotype. c. a gene is imprinted in the progeny, depending upon the age of the parent. d. the expression of a gene in the progeny depends upon which parent the gene is inherited from. e. only dominant traits are expressed.

Biology & Microbiology

Why do free-living bacteria, such as Escherichia coli with 4000 genes, have more genes than intracellular bacteria?

What will be an ideal response?

Biology & Microbiology

A confidence interval can be constructed for which of the following population parameters?

A. Population standard deviation B. Population variance C. Population mean D. All of the answers are correct.

Biology & Microbiology

More than two-thirds of people infected with HIV in the world live in the ________ region of Africa, and the ________ are more commonly infected than ________

a. Saharan / men / women b. Saharan / women / men c. sub-Saharan / men / women d. sub-Saharan / women / men

Biology & Microbiology