What is the name for molecules that provoke a specific immune response?
A. antigens
B. lymphocytes
C. antibodies
D. lysozymes
A. antigens
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Which one of the following statements about horizontal gene transfer is false?
A. Horizontal gene transfer is also called lateral gene transfer. B. Horizontal gene transfer involves hitchhiking genes from other species. C. Horizontal gene transfer was common early in life, but is absent today. D. Gene swapping is evident in the human genome. E. The products of horizontal gene transfer often exist as transposons.
In temperate regions of the Northern Hemisphere, north-facing slopes are less humid than south-facing slopes
Indicate whether the statement is true or false
Obesity rates have been steadily rising since 1985. Discuss how this rising obesity rate may require an increase in the availability of health care services over the next decades
What will be an ideal response?
Although the most frequent forms of Down syndrome are caused by a random error, nondisjunction of chromosome 21, Down syndrome occasionally runs in families. The cause of this form of familial Down syndrome is ________
A) a maternal age effect B) a translocation between chromosome 21 and a member of the D chromosome group C) an inversion involving chromosome 21 D) a chromosomal aberration involving chromosome 1 E) too many X chromosomes