For the hierarchy of skeletal muscle organization, which accurately lists the order of structures from "small" to "big"?
A. sarcomere, myofibril, muscle fiber, motor unit
B. myofibril, muscle fiber, sarcomere, motor unit
C. motor unit, myofibril, muscle fiber, sarcomere
D. motor unit, sarcomere, muscle fiber, myofibril
E. None of the choices are correct.
A. sarcomere, myofibril, muscle fiber, motor unit
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Three scientists are using different forms of PCR for their research. Abby wants to determine changes in gene expression levels in a tissue, so she uses ______. Bob is trying to extract genetic information from a wooly mammoth fossil, so he uses ______. Chris needs to express a gene in bacteria that matches the form expressed in kidney cells, so she uses ______.
A. Quantitative RT-PCR; PCR; RT-PCR B. PCR; quantitative RT-PCR; RT-PCR C. RT-PCR; PCR; quantitative RT-PCR D. RT-PCR; quantitative RT-PCR; PCR E. Quantitative RT-PCR; RT-PCR; PCR 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 PCR techniques? 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 PABP bound to the poly(A) tail and eIF4E bound at the 5' UTR interact through their binding to:
A. the 40S ribosomal subunit. B. eIF4G. C. the initiating tRNA. D. eIF3.
________ uses the unique banding patterns of a chromosome to determine the general location of a gene
A. Physical mapping B. Cytogenetic mapping C. Linkage mapping
Molting is necessary for:
A) all animals. B) only animals with endoskeletons and scaly skin. C) all animals with exoskeletons. D) all animals with skeletons. E) all animals with endoskeletons.