Answer:
When the energy is absorbed in a chemical reaction, we can say that this is an endothermic reaction.
Explanation:
An endothermic reaction is a chemical reaction that absorbs energy instead of releasing energy, like exothermic reactions.
To be considered an endothermic reaction, the chemical reaction must have a low energy reagent and for that reason, they need to absorb energy so that there is a rearrangement of the reactant molecules, forming products with high energy.
Answer:
Cell Shape: Large surface area = Function: Absorption/metabolism increases
Explanation:
The large the surface area of a cell allows for more receptors to interact to increase the amount of metabolism that occurs within the cell. The example you provided, columnar and epithelial cells, are found in various locations throughout the body but are most notable found in the intestinal lining of our intestines. The shape of the columnar which is made up of epithelial cells is waved shaped to allow for more surface area within a given location. Consequently, leading to further absorption.
Swollen lymph nodes is the sign of infection because swollen lymph nodes usually occur as a result of exposure to bacteria or viruses. When swollen lymph nodes are caused by an infection, this is known as lymphadenitis (lim-fad-uh-NIE-tis). Rarely, swollen lymph nodes are caused by cancer.
Your lymph nodes, also called lymph glands, play a vital role in your body's ability to fight off infections. They function as filters, trapping viruses, bacteria and other causes of illnesses before they can infect other parts of your body. Common areas where you might notice swollen lymph nodes include your neck, under your chin, in your armpits and in your groin.
Fertile land is lost, and there is increased pollution and sedimentation in rivers and other aquatic areas.