An H+ ATPase in the membrane pumps H+ into the lysosome, maintaining its lumen at an acidic pH.

TLS Online TPP Program

#Id: 10531

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 6604

#Unit 7. System Physiology – Animal

Theca cells synthesize and secrete progesterone.

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#Id: 9887

#Unit 4. Cell Communication and Cell Signaling

Eat me” signals

Dying cells facilitate their own phagocytosis by expressing on their surfaces such as phosphatidyl serine and lysophosphatidyl choline, proteins (annexin I), and altered carbohydrates. 

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#Id: 2564

#Unit 13. Methods in Biology

The loop region of the beacon is designed to bind specifically to a target nucleic acid. Thus, in the presence of the target nucleic acid, the stem region of the beacon becomes separated, releasing the fluorophore from the quencher such that active fluorescence can be observed.

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#Id: 1687

#Unit 4. Cell Communication and Cell Signaling

Recombination between the VH and D-JH segments follows during the pro-B-cell stage.