After the first exposure to an antigen, a ________ stimulates growth and multiplication of antigen-reaction cells
A) secondary innate immune response
B) primary adaptive immune response
C) phagocytic immune response
D) hyperactive cytotoxic response
Answer: B
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Cell differentiation occurs due to ____
a. unequal cytoplasmic divisions b. the removal of different genes in different cell types c. polarization of the cell d. the presence of the X and/or Y chromosome in the cell e. changes in gene expression in different cell types
Which model would predict the abrupt appearance of a new species in the fossil record, with little or no evidence of
intermediate forms? a. anagenesis b. gradualism c. microevolution d. paedomorphosis e. punctuated equilibrium
What are lichens?
A) A symbiotic association of algae and fungi B) A symbiotic association of algae and Archaea C) Algae D) Archaea E) Fungi
The physical characteristics of an organism, or its ________, are determined by its genetic makeup, referred to as its ________
Fill in the blank(s) with correct word