1 ¿Qué oración de la sección “Las vacunas ayudan a los cuerpos a combatir los virus” explica CÓMO los anticuerpos ayudan a las personas?
(A) Su cuerpo ve el virus débil como un ataque.
(B) Comienza a producir anticuerpos.
(C) Estas son proteínas.
(D) Ayudan a combatir el virus si lo vuelven a ver en el futuro.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

japan is the correct anwser because i already took the test and i passed it