All ________ consist of a thiazolidine ring, a beta-lactam ring, and an R group.
A. penicillins
B. aminoglycosides
C. cephalosporins
D. macrolides
E. tetracyclines
Answer: A
You might also like to view...
After a meal, ectotherms often situate themselves in a warm and or sunny spot. This can be critical to the health of the animal. Why is this process important?
A. The digestive process is enzyme catalyzed and regulated within the body. This behavior has nothing to do with digestion. B. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can increase the rate of enzyme-driven reactions 2-3 times the original rate. C. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can increase the rate of enzyme-driven reactions 10 times the original rate. D. The digestive process is enzyme catalyzed. An increase of 10 degrees Celsius can decrease the rate of enzyme-driven reactions, which provides more time for greater nutrient absorption.
Plant species in California's Santa Rosa Mountains are seen to be
A) moving southward. B) growing larger in size. C) moving to higher elevation. D) unaffected by climate change.
The centrosomes move away from each other and the nuclear envelope breaks up during which phase of mitosis?
A. Interphase. B. Telophase. C. Metaphase. D. Anaphase. E. Prophase
A man reports to his doctor that he is tired all the time and his urine has become darker in color. He has not experienced fever or vomiting recently. The physician notes that his eyes are yellowish and his abdomen is swollen and tender. The man has a
history of kidney transplant. The man may be infected with A) hepatitis A virus. B) hepatitis C virus. C) norovirus. D) Shigella. E) Entamoeba histolytica.