If a mixture of bacteriophages, some labeled
with radioactive sulfur and others labeled with
radioactive phosphorus, is placed in a bacterial
culture, the bacteria will eventually contain
a. radioactive sulfur.
b. radioactive phosphorus.
c. both radioactive sulfur and phosphorus.
d. neither radioactive sulfur nor radioactive
phosphorus.
e. complete viruses with radioactive sulfur
coats.
B
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Which of the following is/are a benefit of genetic testing? Select all correct choices
A. Newborns can be screened for treatable diseases. B. Individuals can find out whether or not they carry harmful recessive alleles. C. Adults can find out whether or not they have specific risk factors for some diseases. D. Physicians can use the results of genetic testing to engineer drugs specific for an individual's genotype. E. None of these.
Which of the following are examples of systemic infections, or those that spread to several sites and tissues, usually in the bloodstream?
a. AIDS b. A wart c. An infected cut d. A boil e. Typhoid fever
The distribution of cytoplasm to daughter cells is accomplished during
A) mitosis B) meiosis C) cytokinesis D) karyokinesis
In the three domain system of classification,
A. eukaryotes are more similar to the prokaryotes now classified into domain Bacteria than to those now classified into domain Archaea. B. animals and plants are less similar to each other than to the prokaryotes now classified into domain Archaea. C. prokaryotes are classified into two domains, with the organisms in domain Archaea more similar to eukaryotes than to the prokaryotes in the domain Bacteria. D. cladistics alone were used to formulate the new phylogenetic tree of life. E. by the principle of parsimony, it required fewer assumptions to divide the prokaryotes into two domains than it did to put them into a single domain.