Which molecules are not part of the closed promoter complex?
A. RNA polymerase
B. Transcription factors
C. Double helix DNA
D. Single-stranded DNA
D
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You need to write down information about a molecule, but need to indicate only the type and number of atoms it contains. Which representation would work best?
A) molecular formula B) structural formula C) ball-and-stick model D) space-filling model
In a nerve cell, the function of the dendrites is to:
a. conduct impulses away from the cell body. b. attach the neuron to connective tissue. c. receive impulses and conduct them to the cell body. d. increase the speed at which nerve impulses are carried away from the cell body. e. support and nourish the neuron.
All of the following are typical components of the plasma membrane of a eukaryotic cell except
A. Glycoproteins B. Cytochromes C. Cholesterol D. Phospholipids E. Integral proteins
Halobacterium has a photosynthetic membrane that appears purple. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants
(That is, the Halobacterium action spectrum has a peak where the green plant action spectrum has a trough.) What wavelengths of light do the Halobacterium photosynthetic pigments absorb? A) red and yellow B) blue, green, and red C) green and yellow D) blue and red