Watson and Crick describe the relationship between ________ as a directional flow of information called the "central dogma".
A) nucleic acids and proteins
B) enzymes and proteins
C) peptides and polypeptides
D) DNA and RNA
A) nucleic acids and proteins
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The gram-negative coccus that can be described as oxidase-positive, glucose-negative, maltose-negative, sucrose-negative, lactose-negative, and DNase-positive is:
a. N. meningitidis. b. M. catarrhalis. c. Neisseria cinerea. d. N. gonorrhoeae.
The proteins of bacteria that are involved in the movement of small molecules into the cell are called
A. transport proteins. B. permeases. C. carriers. D. peptidases. E. transport proteins, permeases, AND carriers.
Which of the following observations supports the endosymbiotic theory for mitochondria? a. Mitochondria divide independently of nuclear division
b. All of the choices. c. Mitochondria have their own DNA. d. Membranes within mitochondria resemble plasma membranes of bacteria.
In plant cells, auxin binds to a
a. cell surface receptor and triggers the ras/raf pathway. b. nuclear receptor that changes its shape so that it can bind to and activate genes. c. receptor ubiquitin ligase that stimulates the degradation of transcriptional repressors, resulting in activation of genes. d. cell surface molecule that stimulates fluid uptake.