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Quiz

DNA and RNA

Daniel Brand 13 perguntas 3.910 visualizações

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Perguntas do quiz (13)

  1. 1During which phase of the cell cycle does nuclear DNA replicate?
    1. AS phase
    2. BG1 phase
    3. CG2 phase
    4. DMitosis
  2. 2The first stage of DNA replication is [blank_start]unwinding[blank_end] of DNA, which is aided by the enzyme [blank_start]gyrase[blank_end]. Next, the two strands are [blank_start]unzipped[blank_end], thanks to an enzyme called DNA [blank_start]helicase[blank_end], which breaks the [blank_start]hydrogen[blank_end] bonds holding the bases together. Then, new strands of DNA are synthesised by an enzyme called [blank_start]DNA[blank_end] [blank_start]polymerase[blank_end]. In this stage, free nucleotides are joined to their complementary bases and each other by forming h[blank_start]ydrogen[blank_end] bonds and p[blank_start]hosphodiester[blank_end] bonds. They're added in the [blank_start]5[blank_end]' to [blank_start]3[blank_end]' direction.
    1. Aunwinding
    2. Bgyrase
    3. Cunzipped
    4. Dhelicase
    5. Ehydrogen
    6. FDNA
    7. Gpolymerase
    8. Hydrogen
    9. Ihosphodiester
    10. J5
    11. K3
  3. 3DNA replication is said to be s[blank_start]emi[blank_end] c[blank_start]onservative[blank_end].
    1. Aemi
    2. Bonservative
  4. 4Which of the following statements is true about mutations?
    1. AMutations arise when there's an error when matching complementary bases.
    2. BMutations occur when there's an evolutionary need for a new adaptation.
    3. CMutations are always harmful to the organism.
    4. DMutations can always be seen in the phenotype of the organism.
  5. 5The region of a molecule which is complementary to its substrate is called the [blank_start]active[blank_end] [blank_start]site[blank_end].
    1. Aactive
    2. Bsite
  6. 6The sequence of nucleotide bases in DNA dictates the primary structure of proteins.
    1. AVerdadeiro
    2. BFalso
  7. 7DNA is read three bases at a time, these are called [blank_start]triplets[blank_end].
    DNA is found in nearly all living organisms, so it is [blank_start]universal[blank_end].
    There are often several ways of coding for one amino acid, so DNA is [blank_start]degenerate[blank_end].
    DNA bases are read one after the other, so it is [blank_start]non-overlapping[blank_end].
    1. Atriplets
    2. Bamino acids
    3. CmRNA
    4. Dtrios
    5. Euniversal
    6. Fdegenerate
    7. Gnon-overlapping
    8. Hunique
    9. Idegenerate
    10. Joverlapping
    11. Kuniversal
    12. Lstored in nucleosomes
    13. Mnon-overlapping
    14. Ndegenerate
    15. Ocalled a codon
    16. Puniversal
  8. 8[blank_start]Transcription[blank_end] is the process of RNA being created according to a region of DNA (catalysed by [blank_start]RNA[blank_end] [blank_start]polymerase[blank_end]), whereas [blank_start]translation[blank_end] is the process of joining amino acids together according to the sequence of bases on a strand of RNA.
    1. ATranscription
    2. BRNA
    3. Cpolymerase
    4. Dtranslation
  9. 9RNA is double-stranded.
    1. AVerdadeiro
    2. BFalso
  10. 10rRNA stands for [blank_start]ribosomal[blank_end] RNA, while tRNA stands for [blank_start]transfer[blank_end] RNA. Both are formed in the [blank_start]nucleus[blank_end] and exit through nuclear [blank_start]pores[blank_end], but rRNA is s[blank_start]tructural[blank_end] and tRNA is f[blank_start]unctional[blank_end].
    1. Aribosomal
    2. Btransfer
    3. Cnucleus
    4. Dpores
    5. Etructural
    6. Functional

Informações

Descrição
Biology (Nucleotides and Nucleic Acids) Quiz sobre DNA and RNA, criado por Daniel Brand em 24-02-2017.
Idioma
English
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3.910
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