Reproductive systems with external fertilization are most common in
A) terrestrial animals.
B) populations with many more males than females.
C) animals that are widely dispersed.
D) aquatic animals.
Answer: D
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Blood cultures collected for the recovery of N. gonorrhoeae or N. meningitidis require:
a. no special methods. b. more than 0.025% sodium polyanethol sulfonate (SPS). c. transfer from Vacutainer tubes to culture broth within 1 hour of collection. d. less than 0.025% SPS.
Which of the following is a male reproductive structure found in plants?
A. archegonia B. pistil C. pollen cone D. megaspore
Who played a decisive role in the refutation of theory of 'Spontaneous Generation'?
A. Ignatz Semmelweis B. Alexander Fleming C. Louis Pasteur D. Robert Koch E. Joseph Lister
Heavy metal and oxidizing agent disinfectants damage (DNA/enzymes/membranes), interfering with microbial metabolism.
Fill in the blank(s) with the appropriate word(s).