Microbiology chapter 9
Which of the following statements about tRNA is TRUE?
No tRNA can recognize a stop codon
Viruses that lead to the transformation of the host cell into a cancer cell or described as being blank
Oncogenic
A(n)_____ is a section of prokaryotic DNA that contains one or more genes along with a corresponding operator to control transcription
Operon
Extra pieces of DNA found in bacteria are called _________.
Plasmids
Which of following best describes translation?
RNA > protein
Which of the following combinations are correctly matched
70S-ribosome
Transcription is characterized by
A messenger RNA molecule synthesized from the DNA molecule in the nucleus
Translation is terminated when a stop codon is present at the
A site
Which of the following is a characteristic of double-stranded DNA
All of these choices are correct. 2 nanometers in width, 10 base pairs per turn, and 0.34 nanometers per base pair.
Which of the following is required to replicate the lagging strand of DNA?
All of these choices are correct. Okazaki fragments, primase, and DNA ligase.
In eukaryotic cells, what cellular structure is composed of a neatly packaged DNA molecule?
Chromosome
Which of the following best describes transcription
DNA > RNA
The ________ is the sum total of genetic material in a cell
Genome
The enzyme that unwinds a segment of the DNA molecule is
Helicase
When one bacterium donates DNA to another bacterium, a type of genetic recombination known as _________ has occurred
Horizontal gene transfer
DNA replication is said to be
Semi-conservative
Translation is characterized by
The blueprint of the RNA molecule used to bind amino acids together to form proteins
The acceptance by a bacterial cell of small DNA fragments from the surrounding environment is termed _______
Transformation
True or False. After DNA replication two identical DNA molecules are formed
True
Which of the following is not a nitrogen base found in DNA?
Uracil
Nucleotides are the building blocks of
both DNA and RNA
