The yeast Saccharomyces cerevisiae produces haploid cells of two mating types, a and ?, which are morphologically similar. Cells of opposite mating types can mate. Saccharomyces cerevisiae is a(n) ___________ species
A. isogamous
B. heterogamous
C. prokaryotic
D. asexual
A
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Glycolysis is a metabolic process that is done by all cells. However, not all cells make use of another metabolic process called the Krebs cycle. What does this tell you about the evolution of these processes?
A. As a metabolic process, glycolysis likely evolved prior to the Krebs cycle B. As a metabolic process, the Krebs cycle likely evolved prior to glycolysis C. Both the Krebs cycle and glycolysis likely evolved at the same time Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about evolution and time? What other information is related to the question? Choose Answer Do you have all necessary information to determine the relative importance of glycolysis and the Kreb’s cycle? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Regardless of the electron or hydrogen acceptor used, one of the products of fermentation is always
A. ADP. B. ATP. C. NAD+. D. pyruvate. E. alcohol.
What were the short-term responses of each population during the first 20 years following the removal of the mice? a. Deer mice remained absent from the community and there was no apparent impact on thesize of all other populations
b. deer mice began to re-establish in the community. c. Mesquite rose to a level that dominated the community, but there was no apparent impact onthe size of all other populations. d. None of the above.
A major function of tight junctions is to
a. create strong cell-cell adherence. b. promote the intermixing of proteins between the apical and basolateral surfaces of cells. c. seal the space between adjacent cells to provide, for example, a barrier to sugar diffusion across an epithelial cell layer. d. sort cells on the basis of adhesion during cell migration in embryos.