The ________ model proposes that when life originated, key chemical processes generating the building blocks of life were contained in a spherical structure.
Fill in the blank(s) with the appropriate word(s).
bubble
The bubble model proposes that when life originated, key chemical processes generating the building blocks of life were contained in a spherical structure.
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A microbial ecologist who is interested in studying how gene expression is influenced by different species of bacteria in a biofilm would most likely find a metagenomic library more useful than a genomic library.
Answer the following statement true (T) or false (F)
Magnetosomes are
A. responsible for the heat resistance of endospores. B. composed of magnetic iron oxide particles. C. found in all bacteria and some archaea. D. infoldings of the cell membrane. E. also termed metachromatic granules.
In angiosperms, double fertilization produces a trinucleate cell that gives rise to a ____ endosperm and a ____
embryo.
a. haploid; triploid b. triploid; haploid c. triploid; diploid d. diploid; triploid e. diploid; haploid
Low intensity, long duration exercise results in ____
a. decreased capillary growth b. decreased number of mitochondria c. increased white fibers d. increased amounts of myoglobin e. no change in muscles