When neurons are loaded with fura-2, an increase in cytoplasmic fluorescence is expected when the neuron is depolarized. Fura-2 is a calcium indicator dye that is often used to measure changes in intracellular calcium concentration. When neurons are depolarized, there is an influx of calcium into the cell, which results in an increase in fluorescence.
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Explain Cytoplasmic fluorescence?</h3>
Cytoplasmic fluorescence is a type of fluorescence that occurs in the cytoplasm of cells. This fluorescence is caused by the presence of fluorescent molecules in the cytoplasm, which absorb and emit light at specific wavelengths. The most common fluorescent molecule in the cytoplasm is green fluorescent protein (GFP), which emits green light when excited by ultraviolet (UV) light. Cytoplasmic fluorescence is used in many biological applications, including cell imaging, protein localization, and gene expression analysis.
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The answer is D. Global warming causes the ocean temperatures to rise and also its pH to decrease due to increased dissolved carbon dioxide in the waters. Due to the unfavorable temperatures and pH, the algae dissociate from the symbiotic relationship with coral polyps (as a survival mechanism) hence leaving the coral white (coral bleaching). The symbiotic relationship is key for the survival of the coral polyps hence most die following the dissociation. This upsets the reef ecosystem and affects all aquatic organisms that depend on the reef.
Answer:
Glándula sudorípara, cualquiera de los dos tipos de glándulas secretoras de la piel que se presentan solo en mamíferos. La glándula sudorípara ecrina, controlada por el sistema nervioso simpático, regula la temperatura corporal. Cuando la temperatura interna aumenta, las glándulas ecrinas secretan agua a la superficie de la piel, donde el calor se elimina por evaporación. Si las glándulas ecrinas están activas en la mayor parte del cuerpo (como en caballos, osos y humanos), son dispositivos termorreguladores importantes. En otros animales (perros, gatos, vacas y ovejas), son activos solo en las almohadillas de las patas o a lo largo de los márgenes de los labios y pueden estar completamente ausentes en el resto del cuerpo; Tales animales a menudo dependen del jadeo para un control efectivo de la temperatura. Los mamíferos más pequeños, como los roedores, no pueden soportar la deshidratación y, por lo tanto, no poseen glándulas ecrinas.
Espero que esto sea útil! (el español no es lo que normalmente hablo, así que espero que la traducción no sea tan mala)
Answer:
Genotypic ratio of offsprings will be: 1 (Hh) : 1 (hh)
Explanation:
This question involves a single gene coding for the possession or not of Hitchhiker's thumb in humans. The allele that codes for Hitchhiker's thumb (H) is dominant over the allele for no hitchhiker's thumb (h).
Based on this question, if woman who does not have hitchhiker's thumb (hh) marries a man who is heterozygous for hitchhiker's thumb (Hh) i.e. hh × Hh, the following gametes will be produced by each parent:
hh - h and h
Hh - H and h
Using these gametes in a punnet square (see attached image), the offsprings with the following genotypic ratio will be likely produced:
1 (Hh) : 1 (hh)
N.B:
- Two (2) of them were Hh i.e. with Hitchhiker's thumb
- The other two were hh i.e. no hitchhiker's thumb.
