Tom Curtis wrote a letter in 2006 to try and encourage research into ____
a. rare plants
b. microorganisms
c. agricultural crops
d. prairie grasses
e. invasive species
ANSWER: b
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The interval before the onset of DNA
replication is called a. the G1 stage. b. the G2 stage. c. the M stage. d. the S stage. e. all of these stages
What advantage does the activity of osteoblasts and osteoclasts impart to vertebrates, even after growth has finished?
A) As old bones are dissolved, new bones can be formed. B) The cells enable bone to lengthen and shorten as needed. C) Bone growth never finishes; it continues at a slow pace throughout life. D) The cells allow bone to get stronger as physical demands are placed on it.
Four of the following are key characteristics for the survival of a species. Which one is the exception?
A. Ability to acquire energy and nutrients B. Response to environmental change C. Reproduction D. Inability to change E. Ability to grow and adapt through changes in DNA
Whales originated from a terrestrial ancestor
a. true b. false