Which of the following is most likely an example of signaling through a transmembrane receptor? 1.The influenza virus recognizes specific proteins on the surface of host cells, causing the entrance of genetic
materials into the cytoplasm of the host cells.
2.Low-density lipoproteins (LDL) bind to receptor proteins found on the membrane of receiving cells, triggering
internalization into the receiving cells.
3.The binding of interleukin-6 (IL-6) to the interleukin-6 receptor causes the activation of protein kinases in the
cytoplasm, activating the transcription factor NF-kB.
4.The binding of aldosterone to the aldosterone receptor activates its transcription activity, leading to the trans
genes that promote the uptake of ions and water.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Building glycogen from glucose molecules is an example of what

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring