They all contain at least one cell, and they need need food, water, energy, and living space to survive. They are both considered living organisms as well. They depend on abiotic and biotic factors in an ecosystem to survive.
Answer:
Signal transduction
Explanation:
A signal molecule binds to a receptor.
A conformational change in the signal-receptor complex activates an enzyme.
Second messenger molecules are released.
Protein kinases are activated.
Target proteins are phosphorylated.can be defined as the process in which a physical or chemical signal is transmitted through a cell as a series of molecular events inform of protein phosphorylation are catalyzed by protein kinase and this ultimately result into a cellular response. However, the protein that is responsible for the detection of stimuli is commonly refers to as receptors or sensor.
D. A protein catalyst in a living organism
The classifications of the carbon as primary secondary tertiary and quaternary depends on the number of the carbon atoms attached to a carbon. In case, the carbon is attached to a single carbon, then it is referred as primary carbon. If the carbon is attached to two carbons, then it is referred as the secondary carbon, if the carbon is attached to three carbons then it is referred as tertiary, and if the carbon forms all the bond with another carbon atom then it is referred as quatenary carbon.
The given below is the picture showing the primary, secondary, tertiary, and quarternary carbons in 4-isopropyl-2,4,5-trimethylheptane: