Intermediate filaments

a. are typically 6 nm in diameter.                  

b. are essential for cell motility.

c. may be used to diagnose the tissue of origin for many cancers.

d. are composed of globular subunits.                       

e. are formed from tetrameric subunits.

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#Question id: 3787

#Section 3: Genetics, Cellular and Molecular Biology

A biochemist isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. When she adds some DNA to the mixture, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture?

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#Question id: 3767

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following characteristics would you expect of a eukaryotic organism that lacks the enzyme telomerase?

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#Question id: 10186

#Section 2: General Biology

Arrange the subatomic particle in order of increasing mass

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#Question id: 27238

#Section 3: Genetics, Cellular and Molecular Biology

Name the RNA molecules which is used to carry genetic information copied from DNA?

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#Question id: 1979

#Section 2: General Biology

An immunoglobulin (Ig) molecule, of whatever class, has regions symbolized as C or V, H or L. A light chain has which of these regions?