Mark the following statements as true or false. If a statement if false, correct it to make a true statement.
a. An excitatory postsynaptic potential is caused by
b. Postsynaptic potentials may summate by spatial summation in which multiple neurons fire onto a single postsynaptic neuron.
c. An inhibitory postsynaptic potential causes the membrane potential of the postsynaptic neuron to approach threshold.
d. Spatial summation can combine two EPSPs, two IPSPs, or an EPSP and an IPSP.
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Chapter 11 Solutions
Human Anatomy & Physiology Plus Mastering A&P with Pearson eText -- Access Card Package (2nd Edition) (What's New in Anatomy & Physiology)
- describe one way in which Public Health professionals have tried to combat the problem of tobacco use in the US. Describe the full scope of this strategy/and or intervention. How did it work to combat tobacco use? Identify and describe one challenge for implementation of this strategy/intervention. 2. Would this strategy be classified as regulation or education? 3. Was this intervention/strategy successful? Why or why not?arrow_forwarda) Find a nitrogen base. What carbon is the base attached to? b) What two nitrogenous bases are held together by 2 hydrogen bonds? c)What two nitrogenous bases are held together by 3 hydrogen bonds?arrow_forwardYou will be building a double-stranded DNA molecule, representing a short (20 base) sequence that could be found in a chromosome. It will have a 3' --> 5' strand and a 5' --> 3' strand. Use two full 12-base-pair DNA models. a) Upload a photo of a model once the first 6 nucleotides have been inserted to base pair with the two parent strands. b)Upload a photo of DNA polymerase I and Ligase in "action" removing the RNA primer nucleotides and making new phosphodiester bonds. c)Upload a photo of the final two DNA strands, after Termination, identifying the parent and daughter strands of each.arrow_forward
- Write down the 12 base-pairs (ex A-T or G-C) contained in the two models you will us from top to bottom below Model 1 bp: Model 2 bp:arrow_forwarda) What type of bond does helicase break? b) Which of these two types of bonds is stronger? c) Describe why it is necessary for the lagging strand to be made in fragments, called Okazaki fragments.arrow_forwarda) How are the model single nucleotides structurally different than real-life dNTPs? b)If you wanted to make these DNA nucleotides into RNA nucleotides, what could you do to them? c)Name the type of bond that is being formed by DNA Polymerase III.arrow_forward
- You will be building a double-stranded DNA molecule, representing a short (20 base) sequence that could be found in a chromosome. It will have a 3' --> 5' strand and a 5' --> 3' strand. Use two full 12-base-pair DNA models. a) Upload a picture of your model reflecting the Initiation phase of DNA replication. b) Upload a picture of your model once it has entered the Elongation phase of DNA replication, showing the action of Primase. c)Upload a picture of your model once it has entered the Elongation phase of DNA replication, showing the action of DNA Polymerase III.arrow_forwarda)What region of the DNA do general transcription factors and RNA polymerase bind to? b)Where, in a eukaryotic cell, can one find TFs? c)What are the TFs called that bind to Enhancer Sites? d)Describe the role of Activators and Repressors in development.arrow_forwarda) Describe how mRNA and tRNA interact. b)Translate the following mRNA codons: AUG GUU AAC CAG UGA c) What are transcription factors made of?arrow_forward
- a) State the Central Dogma of Molecular Biology in your own words. b) What enzyme synthesizes mRNA? c) Describe mRNA splicing.arrow_forwardGive me detailed Solution. Don't give Ai generated solutionarrow_forwarda) The lux operon is under positive control. Based on this information, does the luxR regulator sequence make a repressor protein or an activator protein? b) How will binding of this complex affect RNA polymerase? Remember this operon is under positive control. c) AHL is a signal molecule that V. fisheri makes to communicate with neighboring bacterial cells. This molecule can diffuse outside of the cell and into another bacterial cell in close proximity. This type of communication between bacterial cells is known as quorum sensing. If bacterial cell density is low how will this affect the lux operon? What will happen if the density is high?arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning