Which of the following is TRUE of xylem?
a. It conducts water downward in the plant.
b. It transports food upward in the plant.
c. It transports minerals and water throughout
the plant.
d. It transports material from stem to leaf.
e. It supports the plant stem.
C
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Colonies growing on modified cefsulodin-irgasan-novobiocin (CIN) agar appear to be either Aeromonas spp. or Yersinia enterocolitica. Which test should be performed to differentiate be-tween these two organisms?
a. String test b. Sucrose fermentation c. Glucose fermentation d. Oxidase
How are the cells of a multicellular animal connected to the external environment? Briefly describe how nutrients and wastes are transferred from these cells to the external environment.
What will be an ideal response?
Genome-wide association scans compare the proteins of individuals with a particular disease to
individuals without the disease. _________________ Indicate whether the statement is true or false.
Gene expression is a term that relates to
A) DNA replication. B) the unique set of genes in an individual. C) the karyotype of a chromosome set. D) how genes are passed from parent to offspring. E) the flow of genetic information from DNA to proteins.