Which of the following is NOT an innate body defense?
a) complement
b) the skin and mucous membranes
c) antibodies
d) lysozyme
Answer: c) antibodies
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Phagocytes interact speedily and effectively with pathogens because they have evolved specialized molecules called pattern recognition receptors (PRRs) that interact directly with PAMPs
Indicate whether the statement is true or false.
In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between good _____ that can be easily distinguished based on appearance
A. hybridization; morphospecies B. hybridization; ecological species C. allopatric speciation; ring species D. polyploidy; evolutionary species E. polyploidy; ring species
Meiosis _____ the parental chromosome number
a. doubles b. halves c. maintains d. mixes up e. quadrupils
What is the first step in urine formation? a. Glomerular filtration b. None of these choices
c. Urine concentration d. Tubular reabsorption e. Tubular secretion