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  1. Nov 2020
  2. bio.libretexts.org bio.libretexts.org
    1.2: Chromosomes and chromatin
    1
    1. dmkeith 05 Nov 2020
      Telomeres are repetitive sequences near the ends of linear chromosomes, and are important in maintaining the length of the chromosomes during replication, and protecting the ends of the chromosomes from alterations.

      Telomeres are very important when it comes to aging.

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    bio.libretexts.org/Courses/University_of_Arkansas_Little_Rock/BIOL3300_Genetics/01:_Chemistry_to_Chromosomes/1.02:_Chromosomes_and_chromatin
  3. May 2020
  4. chem.libretexts.org chem.libretexts.org
    2.2: Isotopes: Atomic Number and Atomic Mass Unit
    1
    1. dmkeith 28 May 2020
      What is the mass of As-74 in grams? B) What is the mass of the arsenic atom relative to the carbon-12 atom?

      Do you happen to have a video of this conversion?

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    chem.libretexts.org/Courses/University_of_Arkansas_Little_Rock/Chem_1402:_General_Chemistry_1_(Belford)/Text/2:_Atoms,_Molecules,_and_Ions/2.02:_Atomic_Number_and_Atomic_Mass_Unit