During photosynthesis, _____________ is reduced to _____________
A. water; carbon dioxide
B. carbon dioxide; glucose
C. oxygen; water
D. glucose; oxygen
E. carbon dioxide; oxygen
B
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Although the inner leaflet of the gram-negative outer membrane is composed mainly of phospholipids, the outer leaflet of the outer membrane contains
A) pseudopeptidoglycans. B) lipoteichoic acids. C) poly-?-hydroxybutyric acids (PHB). D) lipopolysaccharides (LPS).
The final product of DNA replication is:
a. mRNA, tRNA, and rRNA molecules. b. a wide variety of proteins. c. DNA fragments. d. two DNA molecules, each of which contains one new and one old DNA strand. e. the enzymes needed for further processes, such as DNA polymerase.
As has been well-documented in recent years, certain populations and geographic regions can be much more vulnerable to environmental health issues like malaria and the use of DDT. Growing populations, with over 20-30% infected with HIV/AIDS, global climate change, and an environment that has experienced DDT applications for over 50 years, have led to increased outbreaks of malaria in the tropical regions of Africa. Which of the following nonhuman-related causes has most likely contributed the most to the increase in malaria in Africa?
A) increased insecticide resistance B) less money for mosquito abatement programs C) increased vulnerability of HIV-infected humans to malaria D) growing urban populations E) increased difficulty in treating malaria with antibiotics
Which of the following would be found as part of a plant cell but not an animal cell?
A) cytoskeleton B) gap junction C) ribosomes D) chloroplasts