REHS Study Questions with All Correct Answers

REHS Study Questions with All Correct Answers Any living thing that is too small to see without the aid of a microscope is called a _____. - Answer-microorganism Yeasts and molds are two types of _____ that may be found in foods. - Answer-fungi TRUE OR FALSE: Some bacteria have the ability to form spores, which are extremely resistant to heat, cold, and chemical agents. - Answer-True If food is handled properly, bacteria are kept in the _____ phase and not allowed to grow. - Answer-Lag Microorganisms that grow optimally at ambient temperature but are also capable of growth at refrigeration temperatures are called _____. - Answer-psychrotrophs _____ can be used as a chemical additive to inhibit the growth of microorganisms. - Answer-Sodium nitrate, sodium benzoate, and calcium propionate TRUE OR FALSE: Most bacteria, including pathogens, will not grow at a water activity higher than 0.85. - Answer-False Food is considered to be "shelf stable" when the final pH is _____. - Answer-4.6 or below TRUE OR FALSE: Facultative anaerobes are microorganisms, including most pathogens, which require oxygen to grow. - Answer-False TRUE OR FALSE: Most yeasts and molds will produce obvious signs of spoilage, whereas the presence of bacterial pathogens in food may not be noticeable. - Answer-true A foodborne illness caused by the ingestion of non-invasive bacteria that produce toxins in human intestines is classified as a _____. - Answer-toxin-mediated infection