If a plant species cannot readily have a new gene integrated into it via a Ti plasmid, it must then be subjected to different methods
These often include removing the cell wall and inserting DNA, after treating the membrane with heat or electricity to do what to the membrane?
depolarize
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What was the significance of the Hershey-Chase experiments in which 32P and 35S were used?
a. They finally demonstrated the semiconservative nature of DNA replication. b. They demonstrated that harmless bacterial cells had become permanently transformed through a change in the bacterial hereditary system. c. They established that pure DNA extracted from disease-causing bacteria transformed harmless strains into killer strains. d. They demonstrated that radioactively labeled bacteriophages transfer their DNA but not their protein coats to their host bacteria. e. They demonstrated that DNA content of a cell does not vary over time.
Which of the following represents the treatment option most likely to avoid the evolution of drug-resistant HIV (assuming no drug interactions or side effects)?
A) using a series of NAs, one at a time, and changed about once a week B) using a single PI, but slowly increasing the dosage over the course of a week C) using high doses of NA and a PI at the same time for a period not to exceed one day D) using moderate doses of NA and two different PIs at the same time for several months
An organic molecule with the empirical formula C6H12O6
A. may have many structural formulae. B. is a carbohydrate. C. is commonly referred to as a sugar. D. All the choices are correct.
Some prokaryotes can live by utilizing entirely inorganic materials. Which of the following inorganic molecules would you predict to be the predominant building block for fats, sugars, and proteins?
(a) O2 (b) N2 (c) CO2 (d) H2