Laurie told her friend Sandi, "I had a headache this morning so I used an old family cure: Three sips of ginger ale, and an hour later my head felt better." Sandi replied, "I am glad you are feeling more comfortable now, but maybe the sheer passage of time made your headache go away." Sandi is offering a(n) in response to Laurie's explanation.
a) rival hypothesis
b) causal correlation
c) falsifiable pretext
d) extraordinary claim

Explanation:

hipotesis rival debido a que son aquellas que se presentan como respuesta a un problema y han superado exitosamente contrastaciones empíricas.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

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.