In the Citrate Agar, the agar turns blue when
A. The pH is increased
B. The pH is decreased
C. The pH did not change
D. The pH is irrelevant
Ans: A. The pH is increased
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The Archaea are
A) primarily ancient organisms that have not evolved very much in the last billion years. B) phylogenetically diverse, but functionally restricted to extremophiles and chemolithotrophs. C) diverse microorganisms that inhabit almost every environment on Earth, including the colon of humans and other mammals. D) functionally diverse, but restricted to thermophilic or hyperthermophilic environments.
Explain the relationship between cellular respiration and photosynthesis with respect to the storage and release of chemical energy
What will be an ideal response?
A polysome is ____
a. one of the units of a ribosome b. the nuclear organelle that synthesizes RNA c. an organelle that functions similarly to a ribosome during meiosis d. the two units of a ribosome considered together e. an mRNA molecule with several ribosomes attached
Scientists have developed bioengineered crops that are more resistant to damage by frost, chemicals, and drought. Crops have been bioengineered also to produce larger crop yields. What is a potential drawback to increased use of bioengineered crops?
A) a loss of genetic variation B) increased disease resistance C) lower food costs D) decreased food supply