5 Written questions
5 Matching questions
- Okazaki fragment
- double helix
- semiconservative model
- a One of two prokaryotic domains, the other being Archaea.
- b The form of native DNA, referring to its two adjacent antiparallel polynucleotide strands wound around an imaginary axis into a spiral shape.
- c Type of DNA replication in which the replicated double helix consists of one old strand, derived from the old molecule, and one newly made strand.
- d The sugar component of DNA nucleotides, having one fewer hydroxyl group than ribose, the sugar component of RNA nucleotides.
- e A short segment of DNA synthesized away from the replication fork on a template strand during DNA replication, many of which are joined together to make up the lagging strand of newly synthesized DNA.
5 Multiple choice questions
- The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, chromatin exists in its dispersed form, as a mass of very long, thin fibers that are not visible with a light microscope.
- Site where the replication of a DNA molecule begins, consisting of a specific sequence of nucleotides.
- A virus that infects bacteria; also called a bacteriophage.
- An enzyme that catalyzes the lengthening of telomeres in eukaryotic germ cells.
- A small protein with a high proportion of positively charged amino acids that binds to the negatively charged DNA and plays a key role in chromatin structure.
5 True/False questions
Mismatch repair → One of two prokaryotic domains, the other being Archaea.
replication fork → Nucleotide sequences, usually noncoding, that are present in many copies in a eukaryotic genome. The repeated units may be short and arranged tandemly (in series) or long and dispersed in the genome.
bacteriophage → One of two prokaryotic domains, the other being Archaea.
pyrimidine → One of two types of nitrogenous bases found in nucleotides, characterized by a six-membered ring. Cytosine (C), thymine (T), and uracil (U) are pyrimidines.
nucleosome → An enzyme that cuts DNA or RNA, either removing one or a few bases or hydrolyzing the DNA or RNA completely into its component nucleotides.