Which of the following events does not put you at risk for contracting a Francisella tularensis infection?
A) adopting a dog from an animal shelter
B) a tick bite while out camping
C) taking away a wounded rabbit your cat brought back for you
D) cleaning a deer that you just shot
E) removing an injured squirrel from the road in front of your house
Answer: A
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Which of the following processes do not require plants to spend energy? Choose all that
A. water transport through xylem B. carbohydrate transport through phloem C. C3 photosynthesis D. C4 photosynthesis E. nutrient transport across endoderm cells
Homeotic genes
A. are unique to fruit flies. B. encode transcription factors. C. encode transcription factors that regulate developmental genes. D. regulate developmental genes. E. are unique to fruit flies and encode transcription factors that regulate developmental genes.
Which of the following statements is correct about passive diffusion?
A) It requires an expenditure of energy by the cell. B) It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient). C) It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient). D) It may require a transport protein. E) It involves movement of molecules down a concentration gradient and may require a transport protein.
Which of the following is true?
A) A neutral allele leads to a change in function in a protein that neither harms nor helps an organism. B) A neutral mutation leads to a phenotype that can help or hurt the organism depending on the environment. C) A neutral mutation leads to no discernable phenotype. D) A mutation in the DNA can be observed at the macroscopic level even if there's no change in phenotype. E) Each biochemical pathway is governed by one gene.