What problem does this result in?
What will be an ideal response?
ampR is the gene conferring resistance to the antibiotic ampicillin. Ampicillin is used to select for bacterial colonies that have been successfully cloned. Without ampR, both successfully cloned and unsuccessfully cloned bacterial colonies will fail to grow if the selection medium contains ampicillin.
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The taxonomy of the methanogens is based on
A) phenotypic analysis. B) phylogenetic (comparative nucleic acid sequencing) analysis. C) phenotypic and phylogenetic analyses. D) neither phenotypic nor phylogenetic analysis.
Sumatra is home to one species of orangutan, a species of critically endangered elephant, and the Sumatran tiger, but half of Sumatra’s forest is now gone. The neighboring island of Borneo, home to the other species of orangutan, has lost a similar area of forest. Forest loss continues in protected areas of Borneo. All three species of orangutan are now listed as endangered by the International Union for Conservation of Nature (IUCN), but they are simply the most visible of thousands of species that will not survive the disappearance of the forests in Sumatra and Borneo. This is an example of which type of threat to biodiversity?
a. introduction of exotic species b. global climate change c. habitat loss d. overharvesting
The accessory organs for the mammalian digestive system include all of the following except the:
1.salivary glands 2.adrenal medulla 3.liver 4.gallbladder
Intake of saturated fats stimulates cholesterol synthesis in the liver and may therefore result in an increase in blood cholesterol levels.
a. true b. false