Answer:
Double stranded RNA may affect gene expression negatively
Explanation:
Double stranded RNA are molecules that can affect negatively the gene expression by the fact that this kind of molecule can be complementary to others RNA molecules, or also to DNA regions on the genome. Therefore, introducing such molecules in mammalian cells can inactivate the transcription of a specific gene by the fact that those molecules could block regions of the genome that code for a gene or by connecting to some RNA molecules by similarity. Such mechanisms will reduce the production (or expression) of a given protein in these cells.
Answer:
A. Gas is added to the bladder as the fish's depth increases.
Explanation:
The swim bladder is a gas-filled organ localized in the dorsal region of Osteichthyes (bony fish) that allows them to regulate buoyancy, thus maintaining water depth without swimming. Since the swim bladder localizes in the dorsal region, it also functions as a stabilizing organ. This organ is composed of two sacs whose walls contract and expand in response to water pressure. The swim bladder contains an oval window that enables to adjust buoyancy in order to maintain a constant depth, or to ascend or descend in a wide range of water depths.
<span>. Recharge zone ... Area of land that is drained by a river ... Area of land through which water percolates and is stored as groundwater.</span>
Collagen is a protein fiber that is found in the matrix that lies outside the bone cells. Population of these collagen fibers that scattered through the matrix are embedded in a gel-like ground substance called hyaline cartilage, which is flexible but avascular and contains no nerves or blood vessels.
The uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.