Flashcards
Everything else
Flashcards do conjunto (11)
- 1Role of proteins: Helicase (2)- Unwinds DNA double helix
- Breaks *hydrogen bonds* between complementary bases - 2Role of proteins: Single-stranded binding protein (2)- Stabilizes single-stranded DNA
- Allows DNA to be used as template for DNA replication - 3Role of proteins: RNA primase (2)- *Catalyses synthesis* of RNA primer on the DNA strand
- Allows DNA replication to take place at *origin of replication* - 4Role of proteins: DNA polymerase III (2)- Synthesizes DNA
- Forms strong phosphodiester bonds between the nucleotides to form the DNA - 5Difference between DNA and RNA: Sugar unit- Deoxyribose|Ribose
- 6Difference between DNA and RNA: Nitrogenous bases- Thymine present|Uracil in place of thymine
- 7Difference between DNA and RNA: Ratio of complementary nitrogenous bases- Ratio between A:T and C:G always 1:1|Ratio not always fixed between complementary bases
- 8Difference between DNA and RNA: Duration of existence- DNA is permanent molecule in nucleus|RNA is temporary molecule
- 9Difference between DNA and RNA: Purpose (1) + (2)- Stores genetic information|*Translates* genetic information into protein synthesis
- 10How does the DNA serve as a template for the synthesis of mRNA? (3)- Antisense strand used as a template
- mRNA formed by RNA polymerase by forming *phosphodiester bonds* between nucleotides with *nitrogenous bases complementary to those on the antisense strand* - 11Difference between mRNA : rRNA : tRNA Role: RNA sequence used to produce protein/molecule
: Translation process, using mRNA's codons and the assist of tRNA to produce a protein/polypeptide (forming *peptide bonds* between amino acids)
: Contains anticodon which *complementary base pairs* with codons on the mRNA
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- Year 4 Biology (Nucleic acids and proteins) FlashCards sobre Everything else, criado por Potato Milk em 27-04-2017.
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- Potato Milk
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