The minimum amount of energy that reactants must have to start a chemical reaction is called
A. potential energy.
B. mechanical energy.
C. kinetic energy.
D. activation energy.
E. electromagnetic energy.
D
You might also like to view...
The design of a person's epidermal ridges is determined by the manner in which the papillae rest upon the dermal ridges to produce the specific pattern known as handprints, footprints, and fingerprints. Which of the following statements is true regarding these prints or ridges?
A) Every human being has the same pattern of ridges. B) They are genetically determined, therefore unique to each person. C) Because we are constantly shedding epithelial cells, these ridges are changing daily. D) Identical twins do not have the same pattern of ridges.
Blood in the urine is called ____
a. hemodialysis b. hematuria c. oligouria d. pyuria
To focus on objects closer than 20 feet,
A. the lens must become flatter. B. the cornea must move inward. C. the retina must bend. D. the ciliary muscles must contract. E. the suspensory ligaments increase tension on the lens.
What is the large C-shaped mass of white matter that consists of nerve fibers that connect the two cerebral hemispheres?
A. corpus callosum B. infundibulum C. intermediate mass D. vermis E. gyrus