The most specific term usually used to describe a substance in a biological system that increases the rate of a reaction without being permanently changed by the reaction is a(n)
A. catalyzer.
B. rate increaser.
C. catalyst.
D. enzyme.
Answer: D
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a. Temperature and pH b. Temperature and solute concentration c. Solute concentration and nutrient levels d. Solute concentration and pH e. Temperature and nutrient levels
At the emergency room, the doctor tell you "Your friend has high levels of troponin in the blood." What is this likely to indicate?
A. A broken bone B. A high level of fitness C. An unhealthy diet D. Muscle damage
The solar system is about how many years old?
a. about 12 billion b. about 4.6 billion c. 750 million d. 400 million e. 200 million
Which type of bond makes water liquid?
a. ionic b. covalent c. polar covalent d. nonpolar covalent e. hydrogen