Activation energy
A) is the minimum amount of energy needed to get a reaction started.
B) is the minimum amount of energy needed to get a reaction started and is due to the necessity of collisions between reactants which have enough energy and with the reactants properly oriented.
C) is due to the necessity of collisions between reactants which have enough energy and with the reactants properly oriented.
D) is the minimum amount of energy needed to get a reaction started and is due to the necessity of collisions between reactants which have enough energy and with the reactants properly oriented and can be lowered by catalysts such as enzymes in biochemical reactions.
E) can be lowered by catalysts such as enzymes in biochemical reactions.
Answer: D
You might also like to view...
Biologists around the world spend a great deal of time studying the cytoskeleton of cells
Some of the tools they use in their research include chemicals that interfere with the structure of the cytoskeletal elements or with the activities of the motor proteins that associate with the cytoskeleton to facilitate movement. For example, a family of compounds called cytochalasins disrupts the normal assembly and disassembly of microfilaments. Another compound called colchicine binds to tubulin and prevents the assembly of microtubules. The function of dynein is prevented by a compound known as EHNA (erythro-9-[3-2- (hydroxynonyl)] adenine), and blebbistatin inhibits the activity of myosin. Use this information to answer the following questions. Based on this information, where would you predict blebbistatin to have the greatest effect? A. sperm cell motility B. leading edge formation of a migrating fibroblast C. the contraction at the trailing edge of a fibroblast D. Blebbistatin would likely have no effect on any of these examples of cell movement.
Soft-shelled turtles can remain submerged underwater for several hours without ventilating their lungs because ______.
A. they can use cutaneous respiration through the soft lining of their throats B. the partial pressure of O2 is higher underwater C. they can store some air in special air sacs under the shell D. they also have rudimentary gills
The senses of equilibrium and balance derive from the
A. cochlea. B. semicircular canals. C. vestibule. D. cochlea and vestibule. E. semicircular canals and vestibule.
In some species of herbivorous mammals, hindgut fermentation occurs in the
A) rumen. B) reticulum. C) colon. D) caecum.