¿En cuál de los siguientes alimentos es posible encontrar una mayor cantidad de proteínas? A. Pera. B. Agua. C. Carne. D. Mantequilla.

C. Carne  

Explanation:

La proteínas representan un macronutriente (al igual que lípidos y carbohidratos) fundamental para el organismo. El consumo de proteínas es clave en la dieta porque el organismo utiliza estas moléculas (o sus bloques de construcción, los aminoácidos) para construir diferentes estructuras celulares y llevar a cabo diversos procesos vitales tales como, por ejemplo, reparar y desarrollar tejidos, funciones endócrinas, defender al organismo de agentes patógenos infecciosos, etc. En un adulto, la ingesta diaria de proteína debe rondar del 15 al 35% del total de las calorías consumidas al día, lo cual representa aproximadamente de 0.8 a 1.3 gramos por cada kilogramo de peso corporal. La carne es un alimento que aporta un gran contenido de proteínas y también es fuente de vitaminas y minerales (es decir, micronutrientes). Otros alimentos ricos en proteínas incluyen, por ejemplo, huevos, leche, legumbres (arvejas, garbanzos, lentejas) y la soja.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.