Excessive acid produced by the stomach can erode a hole, called a(n) ________, in the lining of the stomach.

Fill in the blank(s) with the appropriate word(s).


ulcer

Excessive acid produced by the stomach can erode a hole, called an ulcer, in the lining of the stomach.

Biology & Microbiology

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The peacock butterfly experiment demonstrated that ________

a. only spots had any measurable effect on the number of butterflies killed b. sound was more important than spots in butterfly defense against predatory birds c. spots were more important than sound in butterfly defense against predatory birds d. sound had no effect on the number of butterflies killed

Biology & Microbiology

Which of the following describes how the hygiene hypothesis is related to type I hypersensitivity reactions?

A) Up to 30 percent of people in undeveloped countries suffer from allergic rhinitis. B) Food allergies have increased 3-fold in chronically poor families as compared to wealthy families in the United States. C) Children living on a farm are 25 percent more likely to experience seasonal allergies than children living in a large city. D) Between 1997 and 2011, the incidence of food allergies in the United States increased by 50 percent. E) Wealthy individuals are 10 times more likely to experience anaphylactic shock as compared to someone raised in an orphanage during adolescences.

Biology & Microbiology

. Former president Ronald Reagan once commented at a press conference that the best way to combat the spread of AIDS in the US was to prohibit everyone from having sexual contact for 5 years

What would be the success of such a program if it were possible to carry out? A. It would 'cure' the population of HIV/AIDS. Everyone that had it would die off, and no new cases would occur, since sexual contact is the only mode of transmission for this virus. B. It would be a failure-this 'program' wouldn't eliminate IV drug use or transmission of HIV from mother to child. Sexual transmission isn't the ONLY mode of transmission for this virus. C. It would be a failure-many HIV positive individuals survive for longer than 5 years, even without treatment (sometimes without even realizing they're positive). Once sexual contact resumed, sexual transmission would also resume. D. It would be a failure-this 'program' wouldn't eliminate IV drug use or transmission of HIV from mother to child. Sexual transmission isn't the ONLY mode of transmission for this virus, AND many HIV positive individuals survive for longer than 5 years, even without treatment (sometimes without even realizing they're positive). Once sexual contact resumed, sexual transmission would also resume.

Biology & Microbiology

The most common starting pathway for the breakdown of sugars is

A. respiration. B. fermentation. C. glycolysis. D. oxidation.

Biology & Microbiology