The role of creativity in scientific discovery is best illustrated
by Watson and cricks ball and stick model of DNA.
Answer:
D) Water temperature decreases; copper temperature increases
Explanation:
The temperature is a way of describing how much heat something has. Because the temperatures of the two substances are not the same, the heat is going to want to travel to the substance with less heat. Therefore, since the copper has less heat than the water, the heat will be transferred to the copper. Remember that this heat is now leaving the water. This increases the temperature of the copper and decreases the temperature of the water.
Answer:
Water, carbon dioxide, and oxygen
Explanation:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Many other transport proteins, often called pumps, move materials against a concentration gradient. Active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. This process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.