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BS 161 MSU Exam 2 questions with verified answers.

BS 161 Exam 1 questions with verified answers

*Because the G-protein can shut itself off, the whole system can be shut down quickly when the extracellular signal molecule is no longer present.* Ans *If you inhibit the GTPase function of the G-protein, it can no longer be shut off, the G- protein is permanently activated!!* 1. Reception Ans In *reception*, a chemical signal binds to a cellular protein, typically at the target cell's surface or inside the cell. *Signal binding to the receptor effects a structural change that activates t...

BS 161 Class 13 questions with verified answers.

BS 161 Exam 2 Questions with verified answers

_____ are the subunits of nucleic acids, and _____ are the subunits of proteins. a. Nucleotides; amino acids b. Nucleotides; amino acids c. Nucleoli; amino acids d. Amino acids; nucleic bases e. Polypeptides; sugars Ans a. Nucleotides; amino acids 1. Based on the primer on scale and approximation, the length of a ribosome is approximately ____ orders of magnitude smaller than the length of a eukaryotic cell and approximately ____ orders of magnitude larger than the length of an amino a...

BS 161 exam 1 practice questions with verified answers

BS 161 MSU questions with verified answers

a cell does not fully replicate its DNA but proceeds through M phase: Ans at least one daughter cell will have <5 pg of DNA A cell does not respond to the ligand because: Ans it does not have a receptor to bind to the ligand, so the signal transduction is not activated and there is no cellular response a cell is treated with a drug that prevents cytokinesis from occurring: Ans the cell will have 10 pg DNA (and two nuclei) AFTER the serine is phosphorylated, the serine can form blank ...