The African swine fever virus has two membrane bilayers around the outside of the virus. The outer layer is from the host cell that the virus infects—it takes part of the host membrane with it as it leaves the cell. This membrane then fuses with the next cell the virus infects, and it is known that cholesterol is required in the membrane of the cell being infected in order for the virus to successfully infect the cell. Which of the following is the best explanation for why cholesterol would be required in the membrane of the cell the virus is infecting?  Explain your choice in 25 words or less. Viral proteins may not have the correct conformation if the host membrane is less fluid due to lower cholesterol levels The cholesterol forms a channel through the membrane that allows the virus to enter the cell, and without cholesterol the virus cannot enter the cell The cholesterol disrupts a small portion of the hydrophobic core of the membrane to allow the virus to enter the cell, and without cholesterol the virus cannot enter the cell None of the above answers is a good explanation for why cholesterol is required in the membrane of the infected cell

You are sneaky and would like to  avoid the deadly grip of phagocytes. Your  sweet tooth should help you. a. What is the structure being described? b. What is the chemical composition of this structure? c. What is the function of the structure, and how does it benefit the bacteria?

Many viruses can stop the host cell from translating host mRNAs.  Compare the way coronaviruses do this to how influenza viruses do this.

One of your patients, a six-year-old girl who suffers from Sickle cell anemia, an inherited blood disorder in which red blood cells are abnormally shaped and fragile, leading to a short supply of red blood cells.  These abnormal cells can also get stuck in small vessels, which prevent blood flow, leading to fatigue, pain, and other severe complications. Patients with sickle cell anemia produce defective beta-globin due to a point mutation that causes the change of a single amino acid residue. This is an example of what type of mutation? nonsense mutation   missense mutation   frameshift mutation   deletion mutation

microbiology question Which of the following statements is true regarding bacteriophages and eukaryotic viruses?   A. Both may enter a host cell by endocytosis.   B. Both involve entry of the entire virus particle into the host cell.   C. Both can have segmented genetic material.   D. Bacteriophages leave the capsid outside of the cell that they infect, while eukaryotic virus infections involve the entry of the capsid with the nucleic acid.

Failure to add the 3’ polyA tail will result in which of the following? The prokaryotic mRNA cannot be translated A break in the 5’-5’ triphosphate bond The eukaryotic mRNA is not transported outside the nucleus No changes, the polyA tail is not necessary

You are working on a Coronavirus project in a lab. Your supervisor wants you to investigate the specificity of an antibody and a protein on the surface of a virus. You found that virus and antibody has complementary shapes. What kind of possible force of attraction between the virus and the antibody could it be? Ionic bond   Covalent bond   van der Waals forces   Hydrogen bonds

You know how the body using mRNA to create protein. Describe to someone how the cell will be able to use a mRNA from a vaccine.

Eukaryotic mRNA is synthesized by which of the following?   Question 25 options:   RNA POL I   RNA POL II   RNA POL III   RNA POL IV   Any of the above

The peptidyl transferase reaction is an exemplification that the ribosome is a ribozyme. True False