Overexploitation of many species has increased due to the growing demand for wild animals and plants, and
A) the dramatic increase in world population.
B) global warming.
C) technological advances that have made it easier to obtain the animals and plants.
D) an increase in the number of core reserves.
E) sustainable agriculture, which has become more popular.
C
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The rising of bread dough is the result of
A) biotin production. B) carbon dioxide produced by fermentation. C) oxidative phosphorylation. D) oxygen being released.
Which of the following is not an accurate description of events leading to the lysogenic pathway following viral infection in a bacterium?
A. Upon infection, the linear bacteriophage DNA forms a circle and transcription is initiated at promoters PL and PR. The transcripts from PR encode the proteins cro and cII. B. Reduction in the concentration of cI protein is the most important contributor to lysogeny. C. Reduced protease activity due to poor conditions allows cII to accumulate, which then stimulates transcription from PE and thus expression of cI. D. cI protein binds to operator OR , preventing cro and cII expression. E. cI protein stimulates transcription from promoter PM, leading to even more cI production. The increased cI binds to operator OL and inhibits PL.
During which stages of cellular respiration is CO2 released?
a. glycolysis b. pyruvate oxidation c. citric acid cycle d. electron transport system e. both pyruvate oxidation and citric acid cycle
A reddish chemical, lipofuscin, is found in greater quantities in cells of older people than in those from younger people. This chemical should be broken down in the cells. Which specific type of organelle is not working as well in the seniors?
A) lysosome B) mitochondrion C) nucleus D) rough endoplasmic reticulum