Chapter 13, Problem 3CT

Figure 17.5 Which of the following statements about virus structure is true? a. All viruses are encased in a viral membrane. b. The capsomere is made up of small protein subunits called capsids. c. DNA is the genetic material in all viruses. d. Glycoproteins help the virus attach to the host cell.

Viruses with reverse transcriptase enzyme can make a DNA copy out of its RNA genome.  What        implications can this capability do in health hazards?

All virus particles, in their infectious form, contain which of the following components? Choose all that apply. Group of answer choices Ribosomes Mitochondria Nuclei Cell membranes Nucleic acids encoding genes Protein capsids

What did experiments using porcelain filters prove? Select all answers that apply.    Porcelain filters retain both bacteria and viruses            Viruses are actually solutions of genetic material, which is why they were named “viruses” after the Latin for liquid poison            Viruses are smaller in size than bacteria            Viruses replicate in broth

The spike proteins of a coronavirus are one half of the Velcro mentioned in the video, and the other half of the Velcro consists of molecules on the surface of human cells. What happens after coronavirus spike proteins bind to molecules on the surface of a human cell?

Different types of viruses have different types of genomes- some are double-stranded DNA, some are single-stranded DNA, some are double-stranded RNA, and some are single-stranded RNA.  The Ebola virus genome is a piece of single-stranded RNA.  Given this piece of information, do you expect it to see %Adenine = %Uracil and the %Guanine = %Cytosine?  Why or why not?

Why are viruses are not regarded as true living cells?

How much smaller is a virus than a bacterial cell? Than an animal or a plant cell?

Which of the following statements is not true?        Select one: a. Viruses multiply inside living cells using viral - mRNA, tRNA & ribosomes. b. Viruses multiply inside living cells. c. Viruses contain DNA or RNA. d. The nucleic acid of a virus is surrounded by a protein coat. e. Viruses cause the synthesis of specialized infectious elements.