I think what you are asking about is a carrier. A carrier can have the gene for a disorder and not show any symptoms but still pass that disorder on to her offspring.
Hope that helps
The answer is B, fossil fuels take a long time to form and humans use lots of them everyday
The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelope them.
About this much of the energy released from food molecules during catabolism is released as heat: adenosine triphosphate (ATP)
The Adenosine triphosphate (ATP) is the source of the energy for the use and the storage at the cellular level. The structure of the ATP is a nucleoside triphosphate, consisting of the nitrogenous base (adenine), and ribose sugar, and the three serially bonded phosphate groups
ATP is synthesized in the mitochondria is the primary energy source for the important biological functions, such as the muscle contraction, the nerve impulse transmission, and the protein synthesis
In general, the main energy source for the cellular metabolism is the glucose, which is the catabolized in the three subsequent processes—the glycolysis, tricarboxylic and acid cycle (TCA or Krebs
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