How does taxonomy assist biologists?
A) by providing easily remembered scientific names for organisms
B) by categorizing diverse items into smaller and smaller numbers of groups
C) by reducing life to its smallest common denominator, the cell
D) all of the above
B
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The floating leaf disk assay measures oxygen production as an indication of photosynthetic activity. What other substances could be measured as alternate ways of measuring photosynthesis?
What will be an ideal response?
A red blood cell ____
a. does not possess a nucleus b. is made in the plasma c. can divide in the plasma d. has the ability to repair itself e. lives up to 120 months
The first living cells emerged approximately how many years ago?
a. 100 million b. 500 million c. 1 billion d. 2 billion e. 4 billion
Simple diffusion across a plasma membrane is called passive transport because it ________.
a. requires transport proteins b. requires energy from the cell c. does not require energy from the cell d. does not require control by the nucleus