Which of the following statements about heartwood is false?
a. It functions in conduction.
b. It is a storage site for waste products.
c. It is resistant to decay.
d. It provides structural support.
e. It is located in the center of a tree.
a
Biology & Microbiology
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Which theory of virus evolution hypothesizes that viruses evolved from genetic elements such as transposons?
a. progressive hypothesis b. regressive hypothesis c. self-replicating hypothesis d. endosymbiont hypothesis
Biology & Microbiology
Air enters human lungs from the mouth by passing through the ________.
A. posterior air sacs B. trachea C. spiracles D. esophagus E. nasal cavities
Biology & Microbiology
Linking Pattern and Process
What will be an ideal response?
Biology & Microbiology
The infoldings of the inner mitochondrial membrane are called
a. cisternae. b. cristae. c. laminae. d. lacunae.
Biology & Microbiology