Your botany instructor likes to tell nerdy jokes, like this: "I wanted to buy a pink Toyota Corolla, but the dealer only had a green Calyx available." Impress your instructor with a clever response to this joke.
A. "Me too! But I could only afford the yellow Androecium."
B. "Oh, I would have chosen the blue Receptacle."
C. "Those are great cars, but the pinecone tires don't roll very well."
D. "The factory must have run out of class A genes."
Answer: A
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Which of the following results in a spontaneous mutation?
A. free radicals produced by cellular metabolism B. exposure to ultraviolet light C. exposure to benzo (a)-pyrene, a chemical substance found in cigarette smoke D. exposure to ultraviolet light and benzo (a)-pyrene E. exposure to X-rays
A person will typically experience the sensation of ________ when fever is starting to occur in the body.
A. pain B. chills C. heat D. sweating
Glycophorin is a heavily glycosylated protein found on the red cell membrane. One or more of the statements in the following list may apply to this protein:
(i) It is a Type I membrane protein (ii) It is a Type II membrane protein (iii) It is a Type III membrane protein (iv) The carbohydrate composition of the protein gives the red cell a hydrophilic surface which allows them to circulate without 'sticking' to other cells or vessel walls. (v) The carbohydrate composition of the protein gives the red cell a hydrophobic surface which allows them to circulate without 'sticking' to other cells or vessel walls. (vi) The carbohydrate composition of the protein gives the red cell a surface which allows them to specifically 'stick' to the vessel walls so they can deliver oxygen to respiring tissues.
A ________ mutation does not change the amino acid sequence of a protein
A) nonsense B) deletion C) frameshift D) missense E) silent