How does a catalyst speed up chemical reactions?

The state achieved when energy from food equals energy expended, maintaining body weight is known as

Which two factors are most commonly used to classify climates? temperature and rainfall precipitation and humidity humidity and wind speed

Which of the following describes the tundra biome? A. characterized by frost-molded landscapes B. characterized by short growing seasons C. characterized by little precipitation D. all of the above

If element X has 68 protons, how many electrons does it have?

What structure is used to seal the DNA into an opening created by the restriction enzyme during recombinant DNA technology

Bones, joints, ligaments, and cartilage are parts of the a) refrigerator b) muscles c) skeleton

Chloroplasts cannot move on their own. How do they move around the cell?

What causes leaves to dry out

And increase in food and a decrease in predators would most likely

Which would provide the body with the most energy? a. Carrying oxygen from the lungs to the cells b. Breaking the bonds in a disaccharide c. Breaking a single carbon bond d. Creating bonds to make a simple sugar