Transgenic organisms contain extra copies of their own genes
a. True
b. False
ANSWER: False
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What is the function of surfactant in the mammalian respiratory system?
A. reduction of surface tension in the fluid covering the alveoli B. capture and removal of inhaled foreign particles C. maintaining a moist surface D. transport of oxygen E. It functions as an antibiotic.
Answer the following statements true (T) or false (F)
1. Strains of Staphylococcus aureus known as MRSA are resistant to methicillin, but are susceptible to most other antibacterial agents. 2. Bacteria can develop resistance to a particular antimicrobial agent as a result of a chromosomal mutation or the acquisition of a new gene. 3. A bacterial cell that receives an R-factor becomes multidrug resistant. 4. A “superinfection” is an infection that cannot be cured. 5. Using two different antimicrobial agents to treat a patient's infection is referred to as antagonism if the result that is achieved is much better than that which could have been achieved using only one of the drugs.
During which stage of the ovarian cycle will LH spike?
A. Secretory phase B. Proliferative phase C. Luteal phase D. Ovulation E. Follicular phase
DNA microarrays have made a huge impact on genomic studies because they _____
A) can be used to eliminate the function of any gene in the genome B) can be used to introduce entire genomes into bacterial cells C) allow the expression of many or even all of the genes in the genome to be compared at once D) allow physical maps of the genome to be assembled in a very short time