I just found out that some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have _______ that do not work properly.
A. ribosomes
B. lysosomes
C. mitochondria
D. microtubules
B. lysosomes
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In mammalian cells, depurination occurs at a high rate. As many as 1 in 105 purines are lost from DNA in a 24-hour period. What repair mechanism is used to repair the DNA?
What will be an ideal response?
The atomic nucleus consists of
a. neutrons and electrons. b. neutrons only. c. protons and electrons. d. neutrons and protons. e. protons only.
If one nephron in the right kidney becomes blocked and unable to function,
A. the kidney would become non-functional. B. the person would die. C. urine formation would not be greatly affected because there are 1.3 million nephrons in each kidney. D. the kidney would no longer be able to create urine. E. the filtration and urination rates would decrease significantly.
Food allergies are a form of __________ hypersensitivity
A. Type IV B. Type III C. Type II D. secondary E. Type I