Endotherms need to consume more food to keep their metabolism up and maintain consistent temperatures (homeotherapy). This is because they are a warm-blooded organism which is dependent on the internal generation of heat.
Falso porque natural selection is actually the process where organisms that are better adapted to their environment tend to produce more offspring than those that have a disadvantage
Kinases. Kinases add phosphate to molecules, and the modification can serve as a "switch" to turn events in the cell on or off. CDKs or cyclin dependent kinases regulate the cell cycle.
A challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that embryos of dissimilar organisms, such as sharks and humans, resemble each other. Embryology involves the study of the formation and the development of an embryo and the fetus. It is one type of evidence of evolution such that the embryos of many different kinds of animals, mammals, reptiles, birds, fish among others, are similar showing a common ancestry.
The answer to your question is Letter C <-- ANSWER
Steroid is a molecule made up of four carbon rings with other atoms bonded to those rings.
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