The basilar membrane is relatively permeable to perilymph in the scala tympani, and tunnel of the organ of Corti and the bases of the hair cells are bathed in perilymph

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#Id: 2073

#Unit 8. Inheritance Biology

Number of Barr bodies zero in human cells with different complements of sex chromosomes such as XO (loss of one sex chromosome) causes Turner Syndrome.

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#Id: 6883

#Unit 3. Fundamental Processes

Inactive X chromosome also becomes associated with PRC2 complexes, which catalyze the trimethylation of histone H3 lysine 27. This methylation results in association of the PRC1 complex and transcriptional repression

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#Id: 5469

#Unit 7. System Physiology – Animal

Once an impulse reaches the presynaptic terminals, a response can be obtained in the postsynaptic neuron after a Synaptic delay.

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#Id: 9675

#Unit 4. Cell Communication and Cell Signaling

PDK1 can phosphorylate PKB on a critical threonine residue in its activation loop

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#Id: 4008

#Unit 7. System Physiology – Animal

SA node has an unstable resting membrane potential. The “resting membrane potential” of the sinus nodal fiber between discharges has a negativity of about −55 to −60 millivolts.