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

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

structure that connects pharynx to the stomach

What will be an ideal response?

Biology & Microbiology

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.

Biology & Microbiology