In humans, male gametes are called ________, while female gametes are called ________.
A. sperm; eggs
B. pollen; eggs
C. eggs; sperm
D. eggs; pollen
Answer: A
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The ________ is a factor-independent termination site found in the leader region of certain operons, which, under the influence of ribosome behavior, controls the continued transcription of that operon.
A. terminator B. operator C. attenuator D. modulator
The most predominant anaerobe isolated in animal bites is:
a. Veillonella spp. b. Clostridium spp. c. Prevotella spp. d. Fusobacterium spp.
Apple maggot flies appear to be two separate races. What makes these races different?
A) They look different. B) They eat different foods. C) They have different allele frequencies. D) They mate at different times.
In which cellular organelle do the three posttranscriptional modifications often seen in the maturation of mRNA in eukaryotes occur?
A) Golgi B) lysosome C) nucleus D) mitochondrion E) cytoplasm