Membrane-like structures form when proteins or lipids are mixed with water. They serve as a model for __________, which may have preceded cells.
Fill in the blank(s) with the appropriate word(s).
protocells
Biology & Microbiology
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A riboswitch mechanism is known to regulate the transcription of genes involved in:
A. lactose metabolism. B. vitamin B1 synthesis. C. tryptophan biosynthesis. D. arabinose metabolism.
Biology & Microbiology
A species that contains two copies of each chromosome is called _______
A. a genetic mutation B. a morph C. haploid D. diploid E. alleles
Biology & Microbiology
How is the aging process linked to telomeres?
Biology & Microbiology
An organism cultured from a single cell of another organism that is genetically identical to the other organism is called:
a) a dedifferentiated organism. b) a stem cell. c) a clone. d) the F1 generation. e) an embryo.
Biology & Microbiology