Which of the following must be present for something to be considered living?
a. Movement
b. Sentience
c. Organs
d. One or more cells
d. One or more cells
One or more cells must be present for something to be considered living.
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The photosynthetic systems of algae living in deeper water are adapted to absorb more of the light of which of the following colors?
A. yellow B. red-orange C. blue-green D. purple E. white
In Hershey and Chase’s experiment, why would it not have been suitable to use radioactive nitrogen to label DNA?
What will be an ideal response?
Megadiversity countries are those countries that
A. have the greatest number of species. B. have the largest number of endemic plant species. C. have the highest ecosystem diversity. D. spend the most money on conservation. E. contain the highest genetic diversity.
A(n) ________ is a gene or protein shared by two or more taxa as a result of ancestry, whereas a(n) ________ is a similar gene or protein resulting from a duplication event
a. homolog / ortholog b. ortholog / paralog c. paralog / homolog d. xenolog / homolog