Why are carbohydrates, such as glucose, fructose, and galactose, so valuable as fuels?
A) A great deal of energy is stored in carbon-hydrogen bonds.
B) They burn much more cleanly and efficiently than other compounds.
C) Very little energy is required to form the bonds in hydrocarbons.
D) Carbon only bonds with hydrogen and, in doing so, creates an energy-rich compound.
E) All inorganic compounds are good fuels, but those with carbon contain more energy.
A) A great deal of energy is stored in carbon-hydrogen bonds.
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Identify the correct order of events for a person who has contracted an HIV infection.a. The immune system reduces the virus levels in the blood.b. HIV infected cells proliferate, increasing the number of infected helper T cells.c. Patient experiences mild flu-like symptoms.d. A deficiency in the number of helper T cells causes the patient to develop additional health problems.e. The blood contains a high amount of the virus.f. The virus mutates so it is not recognizable by the immune system.
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