Most broad-spectrum antibiotics act by
A) inhibiting the synthesis of the cell wall.
B) inhibiting protein synthesis.
C) inhibiting nucleic acid synthesis.
D) inhibiting metabolic pathways.
E) disrupting the cytoplasmic membrane.
B
You might also like to view...
Greenhouse gases
A) such as CO2, CH4, and N2O trap infrared radiation and heat the Earth. B) such as CO2 increase plant and animal growth, resulting in more heat production on Earth. C) such as CO2 and O3 (ozone) interact with UV light and heat the Earth. D) such as CO2, CH4, and N2O destroy O3 (ozone) and allow more UV light to enter the atmosphere, thus increasing the temperature of the Earth's surface.
A soft drink manufacturer, notorious for making marketing claims that are deceptive but technically accurate, has released a new sports beverage. The advertisements for this beverage assert that it contains anabolic molecules that provide energy and is 100% legal to produce and consume. You buy a bottle of this beverage for testing and discover that it contains little more than water, disaccharides such as sucrose and maltose, citric acid, and other fairly common fruit flavoring agents. Have you finally caught the company in a lie?
a. Yes! This beverage does not contain any anabolic ingredients despite these claims. b. Yes! Anabolic steroids are illegal in the United States regardless of how they are consumed. c. No; disaccharides are created through anabolic pathways and are perfectly legal. d. No; anabolic molecules denature in the presence of citric acid, becoming legally inert.
Peter Mitchell demonstrated ATP production by aerobic bacteria by placing the bacteria in:
a. an acidic environment. b. a basic environment. c. an aqueous environment. d. a buffered environment. e. a nonpolar environment
The number of proteins in humans
A) is approximately equal to the number of genes. B) is less than half the number of genes. C) is much greater than the number of genes.