In the process of carbon fixation, RuBP attaches a CO2 to produce a six-carbon molecule, which is then split to produce two molecules of 3-phosphoglycerate
After phosphorylation and reduction produces glyceraldehyde 3-phosphate (G3P), what more needs to happen to complete the Calvin cycle? A) addition of a pair of electrons from NADPH
B) regeneration of ATP from ADP
C) regeneration of RuBP
D) regeneration of NADP+
C
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In general, which group is MOST resistant to radiation?
A) microscopic fungi B) viruses C) thermotolerant bacteria D) spore-forming bacteria
In the alveoli
A. oxygen diffuses into the blood while carbon dioxide diffuses out of the blood. B. oxygen diffuses out of the blood while carbon dioxide diffuses into the blood. C. both oxygen and carbon dioxide diffuse out of the blood. D. both oxygen and carbon dioxide diffuse into the blood. E. no exchange with the blood occurs.
Which of the following is an example of an allogenic change that drives succession?
A) seasonal changes in temperature, photoperiod, and light intensity B) increased shading of seedlings by adult trees in a forest C) increased nitrogen availability in soil due to the presence of leguminous plants D) reduced salinity due to surface shading by grasses in a salt marsh
Being born with extra fingers on a hand is called polydactyly. This is more common in some populations in North America than others due to ________.
A. random mating with other populations in North America B. natural selection in favor of extra fingers in these populations C. a founder effect because their ancestors from Europe carried the alleles D. migration of people with multiple fingers out of the population E. an increase in mutation rate in these populations