Biology, 23.03.2020 23:59 g23liyah01
One common motif for DNA binding proteins is the Helix-Turn-Helix motif, where the first helix fits in the major groove and the second helix makes contacts along the phosphate backbone to stabilize the helix in the major groove. If a mutation changes one of the recognition amino acids in the binding helix from a glutamic acid residue to a proline residue, what effect on binding would you predict? (you should imagine the amino acids in a peptide at physiological pH)
Answers: 2
Biology, 22.06.2019 03:30
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Biology, 22.06.2019 06:00
Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time
Answers: 1
Biology, 22.06.2019 09:10
Explain the cellular functions that occur when antibiotics attack a bacteria cell. a. antibiotics target the cell wall, cell membrane, and the processes of protein and nucleic acids production in bacteria to rupture the cell. b. antibiotics create dormant resistant endospores to preserve the genetic material and rupture the cell. c. antibiotics target the cell wall and form a bridge-like connection to form conjugation. d. antibiotics use binary fission to grow twice its size, replications its dna, and split into two cells.
Answers: 2
One common motif for DNA binding proteins is the Helix-Turn-Helix motif, where the first helix fits...
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