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3 years ago

¿por qué es distinta la tasa metabólica basal y el consumo de kcal recomendadas?

Biology

1 answer:

adoni [48]3 years ago

8 0

Answer:

Muchas personas suponen erróneamente que la BMR = calorías de mantenimiento. Eso no es asi. La BMR (tasa metabólica basal) es la cantidad de calorías que su cuerpo necesita para funcionar. Eso significa mantener todos los órganos vitales como el corazón y las funciones básicas como la respiración.

La mayoría de las personas, además de respirar y descansar, también hacen otras cosas durante el día, como caminar y, a veces, incluso estar activas.

Todas estas actividades requieren un mayor gasto de calorías que el BMR. Entonces, para cambiar su peso, necesita encontrar cuáles son sus calorías de MANTENIMIENTO. Las calorías de mantenimiento son sus calorías de BMR + la cantidad de calorías que gasta durante el día haciendo sus actividades diarias (por ejemplo, caminar o hacer deporte).

Si su objetivo es aumentar de peso, debe ingerir más calorías que las de mantenimiento. Para las personas que están tratando de perder peso, primero deben calcular su BMR y sus calorías de mantenimiento. Después de eso, necesitan comer menos calorías que sus calorías de mantenimiento, pero aún más que su BMR.

Explanation:

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3 years ago

In regards to photovoltaic cells found in solar panels scientists are researching types of batteries to store the energy in when

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3 years ago

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The act of breathing raises the blood oxygen level, lowers the blood carbon dioxide concentration, and raises the blood pH. Acco

tino4ka555 [31]

Answer:

A rise in blood carbon dioxide concentration.

Explanation:

The feedback regulation may be defined as the process in which the end product of the metabolic pathway regulates the homeostasis of the body. Two main types of feedback are positive feedback and negative feedback.

The negative feedback mechanism occurs when the end product of the reaction is responsible for the shutdown of the metabolic pathway and decreases its concentration. The breathing is controlled by the negative feedback mechanisms, the increase in carbon dioxide concentration acts as the negative sensor as this sensor is mainly responsible for the increase in amount of oxygen level and maintain homeostasis of the body.

Thus, the correct answer is option (c).

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3 years ago

Two protein kinases, K1 and K2, function sequentially in an intracellular signaling pathway. If either kinase contains a mutatio

Korolek [52]

Answer:

The order must be K2→K1, since the permanently active K1 allele (K1a) is able to propagate the signal onward even when its upstream activator K2 is inactive (K2i). The reverse order would have resulted in a failure to signal (K1a→K2i), since the permanently active K1a kinase would be attempting to activate a dead K2i kinase.

Explanation:

You characterize a double mutant cell that contains K2 with type I mutation and K1 with type II mutation.
You observe that the response is seen even when no extracellular signal is provided.
In the normal pathway, i f K1 activat es K2, we expect t his combinat ion of two m utants to show no response with or without ext racell ular signal. This is because no matt er how active K1 i s, it would be unable to act ivate a mutant K2 that i s an activit y defi cient. If we reverse the order, K2 activating K1, the above observati on is valid. Therefore, in the normal signaling pathway, K2 activates K1.

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3 years ago

Retroviruses, such as human immunodeficiency virus, rely on reverse transcriptase to multiply inside a cell. However, HIV also r

Serga [27]

Answer:

DNA ⇄ RNA → PROTEINS.

Explanation:

Central dogma explains the flow of genetic information of the living organism. The DNA is converted to RNA by transcription and further into protein product by the process of translation. DNA can increase its number by replication process.

Retroviruses do not follow the central dogma and they have the ability to convert the RNA into the DNA molecule by the enzyme reverse transcriptase. Their central dogma is as follows:

DNA ⇄ RNA → PROTEINS.

Thus, the answer is DNA ⇄ RNA → PROTEINS.

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3 years ago