A mole becomes suspicious when it is greater than 6 mm in diameter. How big is 6 mm approximately?
A. about the size of a pencil eraser
B. about the size of a quarter
C. just barely visible, about the size of a pin prick
D. about the size of a nickel
E. about the same as one of the letters in this question
Answer: A
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Which of the following is NOT an antibody class in humans?
a. IgA b. IgD c. IgE d. IgF e. IgG
What type of cloning may be used to grow replacement human tissues and organs?
a. Reproductive b. Genetic c. Pharmaceutical d. Prophylactic e. Therapeutic
An example of a protist that reproduces sexually by conjugation is Paramecium
__________________ Indicate whether the statement is true or false.
Older roots can become extremely thick and woody as ________ accumulates during secondary growth.
A. Secondary phloem B. Sapwood C. Primary xylem D. Secondary xylem E. Primary phloem