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TLS Online TPP Program

#Question id: 11223

Of those listed, which event occurs first following a depolarizing stimulus applied to the presynaptic membrane of an axon terminal?

#Unit 7. System Physiology – Animal
  1. Voltage-gated calcium channels in the membrane open.
  2. Synaptic vesicles fuse with the membrane
  3. The postsynaptic cell produces an action potential.
  4. Ligand-gated channels open, allowing neurotransmitters to enter the synaptic cleft.
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TLS Online TPP Program

#Question id: 27931

#Unit 11. Evolution and Behavior

Match the following evolutionary changes with their pattern of evolution
TLS Online TPP Program

#Question id: 31417

#Unit 2. Cellular Organization

Put these events in the correct temporal order: 
a. End plate potential (EPP)
b. Action potential in muscle fiber
c. ACh release from presynaptic terminal
d. MEPP
e. Opening ligand-gated ion channels
f. Opening Ca2+ channels in presynaptic terminal
g. Binding of ACh to nicotinic receptors,
h. Action potential in nerve fiber
TLS Online TPP Program

#Question id: 28746

#Unit 2. Cellular Organization

In mammalian cells, where does β oxidation occurs?
a) Mitochondria
b) Peroxisomes
c) Endoplasmic reticulum
d) Lysosome
TLS Online TPP Program

#Question id: 2818

#Unit 2. Cellular Organization

Human mitochondrial DNA
TLS Online TPP Program

#Question id: 26350

#Unit 2. Cellular Organization

Heterochromatic regions, silenced genes, and gene-sparse regions of chromosomes are typically localized to the.