Adding salt and sugar can control the growth of certain bacteria but not fungi.
Answer the following statement true (T) or false (F)
True
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What brain region plays an essential role in the formation of declarative memories?
a. cerebrum b. cerebellum c. hippocampus d. thalamus e. hypothalamus
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. What is the relationship between the alleles for hair texture?
A. incomplete dominance B. wavy hair dominant to both straight and curly hair C. pleiotropy D. codominance
Which of the following becomes more abundant deeper into the conducting zone (from bronchi to bronchioles)?
A) cilia B) type I alveolar cells C) cartilage D) goblet cells E) smooth muscle
Some have claimed that the herb echinacea reduces the likelihood of catching the common cold. In many hundreds of studies, this claim has been refuted. Assuming these studies were properly conducted, which of the following is a scientifically responsible claim that an echinacea advocate could make in support of further research on this subject?
a) the effective drug dosage of echinacea was outside the range of the dosages given in the scientific studies b) the investigators were paid off by the drug companies c) the effective length of time needed for taking echinacea is longer than that provided in any of the scientific studies d) all of the answer choices are correct e) only the first and third answers choices are correct