Which two countries are both likely to have prevailing winds blowing from west to east?
A. Panama and Brazil
B. the United States and Panama
C. the United States and Argentina
D. Canada and Brazil
Answer: C
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Why is antigenic drift a problem for the immune system?
A. It requires a new, primary response by B cells. B. The ability of MHC to present antigen is affected. C. T cell receptors may not recognize the altered antigen. D. Two answer options are correct: It requires a new, primary response by B cells AND T cells may not recognize the altered antigen.
Single nucleotide polymorphisms (SNPs) are organized into blocks called ____ and are inherited together
a. haplotypes b. chromosome assemblies c. DNA assemblies d. multifactorial genes e. threshold groups
The notochord persists into adulthood in all chordates
Indicate whether the statement is true or false
Four of the following might be a response to rising body temperature. Which one is the exception?
A. Increased rate of breathing B. Decreased secretion of certain hormones C. More sweat D. Reduced blood flow to skin E. Increased rate of breathing