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Afina-wow [57]
3 years ago
14

Lupus is a temporary disease that can be cured easily. *false

Biology
1 answer:
Nataly_w [17]3 years ago
5 0

Answer:

true

Explanation:

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"in a chemical synapse, neurotransmitters are spilled into the synaptic cleft by what action?"
34kurt
Starting from the triggering action potential, the membrane potential in the neuron will propagate from the dendrites to the cell body then to the axons where synaptic vesicles are located. The action potential will trigger an influx of calcium into the axon then calcium will bind to proteins that will move the synaptic vesicles to the synaptic cleft. The membrane of the synaptic vesicles will eventually join the membrane of the synapse and then the neurotransmitters inside the vesicles will be "spilled" into the synaptic cleft.
3 0
3 years ago
Asi todas las células son muy pequeñas. ¿Qué limitaciones físicas y metabólicas determinan el tamaño celular? ¿ A qué problemas
N76 [4]

Answer:

- Limitación física: la relación superficie volumen es baja para un intercambio eficiente de sustancias con el medio

- Limitación metabólica: en principio no existen limitaciones metabólicas  

Explanation:

La membrana celular es una estructura fundamental para el funcionamiento celular, ya que de la membrana celular depende el intercambio de nutrientes y desechos por parte de la célula con su entorno (medio extracelular). En células muy grandes la relación entre la superficie cubierta por la membrana y el volumen celular es muy baja, lo cual dificulta el intercambio de compuestos (tanto nutrientes como desechos) con el medio extracelular. Por otro lado, los mecanismos metabólicos en principio no deberían verse afectados por el tamaño celular. Por ejemplo, los perfiles metabólicos de expresión génica son independientes del tamaño celular y están adaptados a diferentes tipos celulares, desde una célula huevo que es proporcionalmente varias veces más grande que un célula diferenciada la cual sin embargo no ha perdido la capacidad de dividirse, un ejemplo de esto son las células cancerosas derivadas de células epidérmicas diferenciadas las cuales poseen la capacidad de dividirse y de proliferar indiscriminadamente.

5 0
3 years ago
Anaphase II is essentially the same as mitotic anaphase except that in anaphase II ________ and in mitotic anaphase ________. cr
Dafna11 [192]

Answer:

In anaphase II  the cells are haploid and sister chromatids separate and in mitotic anaphase he cells are diploid and sister chromatids separate

Explanation:

3 0
3 years ago
Why would increasing the synthesis of fetal hemoglobin result in alleviating the symptoms of sickle cell anemia?
Leto [7]
Cell anemia, the increased synthesis of Hb F allows the patient to use Hb F
7 0
3 years ago
(drag and drop) (20 points)
mixas84 [53]

Answer:

Less stable : An ecosystem with populations that mate with only related species

Less stable : An ecosystem that has many species at every trophic level

More stable : An ecosystem with populations that mate with unrelated species

More stable : An ecosystem that has very few species at every trophic level

3 0
3 years ago
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