Which description goes with number 2?
A) Carrier is contaminated but not infected.
B) Carrier has infection but it is not apparent.
C) Carrier transmits infection before or after the period of symptoms.
C) Carrier transmits infection before or after the period of symptoms.
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The human body requires about ____ of fat
each day to stay healthy.
a. 1 teaspoon b. 4 teaspoons c. 1 tablespoon d. 4 tablespoons e. 1 cup
Mutation of the A group gene in Arabidopsis
thaliana affects development in its flower’s a. first whorl only. b. second whorl only. c. third whorl only. d. first and second whorls. e. second and third whorls.
RT-PCR is a PCR technique used in amplifying DNA copies of mRNA
Indicate whether the statement is true or false
Food infections have incubation periods of days to weeks, whereas the incubation period for food intoxications is hours to days. Please select the true statements that explain this situation.
> In food infections, the microorganism has to grow in the infected human host, producing more toxins as it reproduces. > The elements that cause food intoxications, like arsenic and mercury, are extremely potent in tiny amounts causing a faster disease symptomology. > The gram-positive bacteria, the organisms causing food intoxications, grow much faster than gram-negative bacteria, the organisms causing food infections. > Food intoxications involve the ingestion of exotoxins produced by microorganisms in the food whereas food infections involve the ingestion of the microbial cells themselves.