f you consider the combined processes of photosynthesis and cellular respiration, the electrons found in H2O at the beginning of the light reactions end up attaching to ________ during respiration.
-O2 to make new H2O
-NADPH to make new glucose
-pyruvate to make ethanol
-electron transport carriers to make O2
-none of the above
-O2 to make new H2O
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Which of the following contribute(s) to the differences between the members of the Domain Archaea and the Domain Bacteria?
A. Archaea have isopranyl glycerol ethers rather than fatty acid esters in their membrane lipids. B. Archaea lack muramic acid. C. Archaea differ from bacteria in their tRNA composition, ribosome structure, and antibiotic sensitivity. D. All of the choices are correct.
Which of the choices best describes macroevolution?
A) Individuals with one genotype reproduce more than individuals with another genotype in a population. B) Mutation creates new alleles that are dominant. C) A new species emerges. D) Dominant and recessive allele frequencies are in equilibrium in a population.
The simplest living animal is the ________
a. cnidarian b. placozoan c. sponge d. flatworm
Which one of the following taxa (subgroups used in classification) applies to humans?
A) Mammals B) Protista C) Invertebrates D) Prokarya E) Bacteria