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Post Test: Science G10 3Q Module 5

Quiz by Jerald U. Carilla

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10 questions
Show answers
  • Q1

    1. A mistake in nitrogen base pairing may occur without a known cause. But this spontaneous mutation allows cells to repair damaged DNAs. How can cells repair damaged DNAs?

    I. Nitrogen base removal

    II. Nucleotide removal

    III. Mismatch repair

    II and III

    I, II and III

     I and II

    I and III

    30s
  • Q2

    2. Which describe/s gene mutation?

    I. Deletes a segment of a chromosome without a centromere

    II. Changes structure and function of a protein

    III. Creates a different protein

    I and II

    II and III

    I and III

    I, II and III

    30s
  • Q3

    3. If the DNA strand AAA TCG AGG CCA is transcribed to an mRNA, which shows an occurrence of addition?

    AAA TCG AGC CA

    UUU AGC UCG GU

    UUU AGC UCA CGG U

    AAA TCG AGA GCC A

    30s
  • Q4

    4. Which pair about the types of mutation is incorrectly matched?

    Duplication: chromosomal

    Gamma: Ionizing Radiation

    UV radiation: Non-ionizing radiation

    Translocation: gene

    30s
  • Q5

    5. Why is nonsense mutation harmful to the organism?

    I. It shortens the amino acid sequence

    II. It changes the structure of the protein

    III. It changes the function of the protein produced

    II only

    I, II, and III

    I only

    Both I and II

    30s
  • Q6

    6. How does silent mutation affect protein production in the cell? Silent mutation _____

    shortens amino acid sequence

    changes the amino acid sequence

    changes the base sequence but similar protein.

    shortens the chromosomal strand

    30s
  • Q7

    7. Which chemical mutagen can remove an amino group in a nitrogen base?

    Base deaminators

    Base analogs

    Base altering chemicals

    Intercalating agents

    30s
  • Q8

    8. High energy radiation ejects the electrons in an atom causing free radicals. Which are examples of high-energy radiation?

    Gamma, X-rays and Ultraviolet

    Gamma and X-rays

    Ultraviolet and gamma

    Ultraviolet and X-rays

    30s
  • Q9

    9. How can bacteria cause mutation in their host?

    It causes inflammation, breakage, and damage to the DNA

    Both A and B.

    It inserts its DNA into the genome of the host.

    It changes location in a chromosomal DNA

    30s
  • Q10

    10. What is the correct arrangement of events on how pyrimidine dimers cause mutation?

    i. A covalent bond is formed between two pyrimidine bases

    ii. Adjacent pyrimidine bases absorb UV radiation

    iii. DNA strand with the dimer is not replicated

    iv. A kink in the DNA is formed due to pyrimidine dimer

    I, III, II, I

    III, II, I, IV

    I, II, III, IV

    II, I, IV III

    30s

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