An Unusual Stretch of Repeated Sequences at the Tips of a DNA

question 16

Multiple Choice

An unusual stretch of repeated sequences at the tips of a DNA molecule forming a cap at each end of the chromosome is called a ________.

• A)telomere
• B)chromomere
• C)centromere
• D)telophase
• E)karyomere

Recognize the implications of viral and bacterial interactions with hosts, including disease mechanisms and resistance strategies.

Comprehend the evolutionary relationships and adaptations of organisms based on genetic and genomic analyses.

Understand the ecological roles and significance of different microbial groups, especially methanogens, in global dynamics such as the methane cycle and greenhouse effect.

Discriminate between various nutritional strategies among microorganisms, including photoautotrophy, chemoautotrophy, and chemoheterotrophy.

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Definitions:

Hershey and Chase

Scientists who conducted experiments in 1952 proving that DNA, not protein, is the genetic material in bacteriophages.

Polynucleotide Strand

A sequence of nucleotides that forms part of a nucleic acid molecule.

Template Strand

The strand of DNA that serves as the guide for the synthesis of messenger RNA during transcription.

Telomeres

The caps at the end of each strand of DNA that protect chromosomes from deterioration or from fusion with neighboring chromosomes.