Describe how the laws of thermodynamics would impact the Earth were the sun’s light suddenly
blocked? What will be an ideal response?
According to the first law of thermodynamics, the absence of incoming energy would limit life on
Earth to the energy already available. Photosynthesizers would die rapidly, while consumers would
last longer. However, the second law of thermodynamics tells us that energy would be lost with each
transformation (one organism eating another), so eventually there would be insufficient amounts of
energy on Earth to support life
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If an operon is regulated by ____ control, genes are ____ by a regulatory protein called a ____
a. positive; on unless they are switched off; repressor b. negative; off unless they are switched on; repressor c. negative; on unless they are switched off; repressor d. positive; off unless they are switched on; repressor e. positive; on unless they are switched off; activator
In 1975, scientists convened in Asilomar, California and
A) determined that restriction enzymes could cut DNA. B) created the first transgenic animals. C) reviewed the use of drugs produced by recombinant DNA technology. D) drew up guidelines to regulate recombinant DNA technology.
Which protein binds and releases oxygen molecules?
a. collagen b. insulin c. keratin d. hemoglobin e. enzymes
As sunlight passes through water, only ________ wavelengths are able to penetrate into deeper water
Fill in the blank(s) with correct word