A thylakoid that is placed in a basic solution will synthesize ATP. How is this possible?
A. The carbon reactions are blocked in the thylakoid at high pH.
B. ATP is formed spontaneously at low pH.
C. ATP cannot be broken down at low pH.
D. A proton gradient is created by the difference in pH.
E. An electron gradient is created by the difference in pH.
D. A proton gradient is created by the difference in pH.
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The lacP site within the lac operon is upstream of the genes that encode for lactose uptake and metabolism proteins. The lacP site is
A. the lac promoter site. B. where RNA polymerase binds. C. the site where genes are transcribed that encode proteins for metabolizing lactose. D. the lac promoter site where RNA polymerase binds. E. the lac promoter site, where genes are transcribed that encode proteins for metabolizing lactose.
Which is the correct summary equation of aerobic respiration?
a. C6H12O6 +H2O2 = CO2 + H2O b. C6H12O6 + O2 = CO2 + H2O + NH3 c. C6H12O6 + O2 = CO- + H2O d. H2O + NH3+ C6H12O6 = O2 + CO2 e. C6H12O6 + O2 = CO2 + H2O
Because it is an enclosed compartment of fluid under pressure, the coelom can serve as a
_____, which shapes the body of soft animals. a. food vessel b. pressure balloon c. hydrostatic skeleton d. cartilaginous skeleton e. storage compartment
Imagine a situation much like the example of guppies in Trinidad and Tobago described in your text. In this situation, populations of guppies who once shared an evolutionary history have been separated by the for-mation of barrier waterfalls
If you are an evolutionary biologist studying reproductive trade-offs, make a prediction about the reproduc-tive strategies you might find in female guppies found on each side of this barrier when the upstream side population faces lower predation than the downstream side. In this situation, the predators on the down-stream side are also larger and can eat any guppy offspring, no matter the size. Describe your predictions about how females on each side of this barrier might reproduce and explain the trade-offs faced by reproduc-ing females. What will be an ideal response?