The side groups of amino acids can interact with each other and with other molecules
Indicate whether the statement is true or false
TRUE
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Which of the following enzymes unwinds the DNA helix during replication in E. coli?
A. primase B. DNA Pol I C. gyrase D. helicase E. SSB
Which of the following features is characteristic of all
life? a. organization of molecules into cells b. metabolic control using enzymes c. a continuous flow of sustaining energy d. DNA with its hereditary code e. all of these
A gemma is a sexual reproductive structure produced by certain liverworts
____________________ Indicate whether the statement is true or false.
RNA in cells differs from DNA in that ___________________
(a) it contains the base uracil, which pairs with cytosine. (b) it is single-stranded and cannot form base pairs. (c) it is single-stranded and can fold up into a variety of structures. (d) the sugar ribose contains fewer oxygen atoms than does deoxyribose.