After performing a Gram stain on a mixed culture of Gram-positive and Gram-negative cells, you realize that you
omitted the iodine step. What would you expect to see if you observed the slide under the microscope?
a. pink Gram-positive and purple Gram-negative cells
b. purple Gram-positive and pink Gram-negative cells
c. pink Gram-positive and pink Gram-negative cells
d. colorless Gram-positive and pink Gram-negative cells
e. colorless Gram-positive and colorless Gram-negative cells
ANSWER: c
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Indicate whether the statement is true or false.
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A. epididymis B. seminal vesicle C. testis D. vas deferens E. prostate gland
Playing catch with your young son, you blithely mention, “Wow, you must have excellent Ruffini endings.” He replies, “No, Mommy! My Ruffinis are beginnings!” Both of you laugh, but you explain that Ruffini endings are very helpful to humans catching balls. How do they help?
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Is it reasonable to conclude that the 45 kDa protein is involved in shell pigment production?
a. Yes b. No