Which one of the following structures in the moss life cycle is not haploid?
A. germinating spore
B. antheridium
C. sperm
D. spore mother cell
E. rhizoid tissue
D. spore mother cell
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You are studying an enzyme-catalyzed reaction that induces a particular cellular activity in the lab. If you wanted to slow down that particular cellular activity by controlling the enzyme, what could you do?
A. Decrease the temperature of the incubator where the cells are growing B. Increase the pH of the media the cells are growing in to the optimum pH C. Add cofactors to the media the cells are growing in D. Add an allosteric activator to the cells
You look under a microscope and notice a cell has replicated its chromosomes. What stage of the cell cycle would the cell enter next?
a. G1 b. S c. G2 d. interphase
Which condition does not involve a defect in an enzyme pathway?
A) Alkaptonuria B) Albinism C) Sickle cell anemia D) Phenylketonuria (PKU)
In the study of cultural evolution, what is a "meme"?
A. A unit of cultural inheritance B. A humorous piece of media that is rapidly spread on the internet C. Early attempts at music and art by human ancestors D. Information spread as a disease rather than as inheritance of a gene E. Genetic memory that we have inherited from our ancestors and use without realizing it