Erosion of the gastrointestinal tract that results in a sore is called a ________
A) pore
B) chancre
C) diverticulum
D) peptic ulcer
D
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Chiasmata form during which phase of meiosis?
a. prophase I b. metaphase I c. telophase I d. prophase II e. metaphase II
Organisms that undergo asexual reproduction
a. produce offspring that are identical to each other and to the parent. b. are usually very complex. c. do not require energy to reproduce. d. produce offspring that are different from each other. e. require another organism to reproduce.
The pertussis (whooping cough) vaccine has virtually eliminated whooping cough in the United States
Indicate whether the statement is true or false
What is a sheet-like layer of cells with no extracellular matrix in between?
A. Connective tissue B. Adhering junction C. Tight junction D. Basement membrane E. Epithelial tissue