Bio 151 final exam Study guides, Class notes & Summaries

Describe the structure of DNA - correct answer-DNA is a double helix -Sugar-phosphate backbone -Phosphate groups are negatively charged -overall charge of DNA molecule is negative -Hydrophobic nitrogenous bases face the inside, away from water -Twist every ten bases -The two strands run antiparallel Explain the base-pairing rules including hydrogen bonding. - correct answer-A pairs with T with 2 hydrogen bonds -G pairs with C with 3 hydrogen bonds A&G: purines. 1 purine with 1 pyr...

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Bio 151 Final Exam Review Questions with Correct Answers What does a kinase do? - Answer-Adds a phosphate to another protein In the absence of cyclin, CDK - Answer-Does not bind target proteins or phosphorylate anything What happens to G1/S cyclin before S phase - Answer-It's ubiquitinated How might a ubiquitin inhibitor affect the cell cycle? - Answer-Proteins inappropriate for the given phase might continue to be phosphorylated What does cdk do directly during S phase? - Answer...

What type of bond links amino acids into a protein chain - correct answerpeptide bond What are the three components of a nucleotide? - correct answerSugar, phosphate group, nitrogenous base What will determine whether a particular chain of amino acids is hydrophobic or hydrophilic? - correct answerThe R-groups in that part of the peptide If a hydrophilic signal like insulin is intended to pass its signal to the nucleus inside a cell it will pass through the membrane to get to the DNA - ...

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