Post Test: Science G10 3Q Module 5
Quiz by Jerald U. Carilla
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- 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