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Bio 3421 Exam 1 (TXST)-Davenport Questions With Complete Solutions

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19 pages

Written in 2023/2024

Classroom

Bio 3421 Exam 2 (TXST)-Davenport Questions with Complete Solutions Endocrine system - Correct Answer The body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream Nervous system - Correct Answer The body's speedy, electrochemical communication network, consisting of all the nerve cells of the PNS and CNS Peptides - Correct Answer o Chain of amino acids o Majority of hormones fall into this category o Hydrophilic Amine - Correct Answe...

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8 pages

Written in 2023/2024

Grade A+

Winfred

Bio 3421 Exam 1 (TXST)-Davenport 157 Exam Study Guide Questions with Correct Answers Characteristics of living things - Correct Answer -Be able to reproduce -Have cells -Be able to respond to stimuli -Obtain energy -Evolve -Homeostasis What is physiology? - Correct Answer The study of the processes or functions of organisms and how living things work Basics on levels of organization - Correct Answer Molecules--> cells--> tissues --> organs --> systems-->organisms Homeostasis - Cor...

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11 pages

Written in 2023/2024

Grade A+

oassignment

Characteristics of living things -Be able to reproduce -Have cells -Be able to respond to stimuli -Obtain energy -Evolve -Homeostasis What is physiology? The study of the processes or functions of organisms and how living things work Basics on levels of organization Molecules--> cells--> tissues --> organs --> systems-->organisms Homeostasis Living things maintain this, process by which an organism maintains equilibrium or internal consistency Negative feedback -Main regulator...

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11 pages

Written in 2023/2024

Grade A+

twishfrancis

1. In the nervous system, the term membrane potential refers to the separation of charges across a biological membrane 2. Resting membrane potential is attributable primarily to the presence of ____________ channels in the plasma membrane voltage-gated 3. Calculate the equilibrium potential for potassium, the concentration of which is 4 mM extracellularly and 115 mM intracellularly R = 1.987 cal mol-1K-1, T = 310 K and F = 23,067 cal mol-1V-1 -90 mV 4. Given a pathway, potassium flows _______...

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5 pages

Written in 2023/2024

Grade A+

twishfrancis

Excitable Cells Capable of undergoing transient, rapid changes in their membrane potentials (action potentials) Nerve cells (neurons) receive, process, initiate and transmit messages Muscle cells contract Polarization Charges are separated across the plasma membrane Depolarization Vm becomes less negative. Repolarized Vm returns to resting potential after depolarization Hyperpolarized Vm is more negative than the resting potential Changes in Vm result from ion movement through ion channels ...

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7 pages

Written in 2023/2024

Grade A+

twishfrancis

PhospolipidsMost abundant membrane component Head contains negatively charged phosphate group (hydrophilic) Two nonpolar fatty acid tails (hydrophobic) Assemble into lipid bilayer with hydrophobic tails in the center and hydrophilic heads in contact with water Fluid - phospholipids held together by van der Waal's forces Cholesterolbetween phospholipids; prevents crystallization of fatty acid chains Maintains fluidity, esp. in cold temperatures Decreases permeability, esp. in warm temps Cold-in...

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8 pages

Written in 2023/2024

Grade A+

twishfrancis

Bio 3421 Exam 1 (TXST)-Davenport 157 Exam Study Guide Questions with Correct Answers Characteristics of living things - Correct Answer -Be able to reproduce -Have cells -Be able to respond to stimuli -Obtain energy -Evolve -Homeostasis What is physiology? - Correct Answer The study of the processes or functions of organisms and how living things work Basics on levels of organization - Correct Answer Molecules--> cells--> tissues --> organs --> systems-->organisms Ho...

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14 pages

Written in 2023/2024

Grade A+

Winfred