Which color of light has the least important role in photosynthesis?
a. red
b. green
c. blue
d. orange
e. yellow
B; Chlorophyll is green and therefore reflects green light. Only light that is absorbed can be used in photosynthesis.
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The ascomycetes are named for their characteristic reproductive structure called a(n) ________.
A. ascocarp B. hypha C. thallus D. ascus
Which of the following provides some evidence that RNA probably evolved before DNA?
A. DNA polymerase has proofreading function. B. RNA polymerase makes a single-stranded molecule. C. RNA polymerase uses DNA as a template. D. RNA polymerase does not require localized unwinding of the DNA. E. DNA polymerase uses primer, usually made of RNA.
How does the C. elegans gene lin4 control the expression of lin14?
What will be an ideal response?
The (bacilli/Lactobacilli/bacteroids) are a group of Gram-negative bacteria that include obligate anaerobes normally found in the intestinal tracts of animals and humans.
Fill in the blank(s) with the appropriate word(s).