During the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate and phosphoenolpyruvate, a phosphate group is added to ATP to generate ATP. The mechanism for ATP production in this reaction is
A) substrate-level phosphorylation.
B) product-level phosphorylation.
C) oxidative phosphorylation.
D) anabolic phosphorylation.
E) aerobic phosphorylation.
Answer: A
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Which of the following statements about transcriptional regulation is incorrect?
A. Regulatory transcription factors are proteins that bind to enhancer DNA sequences and then recruit one or more general transcription factors. B. A typical gene contains only one enhancer sequence. C. General transcription factors are required to initiate the process of transcription. D. General transcription factors bind to the TATA box in the promoter region of a gene. E. RNA polymerase components are recruited to the promoter region by the general transcription factors bound to the TATA box.
Signaling by the steroid hormone estrogen is an example of _______ signaling.
a. autocrine b. endocrine c. paracrine d. direct cell-to-cell
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.
Which of the following statements is incorrect in the context of fossilization?
A. Impressions form detailed imprints of only external structures. B. Extreme pressure transforms the mineralized remains into rock. C. Sediments that slowly accumulate on top of the site exert increasing pressure. D. Minerals dissolved in the water gradually replace minerals in bones. E. Mineral particles settle out of the groundwater and crystallize inside cavities.