Transporters, in contrast to channels, work by ________________
(a) specific binding to solutes.
(b) a gating mechanism.
(c) filtering solutes by charge.
(d) filtering solutes by size.
(a)
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Answer the following statements true (T) or false (F)
1. Mendel's laws do not adequately explain all the patterns of inheritance. 2. The DNA methylation state of a zygote will be maintained throughout the life of the organism and then passed on unchanged to its offspring. 3. Epistatic gene interactions do not follow Mendel's laws of inheritance. 4. Paternal inheritance occurs in plants but not animals because animals do not have chloroplasts. 5. Barr bodies are a diagnostic feature of X inactivation.
The chemical difference between dideoxyribonucleotides used in Sanger sequencing and the deoxyribonucleotides
normally found in DNA is the presence of a(n) _____ in the deoxyribose sugar of dideoxyribonucleotides.
a. 3' – H rather than – OH b. 5' – H rather than – OH c. 5' – OH rather than – H d. 5' – H rather than – OH e. 3' – COOH rather than – OH
Noting that half of a population is between the ages of 7 and 10 illustrates which of the following?
a. an r-selection graph b. a k-selection graph c. an age structure d. a growth curve
The tendency of water molecules to form hydrogen bonds is
A. evaporation. B. hydrolysis. C. cohesion. D. condensation. E. adhesion.