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Whitepunk
1 month ago
10

) which ph best describes the environment of the stomach when stimulated?

Biology
1 answer:
garik1379 [2K]1 month ago
6 0

When stimulated, the stomach's environment is characterized as acidic. It secretes protease enzymes and hydrochloric acid to assist digestion. The hydrochloric acid keeps the pH low, enabling protease enzymes to effectively break down proteins. Following digestion, the stomach returns to its normal pH level. Therefore, acid secretion coincides with food presence to support proper digestion.

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Which of the following is most consistent with homeostasis? Select one: a. As blood pressure falls, blood flow to cardiac (heart
inysia [2303]

Response:

Las respuestas más adecuadas serían tanto C como E.

Clarificación:

La homeostasis se refiere a la habilidad del cuerpo para conservar un equilibrio estable. En otras palabras, si el cuerpo sufre un estrés, generará una respuesta que contrarresta ese estrés y vuelve a restaurar su estado anterior al mismo.

A. Esto implica una relación de causa y efecto (BP bajo --> retorno venoso bajo). No describe una respuesta fisiológica activa que contrarreste la caída de BP, como el aumento de la frecuencia cardíaca. No es homeostasis.

B. Nuevamente se describe una relación de causa y efecto. El engrosamiento de las paredes de los vasos sanguíneos no es una respuesta para contrarrestar el aumento de BP. No es homeostasis.

C. Aquí se describe una respuesta a un estrés. Los hombres están ingiriendo más agua. El cuerpo reacciona desechando ese exceso de agua, regresando el organismo a su estado anterior. Esto ilustra la homeostasis.

D. Esto suena como homeostasis, pero en realidad es lo opuesto a lo que sucede. La dilatación de los vasos sanguíneos periféricos es una forma en que el cuerpo pierde calor. Esto es lo contrario de lo que se debería hacer si el cuerpo se enfría; esto agravaría el estrés, lo que es contrariamente a la homeostasis. La respuesta natural a temperaturas frías es la constricción de los vasos sanguíneos para conservar el calor.

E. Esto describe homeostasis. El estrés es un aumento de glucosa. La respuesta del organismo para manejarlo es liberar insulina, que ayuda a reducir la glucosa de la circulación.

5 0
1 month ago
Differentiate between gamopetalous and polypetalous​
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Answer:

The distinction between polypetalous and gamopetalous lies in the fact that polypetalous refers to (botany) a corolla comprising separate, distinct petals, while gamopetalous refers to (botany) petals that are completely or partially fused, resulting in a tubular corolla.Explanation:

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Example:

C3H8 + 5O2 → 3CO2 + 4H2O + heat.
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26 days ago
The prosthetic group of hemoglobin and myoglobin is . The organic ring component of heme is . Under normal conditions, the centr
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The inquiry posed is inaccurate. The correct question is as follows: The prosthetic group of hemoglobin and myoglobin is _______? The organic ring component of heme is _______? Under standard conditions, the central atom of heme is ________? In ________, the iron atom at the center is shifted 0.4 Å out of the plane of the porphyrin ring system. The central iron atom has _______ bonds: ________ to nitrogen atoms in the porphyrin, one to a _______ residue and one to oxygen. Hemoglobin is a crucial protein that carries oxygen throughout the body and contributes to the red color of red blood cells. Myoglobin facilitates oxygen transport in muscle tissues. The heme molecule functions as a prosthetic group for both hemoglobin and myoglobin, consisting of a porphyrin ring. The heme molecule contains an iron atom, specifically Fe2+. The deoxyhemoglobin states emerge when the central atom is displaced by 0.4 Å. The iron atom at the center can create six bonds, four to the nitrogen in the porphyrin, one to a histidine residue, and one to oxygen. Histidine serves as a blood buffer.
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