Answer:
OB) evenly spaced time segments
Explanation:
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Mitochondrial DNA mutation occurs at a constant rate throughout history. Thus, each different base in Mitochondrial DNA is able to show just how long ago the 2 species diverged from each other.
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Answer:
-Small molecules are converted into complex organic compounds.
-The reaction requires an input of energy
Explanation:
Reactions in nature can either be energy-requiring or energy-releasing. Reactions that require energy are called ENDERGONIC reactions i.e. energy is needed to start the reaction provees. They are characterized by the INPUT OF ENERGY.
Also, when small molecules are converted into complex organic compounds by combining together in a process called ANABOLISM, energy is needed to put together the molecules to form a much larger complex molecules. Hence, it is a feature of energy-requiring reactions.
Answer:
Three types of muscles are the cardiac muscles, smooth muscles, and the skeletal.
an example of a cardiac muscle muscles that contract the heart to pump blood. this heart muscle is a striped muscle in the walls of the heart. it is involuntary meaning a person cannot control it consciously.
an example of a smooth muscle is muscle tissue which is used by various systems to apply pressure to vessels and organs. this muscle is also involuntary and are usually in sheets or layers. your brain and body tell these muscles what to do without you even thinking about it.
an example of skeletal muscle are your biceps, deltoids, or even pectoralis. this muscle is called striated, meaning long or streak like, because the light and dark parts of the muscle fibers make them look striped(striated). these muscles are voluntary, which means they can control what you do.
