Alzheimer disease has two forms: the early onset _____________________ form with a strong pattern of familial inheritance, and the late onset _____________________ form
Fill in the blank(s) with correct word
familial; sporadic
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Following a meal glucose must move from the gut lumen where there is a high glucose concentration into the intestinal cell where there is a relatively low level of glucose. This movement is called
A. passive diffusion. B. facilitated diffusion. C. active transport. D. endocytosis. E. exocytosis.
The phosphorus cycle is a sedimentary cycle with essentially no gaseous cycle
Indicate whether the statement is true or false
A hypothetical condition in some domesticated fowl is identified phenotypically by patchy loss of feathers on the animals' backs
Although several factors, genetic and environmental, are found to be involved, only about 3% of any population with any of these factors are found with feather loss. Which of the following is a likely cause? A) continuous variation B) threshold of liability C) low mutation frequency D) high number of alleles in one of the genes E) high number of environmental effects
Methylene blue can be used to stain DNA because it
A) forms ionic bonds with DNA. B) changes the pH and therefore the structure of DNA. C) covalently bonds with DNA. D) makes DNA electron dense. E) is an effective fixing agent for nucleic acids.