Cosmids are plasmids that can be packaged into capsids of the bacteriophage lambda; therefore, they can be transmitted like phages, but they can exist and replicate in a cell like plasmids.
Answer the following statement true (T) or false (F)
True
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Transformation of yeast:
A. requires the yeast cells to be made competent using calcium chloride and heat shock. B. requires adding an enzyme to digest the cell wall, creating a spheroplast. C. occurs any time free DNA is present; yeast cells are naturally competent. D. is not stable for fragments greater than 150,000 bp; only shorter YACs are maintained. E. in yeast spheroplasts occurs naturally and takes up DNA without any additional manipulation.
Which of the following is generally more complex than the others?
A. Archaea B. Bacteria C. Prokarya D. Eukarya E. microorganisms
The swelling of a food-containing can is frequently due to the production of ________ by spoilage microbes.
A. nitrogen gas B. oxygen gas C. carbon dioxide gas D. All of the choices are correct.
In what way is mitosis similar to meiosis?
a. Both divide the nucleus in eukaryotic cells b. Both increase genetic diversity c. Homologous chromosomes pair during Prophase d. Sister chromatids form chiasmata to recombine the DNA