About ____ couples are affected by infertility
a. 0.5% of
b. 1 in 6
c. 1 in 10
d. 1 in 100
e. 25% of
a
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Explain three reasons why bacteria form biofilms
What will be an ideal response?
Many algal species have life cycles consisting of alternating haploid and diploid generations. The most common life
cycle in green algae consists of organisms that are ____ in the haploid stage and ____ in the diploid stage.
a. unicellular; multicellular b. multicellular; unicellular c. unicellular; unicellular d. multicellular; multicellular e. colonial; colonial
What results would you expect if mitochondria are inherited uniparentally from the ? strain?
A) Some, but not all, yeast colonies found on the plate without chloramphenicol will also grow on the plate with chloramphenicol. B) All of the yeast colonies on the plate without chloramphenicol will also grow on the plate with chloramphenicol. C) Many yeast colonies will grow on the plate without chloramphenicol and no colonies will grow on the plate with chloramphenicol. D) No colonies will grow on either plate.
In examining water samples preserved in glass jars over the last century, you notice a steadily declining pH. What is the most likely general explanation?
A. gradual eutrophication of water sources B. rising atmospheric carbon dioxide levels leading to gradual acidification C. dumping of acids in waterways D. mislabeling of samples E. None of the answer choices is correct.