What happens during photorespiration?
A) The Calvin cycle produces twice as much glyceraldehyde 3-phosphate (G3P).
B) The enzyme rubisco uses oxygen as its substrate for the reaction with ribulose bisphosphate.
C) Ribulose bisphosphate (RuBP) is broken down into glycolate.
D) A second wave of light reactions occurs to replace the Calvin cycle.
B
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A self-limiting illness and the most common clinical syndrome associated with leptospirae that includes fever, headache, myalgia, and aseptic meningitis in the immune stage is called:
a. icteric leptospirosis. b. anicteric leptospirosis. c. Weil's disease. d. syphilis.
For changes that occur in response to environmental conditions, changes in gene expression are most likely due to
____, while changes in DNA sequence are more likely due to ____.
a. evolutionary adaptation; acclimatization b. evolutionary adaptation; acclimation c. evolutionary adaptation; biorhythms d. acclimatization; evolutionary adaptation e. acclimation; evolutionary adaptation
Which of the following represents the correct sequence of events for translation in eukaryotes?
a. eIF-2 binds to GTP, the ribosome scans mRNA for AUG, GTP is hydrolyzed b. the ribosome scans mRNA for AUG, eIF-2 binds to GTP, GTP is hydrolyzed c. GTP is hydrolyzed, eIF-2 binds to GTP, the ribosome scans mRNA for AUG d. eIF-2 binds to GTP, GTP is hydrolyzed, the ribosome scans mRNA for AUG
The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by a recessive mutant gene that independently assorts with a recessive gene for hairy (h) body
Assume that a cross is made between a fly with normal wings and a hairy body and a fly with vestigial wings and normal body hair. The wild-type F1 flies were crossed among each other to produce 1024 offspring. Which phenotypes would you expect among the 1024 offspring, and how many of each phenotype would you expect?