When seeds are removed from strawberries, fruit growth is stopped. This suggests the seeds contain which of the following hormones?
A. Auxin
B. Oligosaccharides
C. Gibberellins
D. Strigolactones
E. Ethylene
Answer: A
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The division of microbes termed the Firmicutes have a cell wall type best described as ________.
A. gram-negative B. gram-positive C. archaeal D. lacking a cell wall
Portion of Figure 21.11
?
Refer to the accompanying figure for questions 26-28.
The organism shown in the accompanying figure belongs to the ____ group.
A. kinetoplastids B. diplomonads C. green algae D. red algae E. brown algae
DNA is constructed of
A) a single strand of nucleotides with internal hydrogen bonding. B) two complementary strands of nucleotides bonded A—C and G—T. C) two strands of nucleotides running in an antiparallel configuration. D) two strands of identical nucleotides in a parallel configuration with hydrogen bonds between them. E) None of the answers is correct.
Adhesins
A) allow pathogens to stick to host tissues only in a nonspecific manner. B) are limited to only a few known types. C) include molecules that are typically found deep inside the pathogenic cell. D) include molecules that bind to host factors such as fibronectin, sialic acid, and heparin / heparin sulfate. E) make poor targets for vaccine development.