Energy can be _______ but not __________. Chemicals ________ the biosphere but energy __________ the biosphere.
A) converted, destroyed, flow through, is recycled in
B) converted, destroyed, are recycled in, flows through
C) destroyed, converted, flow through, is recycled in
D) destroyed, converted, are recycled in, flows through
Ans: B) converted, destroyed, are recycled in, flows through
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Control of the lac operon and lactose utilization in bacteria is
_____ not induced in the presence of both glucose and lactose. _____ only induced when there is glucose but not lactose. _____ is a negative control, mediated by a repressor. _____ controlled by the expression of three downstream genes. _____ preferentially utilizing lactose as a carbon source.
Vertebrate lungs originally evolved from ____
a. fish gills b. fish guts c. lizard gills d. lizard guts e. salamander gills
Major end products from photosynthesis include oxygen gas and simple, high-energy carbohydrates
Indicate whether the statement is true or false
Alcohol is a waste product produced by yeast in the presence of sugar and the absence of ________
A) CO2 B) H2O C) O2 D) ATP