Specialized molecules called _____ that help pull the new blood vessel forward during the process of angiogenesis
a. Cadherins
b. Intergrins
c. Proteases
D. MMPs
Ans: b. Intergrins
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The process in which mutations are removed and the correct bases added is called ________.
A. transduction B. transformation C. excision repair D. frameshift E. back-mutation
How can a mutation in a tumor-suppressor gene behave as a recessive allele at the cellular level, but appear as a dominant allele in pedigree analysis?
A) Some functional protein can still be produced in a cell heterozygous for a loss-of-function allele; however, an additional mutation can inactivate the second allele, eliminating all functional protein allowing cancer to occur in many family members. B) A single functional allele is sufficient to regulate the cell cycle, but not sufficient to promote apoptosis, allowing cancer to develop in every generation. C) A cell with half the amount of the functional tumor-suppressor protein can form benign tumors that will occur in every generation in the pedigree. D) Some functional protein can still be produced in a cell heterozygous for a loss-of-function allele; but loss-of-function tumor-suppressor alleles are so common in the population that many individuals are homozygous.
structure that connects pharynx to the stomach
What will be an ideal response?
The genome of influenza virus is
A. multiple pieces of linear dsDNA. B. a single circular ssRNA. C. a single linear dsRNA. D. a single circular ssDNA. E. multiple pieces of linear ssRNA.