Which of the following represents a real difference between viruses and viroids?
Which of the following represents a difference between viruses and viroids? Viruses have capsids composed of protein, whereas viroids have no capsids.
How could you treat dead smooth bacteria with these enzymes to determine whether DNA RNA or protein is the genetic material?
How could you treat dead smooth bacteria with these enzymes to determine DNA, RNA, or protein iw the genetic material? They improved the experiment by adding enzymes to the heat-killed S strain before mixing it with the live R strain.
Which of the following characteristics structures or process is common to both bacteria and viruses?
Which of the following characteristics, structures, or processes is common to both bacteria and viruses? Genetic material composed of nucleic acid.
How do prions differ from viruses select all that apply?
How do prions differ from viruses? Unlike a virus, a prion is a single molecule. Unlike viruses, prions are infectious proteins. Unlike viruses, prions do not include any nucleic acids.
How could you treat dead smooth bacteria in order to determine whether DNA RNA or protein is the transforming factor?
How would you treat dead smooth bacteria with these enzymes to determine whether DNA, RNA or proteins are the material that was passed on to the rough bacteria to make them pathogenic? You could take Proteases and mix the heat-killed smooth strain with it, breaking down all the proteins in the strain.
How could you test whether the transforming ability of a cell extract was due to DNA or RNA?
How could you test whether the transforming ability of a cell extract was due to DNA or RNA? You could treat the extract with a DNase or RNase enzyme and test whether its transforming ability was intact. One of the strands in a DNA double helix has the nucleotide sequence 5'-ACCTGCTACGG-3'.
Which of the following facts did Hershey and Chase make use of in trying to determine whether DNA or protein is the genetic material?
In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts? Answer: DNA contains phosphorus, whereas protein does not.
Which of the following human diseases is caused by a virus that requires reverse transcriptase to transcribe its genome inside the host cell?
Reverse transcriptase is central to the infectious nature of retroviruses, several of which cause disease in humans, including human immunodeficiency virus (HIV), which causes acquired immunodeficiency syndrome (AIDS), and human T-cell lymphotrophic virus I (HTLV-I), which causes leukemia.
What determines whether two proteins will bind to each other?
They will bind to each other if they have complementary shapes and chemical properties. A protein's specific structure determines how it works, and in almost every case, the function of a protein depends on its ability to recognize and bind to some other molecule.
What is the difference between viroids and prions quizlet?
Prions are infectious proteins that cause a number of neurological diseases and a virion is another name for a complete virus. Where do RNA viruses multiply? in the cytoplasm. Viruses that contain RNA are called virions and those with DNA are called viroids.
How does a prion differ from a virus?
How is a Prion Disease different from Viral and Bacterial Diseases? – Viruses and bacteria are microorganisms that contain genetic material. They do not generate spontaneously. In contrast, Prion Disease is caused by a change in shape of a cellular protein.
How do prions which are misfolded proteins infect organisms?
These misfolded proteins do not multiply in the host organism that they infect. Instead, they affect the brain structure by acting as a template, inducing proteins with normal folding to convert to the abnormal prion form.
Which type of genome is more similar to the genome of the host cell than to the genomes of viruses?
E) Viral genomes are usually more similar to the genome of the host cell than to the genomes of viruses that infect other cell types.
How long does a virus host relationship last?
E) The virus-host relationship usually lasts for generations.
Do viruses contain DNA?
A) Viruses contain either DNA or RNA.
Which genome replicates along with the host genome?
C) The phage genome replicates along with the host genome.
Is zoonosis a virus?
However, a zoonosis is a disease that is transmitted from other vertebrates to humans, at least sporadically, without requiring viral mutation.
How many genes are in a viral genome?
2) Viral genomes vary greatly in size and may include from four genes to several hundred genes. Which of the following viral features is most apt to correlate with the size of the genome?
Can plants develop TMV?
A) The plants would develop some but not all of the symptoms of the TMV infection.