Fatty acids esterified to glycerol in the lipid bilayer having one or more unsaturated sites is less flexible than one with where all sltes are saturated.
a. true
b. false
Ans: a. true
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Prezygotic reproductive isolation affects the ability of gametes to combine between species. Of the following, which is not an example of prezygotic reproduction isolation?
A. behavioral isolation B. habitat isolation C. temporal isolation D. hybrid infertility isolation E. mechanical isolation
One hallmark of speciation is ____
a. lack of change in reproductive behaviors b. a decrease in balanced polymorphisms c. an increase in fixed alleles d. decreased genetic diversity of populations
e. end of gene flow between populationsEndangered species
A. are mainly found in the tropics. B. are likely to be in danger of extinction in the future. C. will become extinct in the next 50 years. D. are in danger of extinction throughout all or most of their range. E. are those species found only in zoos, aquaria, and museums.
The electron transport chain _____
A) is a series of redox reactions B) is a series of substitution reactions C) is driven by ATP consumption D) takes place in the cytoplasm of prokaryotic cells