I believe the answer is: D) supplying oxygenated blood to the arteries that travel to all major parts.
The function of the aorta is to supply oxygen-rich blood to the rest of the body into systemic circulation. This differs from answer choice A because choice A seems to be discussing pulmonary circulation, as opposed to systemic. (Pulmonary circulation occurs within the heart and lungs; systemic circulation occurs throughout the body.) Therefore, if the aorta of a human heart is damaged, the ability to supply oxygenated blood to major body parts would be affected.
Well, since its about it needing to survive and reproduce in a specific environment, it should be fitness.
Answer:
i think a im not sure if its 100% so double check
Explanation:
All of the cells within a complex multi-cellular organism such as a human being contain the same DNA; however, the body of such an organism is clearly composed of many different types of cells.
<u>What, then, makes a liver cell different from a skin or muscle cell</u> is <em>the way each cell deploy (utilizes) its genome</em>. In other words, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. This process of gene expression is <em>regulated by cues</em> from both within and outside cells, and the<em> interplay </em>between these cues and the genome <u>affects essentially all processes</u> that occur during embryonic development and adult life.
Outside/Environmental cues include small molecules, secreted proteins (growth factors or signaling molecules), temperature, and oxygen.
The signaling molecules trigger intercellular signaling cascades (series of chemical reactions) that ultimately cause semipermanent changes in expression of genes. Such changes in gene expression can include turning genes completely on or off.
This process is thought to regulate a vast number of cell behaviors, including cell fate decisions during embryogenesis, cell function, and chemotaxis (i.e. cell movement in response to concentration gradient of a particular substance.)
Answer:
They are the digestive and the respiratory systems (O2 as nutrient and CO2 as waste)