Answer:
C. active transport driven directly or indirectly by metabolic energy
Explanation:
The intestinal mucosa is the tissue that lines the inner walls of the intestines. It is characterized by the pleated appearance, which facilitates the absorption of nutrients already deferred and the formation of fecal cake. Most nutrients are absorbed by this region through active transport directly or indirectly driven by metabolic energy.
Choice C. Educated guess or a prediction that can be tested, based on limited evidence.
The structure of the skin is an effective barrier against bacteria. The multiple layers of epidermis, while can be invaded by foreign organisms, has a high turnover rate which means it is constantly shedding, therefore even the bacteria is shed protecting the body. Lastly, the skin's lipids maintain an acidic pH which slows and stops growth and replication of bacteria.
Where are the choices? What following answers?
In DNA<span>, the code letters are A, T, G, and C, which stand </span>for<span> the chemicals </span>adenine<span>, thymine, guanine, and cytosine, respectively. In base pairing, </span>adenine always pairs<span> with thymine, and guanine </span>always pairs<span> with cytosine.</span>
