Which of the following is a trace element in the human body?
A) nitrogen
B) zinc
C) oxygen
D) hydrogen
Answer: B
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A fly embryo that expresses the bicoid mutant phenotype
A. is genetically wild-type, but has a bicoid mutant mother. B. is mutant for bicoid and has a bicoid mutant mother. C. may be either genetically wild-type or mutant for bicoid, but definitely has a bicoid mutant mother. D. can be either genetically wild-type or mutant for bicoid. The genotype of the mother cannot be determined from the information provided. 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 already know about maternal genes? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
A scientist uses recombinant technology to take a eukaryotic promoter and place it in front of a bacterial structural gene. What is the most likely outcome on bacterial gene expression?
A. Bacterial gene expression will increase because both prokaryotic and eukaryotic genes are based on the same four nucleotides. B. Bacterial gene expression will not occur because RNA polymerase enzymes between prokaryotes and eukaryotes are incompatible. C. Bacterial gene expression will increase because eukaryotic RNA polymerase has analogous function to prokaryotic RNA polymerase. D. Bacterial gene expression will decrease because prokaryotic RNA polymerase can read the same sequences as eukaryotic RNA polymerase.
Quaking aspen reproduces by seeds and
a. runners. b. corms. c. bulbs. d. tubers. e. root suckers.
Most osmophiles are prokaryotes.
A) True B) False