Provide evidence to both support and refute the current existence of life on Mars? What will be an ideal response?
Geological formations suggest that long ago there was flowing water on Mars, and recent evidence has
found ice on Mars today. However, the absence of liquid water and the absence of an ozone layer to
block UV radiation would make life on Mars very challenging today. If there is life, it is thought it
must exist underground to be shielded from the damaging UV rays.
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When you breathe quietly, inhalation is _____ and exhalation is _____
a. passive; passive c. passive; active b. active; active d. active; passive
Hybridization between populations upon secondary contact may result in ________
A) reinforcement of the two original species by way of pre- or post-zygotic isolating mechanisms B) the creation of one or more new species as hybrids between the two parental species C) the creation of a hybrid lineage that has higher fitness than either of the parental species D) All of the above are possible. E) None of the above are possible.
Under which conditions would your run a t-test?
A. When the independent variable is continuous and the dependent variable is discrete B. On variables that are only discrete C. On variables that are only continuous D. When the independent variable is discrete and the dependent is continuous
Which of the following mechanisms normally repairs pyrimidine dimers?
A) base-excision repair B) light repair C) single-strand repair D) error-prone repair E) SOS response repair