? 1. las sustancias puras son compuestos químicos. 2. las sustancias simples son sustancias puras. 3. una disolución es una mezcla heterogénea de dos componentes: el disolvente y el soluto. 4. los coloides son mezclas homogéneas de aspecto heterogéneo.

What type of genetic drift would be simulated if all the beans that were not selected died out?

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy