A thyroid gland cell secretes thyroid hormones into the blood. This is an example of ____
a. diffusion
b. endocytosis
c. exocytosis
d. osmosis
e. facilitated diffusion
ANSWER: c
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Which of the following is true of hydrogen peroxide?
A. It is a sterilant for inanimate objects and is quickly inactivated on living tissue. B. It leaves a toxic residue. C. It is broken down by catalase into water and oxygen. D. It is even more effective when used in combination with peracetic acid. E. It is a sterilant for inanimate objects and is quickly inactivated on living tissue; it is broken down by catalase into water and oxygen; AND it is even more effective when used in combination with peracetic acid.
Nucleosomes are comprised of how many molecules of histones?
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Roseola is a rare but very dangerous childhood viral infection. 2. Pityriasis' characteristic appearance is the result of a fungal infection causing changes in the production of melanin. 3. Cryptococcal meningitis can affect both healthy and immunocompromised individuals.
Four of the five structures listed below are sinks for
pressure-flow translocation. Select the exception. a. fruits b. roots c. mature leaves d. seeds e. rapidly growing tissue