In a mouse, the axis that determines the body pattern from the nose to the tip of the tail is
A. dorso-ventral
B. antero-posterior
C. right-left
D. tip-tip
E. radial-medial
B. antero-posterior
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Which of the following would NOT be true of cDNA produced using horse liver tissue as a starting material?
A. it could be used to create a library of genes expressed in horse liver. B. it is produced from mRNA using reverse transcriptase. C. it contains genes from horse liver cells with both exons and introns. D. it is a copy of an mRNA expressed in horse liver cells. E. it can be sequenced using the dideoxy chain-termination method.
Although Watson and Crick are credited with the discovery of the structure of DNA, they based this
discovery on the bench work of many other scientists of the time. Name at least three different pieces of knowledge that Watson and Crick used in their discovery that was based on work from someone else.
What will be an ideal response?Intracellular preferences for actin filaments:
a. Is a way to look at the geography of the cell and the role of the nucleus b. Is a way to look at the geography of the cell and show where this role for actin filaments is important c. Explain how actin gets into the nucleus d. Explain how the Golgi apparatus forms
Water reabsorption into the capillaries associated
with a nephron is achieved principally by a. bulk flow. b. active transport and osmosis. c. countercurrent multiplication. d. phagocytosis. e. all of these.