Abdul, who is 6 years old and beginning his first day of school, comes into his classroom where some other children are eating peanuts. Within a few minutes he complains of dizziness and seems to be struggling to breathe. You suspect ________
A) chickenpox
B) anaphylactic shock
C) cancer
D) Kaposi's sarcoma
B
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Freddie is 8 months old and weighs 9 kilograms. He needs about ______ grams of protein per day.
What will be an ideal response?
Mannitol salt agar (MSA) only allows the growth of halophiles (salt-loving microbes). Among the halophiles, mannitol fermenters release acid that turns the pH indicator yellow; mannitol nonfermenters leave the medium red. Onto MSA you inoculate a halophilic mannitol nonfermenter and a nonhalophilic mannitol nonfermenter. Here the medium acts as a ________ medium.
A. selective and differential B. differential C. enrichment D. selective
Which subatomic particle contains the positive charge?
a. Both the neutron and electron b. Neutron c. Proton d. Electron e. Both the proton and neutron
Which of the following accounts for the fluid aspect of the fluid mosaic model of plasma membranes?
A) The individual phospholipid molecules are not bonded to one another, so the movement of certain proteins and lipids is possible within and through the bilayer. B) The plasma membrane is "fluid" because of the movement of substances across the membrane. C) One of the components of the membrane is water. D) The membrane is water soluble. E) The bilayer permits diffusion of certain lipid-soluble substances.