The significance of one new and one parental strand in each new DNA molecule would be that:
1.New strands are more susceptible to mutation.
2.DNA polymerase will only work on a parental strand.
3.Having an original strand is needed to prevent errors during the replication process.
4.Strands can only pair with existing strands.
3
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The electron transport chain begins to function when __________ or __________ are oxidized. Fill in the blank(s) with the appropriate word(s)
As blood glucose levels fall below normal, ____
a. insulin secretion stops b. glucagon secretion increases c. the beta cells of the pancreas are stimulated d. glucose is converted to glycogen in the liver e. somatostatin levels rise
A(n) _______ can be defined as a disease affecting a large number of individuals in a short period of time on a global scale.
a) emerging infectious disease b) antibiotic-resistant infection c) pandemic d) epidemic
Which of the following statements about Hfr cells and bacterial conjugation is false?
A. An Hfr cell becomes an F- cell if its integrated F plasmid is excised. B. Cells with integrated F' plasmid have two copies of some genes. C. The genes that are transferred from an Hfr cell into a recipient cell during conjugation replace the equivalent genes in the recipient cell. D. An F' plasmid contains some bacterial genes. E. If excision of the F plasmid from an Hfr cell includes some bacterial genes, a partial diploid can result.