Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other? Testosterone and estradiol _____
A) are structural isomers but have the same molecular formula
B) are cis-trans isomers but have the same molecular formula
C) have different functional groups attached to the same carbon skeleton
D) are enantiomers of the same organic molecule
C
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Which of the following molecules is part of the photosynthetic electron-transport chain between photosystems I and II? Select all correct choices
A. plastocyanin B. plastoquinone C. cytochrome b6f complex
In agriculture, the use of GMOs is regulated by the ____
a. FDA b. AHA c. EPA d. USDA e. NIH
The primate-like mammals first arose about
how many million years ago? a. 95 b. 85 c. 55 d. 25 e. 15
A population of plants comes in two flower colors: blue and white. Crossing two blue-flowered plants produces mostly blue-flowering offspring and some white-flowering offspring
Crossing two white-flowered plants produces only white-flowering offspring. This indicates that the white-flowering plants are A) homozygous dominant for the flower color allele. B) homozygous recessive for the flower color allele. C) mutating. D) heterozygous for the flower color allele. E) in equilibrium.