The movement of food from the stomach into the esophagus is usually prevent by the sphincter
<span>I usually think of biology first, and then physics. I trust those types of science a whole lot more than social sciences. I don't think of it like most non-sciency people do (like with diet pills and perfume). I think of it like using the actual scientific method, doing the same thing over and again expecting different results, taking the objective (or subjective, when that applies) results and forming a logical conclusion and not one that fits your hypothesis/agenda. Kind of like those kids that every high school has (on TV shows, they're the ones that are doing something with robotics all the time) that are nerdy, science geeks always running experiments and seeing what happens. </span>
Answer:
Dissolved or gaseous substances have to pass through the cell membrane to get into or out of a cell. Diffusion occurs when particles spread. ... They move from a region where they are in high concentration to a region where they are in low concentration.
Explanation:
Mark me as brainliest and follow me
There is more to DNA than cytochrome c. This is just one protein.
Answer:
a. to treat a disease characterized by a gene that is not expressed.
Explanation:
The RNA interference (RNAi) technique is widely used in molecular biology to inhibit target gene expression at the post-transcriptional level. The RNAi technology uses small interfering RNAs (siRNAs) consisting of 18-22 nucleotides that bind to complementary acid nucleics (i.e., DNA and RNA), thereby inhibiting target gene expression. Recently, it has interestingly been discovered that small RNA sequences targeting promoter regions can also be used to activate the expression of endogenous target genes through a mechanism called RNA activation (RNAa).
