Species richness is a measure of both the number of species and the relative importance of each
species based on its abundance, productivity, or size.
____________________ Indicate whether the statement is true or false.
F, diversity
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The origins of which of the following cell types creates the least amount of ethical debate?
A. EG cells B. EC cells C. Hematopoietic stem cells D. ES cells
During which substage of mitosis do sister chromatids break apart and start moving to opposite poles of the cell?
A. Metaphase B. Prophase C. Telophase D. Anaphase
How are the reproductive cycles of retroviruses and retrotransposons different?
a. Retrotransposons can integrate into a host chromosome. b. The retroviral genome must be reverse transcribed to DNA. c. Only retrotransposons can be passed to daughter cells following cell division. d. Retroviruses have an extracellular phase. e. Only retroviral genes are transcribed.
Which of the following may be found in blood plasma?
A) water and proteins B) water, proteins, nutrients, and ions C) water, proteins, and ions D) water