Bio 181 exam 4 - Study guides, Class notes & Summaries

Bio 181 ASU Exam 3 Questions and Answers 100% Pass 4 types of glial cells schwann, oligodendrocytes, astrocytess and microglia In the motor end plate, the event that is the immediate trigger for exocytosis is calcium ions T or F: Acetylcholine exocytosed from the presynaptic cell travels to the postsynaptic cell to start the action potential in the postsynaptic cell. true T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid false T or F: Blood pressure drives...

BIO 181 Exam# 1 (Chapters 1, 2, 3, 4 and Labs 1, 2, 3)Describe the six characteristics of all living organisms. - correct answer Cellular Organization: made up of cells Ordered Complexity: very complex Sensitivity: responds to environment Growth, Development, and Reproduction: Energy Utilization: make energy and convert to usable Homeostasis: maintain internal factors at a steady rate Evolutionary Adaption: changes based on environment Define hypothesis. Describe two traits that a good...

BIO 181 Exam 1Advantages of being multicellular - correct answer 1. labor distribution 2. longer lifespans Endosymbiotic Theory - correct answer theory that eukaryotic cells formed from a symbiosis among several different prokaryotic organisms Disadvantages of being multicellular - correct answer 1. need more food 2. if one organ fails the who organism can fail lack of biomolecular machines - correct answer limits a cell from becoming more complex Single-celled eukaryote organism - c...

BIO 181 Exam 2What are the 3 phases of the cellular respiration process? - correct answer glycolysis, the citric acid cycle, and the electron transport chain Where in the cell does the glycolysis part of cellular respiration occur? - correct answer the cytosol What is the glycolysis part of cellular respiration's purpose? - correct answer A molecule of glucose is split to release energy Where in the cell does the Krebs (Citric Acid) cycle part of cellular respiration occur? - correct a...

Bio 181 Exam #4Suppose you are provided with an actively dividing culture of E. Coli bacteria to which radioactive thymine has been added. What would happen if a cell replicates once in the presence of this radioactive base? A. One of the daughter cells, but not the other, would have radioactive DNA B. Neither of the two daughter cells would be radioactive C. All four bases of the DNA would be radioactive D. Radioactive Thymine would pair with nonradioactive guanine E. DNA in both daughter ...

Bio 181 Exam 1 study guideHow "hypothesis based science" differs from 'discovery science" - correct answer -discovery science is making observations or document observations, making a conclusion, seeks science for natural causes. -Hypothesis-based is formal, using scientific method. List the criteria of a good hypothesis. - correct answer 1.First to find out the change of what you are testing 2.The hypothesis must be testable 3.It should be Falsifiable: there must be a possible negativ...

BIO 181 ASU Exam 3 Questions And Revised Correct Answers List the 4 types of glial cells and list a phrase to describe their function. - ANSWER : 1. Schwann cells wrap around the axon of a cell in the PNS, while providing electrical insulation. 2. Oligodendrocytes do the same thing as Schwann cells but they do it in the CNS. 3. Astrocytes protect the brain from toxic chemicals. 4. Microgilia protect the brain. T/F When the presynaptic cells contacts a muscle cell, the synapse are...

BIO 181 FINAL EXAM PRACTICE QUESTIONS WITH CORRECT ANSWERS 1. A small cell has a ______________, which makes the cell_________________? a. Large SA/V ratio; Inefficient b. Small SA/V ratio; Inefficient c. Large SA/V ratio; Efficient d. Small SA/V ratio; Efficient CORRECT ANSWER c. Large SA/V ratio; Efficient 2. Which of the following is not a component of the Prokaryotic cell? a. Nucleus b. Ribosomes c. Nucleoid d. Flagella e. Two of the above f. None of the above CORRECT ANSWER a....

The tryptophan operon is a repressible operon that is: - ANSWER-Turned off whenever tryptophan is added to the growth medium. The lactose operon is likely to be transcribed when: - ANSWER-The cyclic AMP and lactose levels are both high within the cell. For a repressible operon to be transcribed, which of the following must occur? - ANSWER-RNA polymerase must bind to the promoter, and the repressor must be inactive. Which of the following, when taken up by the cell, binds to the represso...