Which country has the biggest ecological footprint?
a. France
b. United States
c. China
d. India
e. Canada
ANSWER: b
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RNA polymerase III of eukaryotes is responsible for transcribing ________.
A. rRNA B. tRNA C. mRNA D. All of the choices are correct.
Which of the following is NOT a hallmark of cancer?
A. Cell division in the absence of growth signals. B. Resistance to signals that slow cell division or promote death. C. Metastasis, which allows invasion of local tissues. D. Ability to stimulate growth of blood vessels to provide nutrients to the rapidly growing tumor. E. All of these choices are hallmarks of cancer.
A population ecologist wants to estimate the size of a robin population. In an apple orchard, she captures 10 robins,
marks them, and then releases them. She returns several weeks later and captures another 10 robins, of which 2 are robins she previously marked. The estimated population size of robins is ____.
a. 50 b. 15 c. 10 d. 200 e. 20
If an object were collected on Mars by the rover Curiosity, it would be considered a living organism if it ________
A) responded to environmental stimuli B) had metabolic activities and maintained homeostasis C) contained DNA and reproduced D) All of the above are true.