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Exam (elaborations)
BIO 467 Exam 1 Questions with Correct Answers Latest Update 2025/2026
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---8December 20252025/2026A+
- BIO 467 Exam 1 Questions with Correct Answers Latest Update 2025/2026 
what is the membrane potential (Vm) of a cell that is equally permeable to sodium, potassium, and chloride ions? - Answers - 0 mV 
- if 2 compartments contain channels for all charged ions, movement of + ions will be followed and balanced by movement of negative ions. therefore, no separation of charge forms across the membrane and each solute simply diffuses down its own concentration gradient until its the same on both side...
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TutorJosh
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Exam (elaborations)
Bio 467 exam 1 || All Answers are Valid.
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---11July 20252024/2025A+
- what is the membrane potential (Vm) of a cell that is equally permeable to sodium, potassium, and chloride ions? correct answers - 0 mV 
- if 2 compartments contain channels for all charged ions, movement of + ions will be followed and balanced by movement of negative ions. therefore, no separation of charge forms across the membrane and each solute simply diffuses down its own concentration gradient until its the same on both sides 
- a membrane must be selectively permeable to a charged ion to...
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SirAnton
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Exam (elaborations)
BIO 467 Exam 1 Review Graded A 2025
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---3April 20252024/2025A+
- 1. You are studying a mammalian pyramidal neuron in an artificial CSF bath (4 mM K+, 135 mM Na+, and 100 mM Cl−) at 37 °C (310.15 K). It has intracellular [ion] of 140 mM K+, 5 mM Na+, and 20 mM Cl−. At rest, the neuron has relative permeabilities for K+, Na+, and Cl− of 1.00:0.05:0.45 (PK+:PNa+:PCl−). Its threshold potential is −45 mV. The primary neurotransmitter this neuron releases at its synaptic terminals is glutamate. This neuron receives both excitatory and inhibitory input fr...
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Terry75
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Exam (elaborations)
BIO 467 EXAM 2 - LEFT/RIGHT AXIS Questions & Answers 100%
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---4September 20242024/2025A+
- The steps of L/R axis establishment that are similar across species - Answers1. Some initial symmetry breaking event in the early embryo 
2. Magnification of that asymmetry by the L/R organizer. The LRO is a transient, midline-located structure 
3. The LRO establishes patterns of asymmetric gene expression in the lateral plate mesoderm (an influx in Ca2+-->nodal production-->Pitx2 expression on left side) 
4. The L/R asymmetry is elaborated at a morphological level 
 
LROs in the various...
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Bestgrades2
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Exam (elaborations)
Bio 467 Final Exam Review Questions & Answers
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---6September 20242024/2025A
- Which of the following genes appear to be selectively expressed in large motor neurons located in the mature spinal cord ventral horn - ANSWERSSlc18a3 
 
Which of the following statements regarding lower motor neurons is false? 
a) They utilize the neurotransmitter acetylcholine to trigger muscle contraction at a neuromuscular junction. 
b) Lower motor neurons that innervate the muscles in your hand are located in the medial ventral horn. 
c) In adults, a single, lower motor neuron typically inn...
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Bestgrades2