The pH indicator used in a methyl red test is
A. Neutral red
B. Phenol red
C. Methyl red
D. None, this is a trick question
Ans: C. Methyl red
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A cell biologist examines a leaf cell from an alfalfa plant during metaphase of mitosis and determines that 32 chromatids are present. The role of fertilization in this species is to (Check all that apply)
_____ Produce a new cell that has a combination of chromosomes from 2 different parents. _____ Increase the number of chromosomes per cell from 16 to 32. _____ Increase the number of chromosomes per cell from 8 to 16. _____ Combine the chromosomes from 2 haploid cells into a single diploid cell. 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 fertilization? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
The negatively charged phosphates of ATP influence one another by
A) relative hydration. B) charge repulsion. C) resonance hybridization. D) dehydrogenation. E) all of the above
What is chemical digestion?
A. The use of physical actions to break down food B. The absorption of food in the small intestine C. The use of villi to break down food D. The breakdown of food by enzymes
What are the members of a pair of nonsex chromosomes?
A) alleles B) diploids C) gametes D) homologous chromosomes