A slime layer gives bacterial cells greater pathogenicity than a capsule.
Answer the following statement true (T) or false (F)
False
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True or False: the first cells were surrounded by a membrane composed largely of lipids synthesized by intracellular proteins
A. true B. false
Which of the following is not true of the formation of a eukaryotic translation initiation complex?
A. eIF4F binds to the 5' cap of the mRNA. B. eIF2 binds to the A site to block the binding of the initiating tRNA. C. At least two GTP molecules are hydrolyzed per initiation event. D. eIF1, eIF1A, eIF2, and eIF3 are displaced before the 60S subunit joins the 40S subunit.
In cnidarians, what is found between the epidermis and the gastrodermis?
a. ectoderm b. mesoglea c. endoderm d. various organelles e. mesoderm
The main form(s) of nitrogen taken up by plant roots and useful to plants is/are
A. N-N. B. nitrite and nitrate. C. nitrate and ammonia. D. nitrite. E. ammonia and N-N.