ANSC 423 Exam 1 || with A+ Guaranteed Solutions.

Transmembrane receptors belonging to the 'receptor tyrosine kinase' superfamily do NOT involve/activate G-protein for signaling. correct answers True Choose the CORRECT answer about facilitated diffusion: correct answers process that require facilitation by a specific channel protein Binding of inositol triphosphate (IP3) to its receptor on smooth endoplasmic reticulum releases the following ion(s) into the cytoplasm correct answers Sodium Physiological functions of cells are carried out by reversible changes in protein shape by one or more of the following correct answers ligand binding, covalent modifications such as phosphorylation, changes in voltage and/or pH Transport of amino acids across the cell membrane from a higher concentration to a lower concentration require the following factor(s) correct answers availability of transporter protein in the cell membrane Failure of Na+/K+ ATPase pump in neurons will result in correct answers insensitivity and failure to generate or conduct action potentials Activation of heterotrimeric G-protein by the 'first messenger' leads to one/all of the following correct answers activation or inhibition of adenylyl cyclase enzyme activity The presence of transporters in the cell membrane NOT required for the transport of one OR more of the following substances from the extracellular fluid (space) into the cytoplasm correct answers carbon dioxide Choose a neurotransmitter from the following list that is a gas correct answers nitric oxide Depolarization of post-synaptic membrane of adjacent neuronal soma or dendrite denotes a reversible change in polarity inside the cell membrane correct answers from -70mV to +20mV Motor neurons in the extrapyradmial tract regulate correct answers anti-gravity muscles and posture of an animal Glial cells produce action potential similar to neurons correct answers false Neurotransmitters released into the synapse are correct answers metabolized by enzymes, recycled into the pre-synaptic terminal Pick the correct choice that represents the ascending order of hierarchy in the central nervous system correct answers spinal cord, midbrain, cerebral hemispheres