The term peptidyl transferase relates to ________
A) elongation factors binding to the large ribosomal subunit
B) discontinuous strand replication
C) 5? capping of mRNA
D) peptide bond formation during protein synthesis
E) base additions during mRNA synthesis
Answer: D
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You expose a tube of bacteria to ultraviolet radiation to induce mutations. You then spread the bacteria on a plate containing media with all known required nutrients and wait until separate colonies form. Finally, you use replicate plating to transfer a print of this plate to an additional sterile plate containing minimal media plus a known required nutrient for the bacteria. Based on this protocol, colonies growing on the plate with minimal media would include what type of cells?
A. only wild-type bacteria B. only mutant bacteria C. mutants that only require the supplied nutrient D. Both wild-type and all mutants E. wild-type bacteria and the mutants that only require the supplied nutrient Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about growth media? How does it relate to the question? · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Cells undergo exocytosis ____
a. to pump protons down a concentration gradient b. when replicating c. to secrete protein and wastes from the cell d. to ingest nutrients e. as a means of cellular protection
Which of the following species is both a keystone species and a flagship species?
A. grizzly bear B. alligator C. dolphin D. beaver E. panda
The transfer of specific molecules through cell membranes is an important factor in the process of
a. cytoplasmic flow b. mitotic division c. homeostatsis d. nuclear transfer