Which of the following is not true about diphtheria?
A. it is a zoonosis
B. humans can be healthy carriers
C. it is prevented with the DTaP vaccine
D. it is an upper respiratory infection
E. it can be transmitted via contaminated milk.
Answer: A. it is a zoonosis
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A. nervous B. epithelial C. muscular D. adipose E. cardiac
Land ecosystems lose nitrogen to the atmosphere through ____
a. decomposition b. ammonification c. soil leaching d. bacterial fixation e. denitrification
The cell walls of fungi are composed of:
a. cellulose. b. lipids. c. glycogen. d. chitin. e. chlorophyll
During this stage of mitosis, the nuclear envelope begins to break down and the spindle begins to form.
A. prometaphase B. prophase C. telophase D. anaphase E. metaphase