Discuss why energy yield in an organism undergoing anaerobic respiration is less than that of an organism undergoing aerobic respiration
What will be an ideal response?
Answer: One possible explanation could point to the substrate-level phosphorylation process itself as being less energy yielding than (aerobic) oxidative phosphorylation. Another reason is the fate of pyruvate itself, where fermentation is unable to take it through the higher energy yielding process, which requires O2 as a terminal electron acceptor. Other answers could discuss the E0' being greatest with the O2/H2O redox couple in aerobic metabolism compared to anaerobic redox couples.
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Non-disjunction is the failure of homologous chromosomes to separate during meiosis I, or the failure of sister chromatids to separate during meiosis II or mitosis. As a result, both homologous chromosomes or both sister chromatids migrate to the same pole of the cell. This produces daughter cells with an imbalance of chromosomes. If 18 pairs of sister chromatids segregate normally during meiosis II in cats (n=19) but we have non-disjunction of 1 pair, then at the end of meiosis II we will have
A. 3 cells with 20 chromosomes and 1 cell with 18. B. 2 cells with 20 chromosomes and 2 cells with 18. C. 2 cells with 19 chromosomes, 1 with 20, and 1 with 18. D. 3 cells with 18 chromosomes and 1 cell with 20. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about non-disjunction? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? 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?
Water's pH is considered neutral when:
a. hydrogen can be bound. b. hydrogen can be released. c. water is slightly alkaline. d. hydrogen and hydroxide ions are equal in number.
Only feces from humans that contaminates food and water can be involved in transmission of amoebiasis.
Answer the following statement true (T) or false (F)
The first organism produced as a transgenic organism was
A. a virus. B. corn. C. bread yeast. D. Dolly, the cloned sheep. E. a bacterium.