The mosquito is a

Q: A virologist develops a drug that specifically targets step 5 of the reproductive cycle of an…

A: The viral life cycle consists of six  stages such as -   (i) Attachment  (ii) Penetration  (iii)…

Q: Where did the MRSA pathogen likely originate? a. from the artifi cial valve itself c. from the…

A: Methicillin-resistant Staphylococcus aureus (MRSA) is a pathogenic infection caused by one of the…

Q: The West Nile virus has what mode of transmission? a) Propagative b) Cyclo-propagative c)…

A: Answer- propagative

Q: Which virus is used in smallpox vaccination? a. variola c. cowpox b. vaccinia d. varicella

A: Introduction: The virus is defined as a microorganism that is smaller in size compared to a…

Q: Which disease has an environmental reservoir (i.e., soil, water)? A) O pneumonia B) O rabies C) O…

A: Natural reservoirs are a specific population or environment of the organism that act as reservoirs…

Q: The virus that causes COVID 19 has characteristics of both the common cold and the virus that causes…

A: COVID-19 is caused by infection with the severe acute respiratory syndrome coronavirus 2…

Q: What is a virus pandemic? a) A sharp and rapid epidemic involving more than one country b) An…

A: The influence of virus and its infection depends on the geographical areas on which it spreads, food…

Q: All of the following are true of Lyme disease excepta) it is caused by a spirochete.b) it is…

A: Answer: Introduction: Lyme disease is occurring due to infection done by a spirochete Borrelia…

Q: The malarial form infectious for mosquitoes is called aa) gametocyte.    b) trophozoite.…

A: Malaria is an infective disease that is caused by the Plasmodium parasite and is transmitted by…

Q: A. Define the term pathogen. B. Using MRSA, NOROVIRUS, ATHLETES FOOT and MALARIA as examples,…

A: A. Define the term pathogen. B. Using MRSA, NOROVIRUS, ATHLETES FOOT and MALARIA as examples,…

Q: Select the letter of the choice that best completes the statement. Using clean linens and equipment…

A: The entry of any pathogen or microbe into the body and start affecting the normal metabolism of the…

Q: While H5N2 is of great concern economically, it is not considered animminent threat to human health.…

A: Viruses are microscopic agents that can replicate only inside the host cells. They can infect all…

Q: Viruses that cause serious diseases in infants are ........... and ............. a. mumps,…

A: A virus is a very small submicroscopic agent that is known for causing infections in its host…

Q: Clear patches in cell cultures that indicate sites of virus infection are called a. plaques. b.…

A: Viruses are those microorganisms and they can live inside the host cells or other living things.…

Q: Choose the combination of answers that most accurately completes the statement.A/an…

A: Correct answer is Asymptomatic carrier.

Q: Other than spreading malaria, anopheles mosquitoes are also vectors of: A. dengue fever B.…

A: Anopheles is a mosquito genus which was first described and named by J. W. Meigen, in the year 1818.…

Q: An infection peculiar to swine causes ____________ when transmitted tohumans.a. anthrax b.…

A: Infectious diseases are caused by microbes or pathogens.

Q: Which of the following are hosts of West Nile virus which are also responsible for infecting…

A: West Nile Virus: It is an ssRNA virus from the flavivirus genus of the Flaviviridae family. This…

Q: a cytokint storm is an overproduction of immune cells and their activating compounds- cytokines can…

A: Cytokine storm or hypercytokinemia is the physiological response of an animal's innate immunity…

Q: The virus transmits best in  A.enclosed spaces and sunny weather  b.encolsed spaces and cold/dry…

A: Viruses are infectious particles having a genetic material and are surrounded by a protein capsid.…

Q: Which of the following is a reason that scientists do not classify viruses as living things? A.…

A: Qusstion - Which of the following is a reason that scientists do not classify viruses as living…

Q: A seasonal outbreak of influenza would be an example of what type of outbreak? a. point-source b.…

A: Outbreak is a term used in epidemiology to describe a sudden surge in disease incidences in a…

Q: A/an __________ is a passive animal transporter of pathogens.a. zoonosis b. biological vector c.…

A: A vector is a living animal that transmits an infectious agent from one host to another. The vector…

Q: Virus causes?       A. Tetanus B. Common cold C. NOTA D.Malaria E. AOTA

A: virus are obligate parasite  that can replicate only when present  in the host.

Q: The primary site of attack in influenza is thea. small intestine b. respiratory epithelium c. skin…

A: Influenza or flu is a highly contagious viral infection of the lungs and the respiratory passages.…

Q: End point dilution is the viral dilution point where the amount of virus would be lethal to  a. only…

A: Before the plaque test, the end-point dilution assay was utilized to determine the viral titer.

Q: A virus with an envelope is most likely  A. an animal virus  B. better able to hide from the hosts…

A: when virus infect a cell , it penetrate the cell membrane and reaches the nucleus . after its life…

Q: a.Explaination of  how a bacteria  must be present in all the cases of a disease.

A: Hi! As you have posted multiple questions, I will be answering the first question for you. If you…

Q: Which of the following diseases is NOT controlled by a mosquito control program? Group of answer…

A: Infectious diseases are diseases that can be transmitted from one person to another. Infectious…

Q: Why can’t drugs used to treat influenza, like neuraminidase inhibitors, be used to treat a wider…

A: Influenza is a viral infection, also known as flu. It is caused by influenza virus.   Symptoms :…

Q: The types of host species a particular virus can infect are referred to as its (a) assembly (b)…

A: Viruses are simple, noncellular infectious microorganisms with DNA or RNA surrounded by the coat…

Q: Polio and hepatitis A viruses are ___________ viruses.a. arbo b. enteric c. cold d. syncytial

A: The virus is microscopic and is even smaller than bacteria. they remain inactive or in the form of…

Q: HIV can only infect T-helper cells because their protein spikes only recognize those cells. This is…

A: HIV is a virus which causes AIDS. The HIV virus attacks helper T cells which is also called CD4 T…

Q: Which of the diseases below is associated with longevity ? A) Tuberculosis B) Cholera C) Malaria D)…

A: Longevity is a term used for long duration or for a long duration of life, something that will exist…

Q: In Europe, for several centuries, measles has been a childhood infection that rarely kills. When…

A: Europeans brought several deadly diseases to New World (United States, Chile, South Africa, New…

Q: acteriophage is a (A) Fungus (B) Bacteria (C) Virus (D) Protozoa

A: Bacteriophages are composed of proteins that encapsulate a deoxyribonucleic acid or ribonucleic acid…

Q: Enveloped viruses carry surface receptors calleda. buds b. spikes c. fibers d. sheaths

A: Viruses are microscopic agents that can replicate only inside host cells. They can infect all types…

Q: The disease from the list below which has a bacterial etiology is: A. Strep throat B. Asthma C.…

A: 1. Strep throat is causes by a group A Streptococci, which is a gram positive bacteria.  2. Asthma-…

Q: An enveloped virus has a __________ time hiding from the host human immune system and is _________…

A: The viruses are sub-cellular organisms. They are obligate parasites i.e. they use the host machinery…

Q: The envelope of enveloped -viruses : a. Determines the viral morphology b. Both choices are false c…

A: Envelope is the outermost layer of the viruses made up of phospholipids derived from the host cells…

Q: The epidemic that infected Europe, North Africa, and theMiddle East and killed tens of millions of…

A: Introduction An epidemic is a sudden increase in the number of instances of a disease beyond what…

Q: The occurrence of Lyme disease mainly in areas where certainspecies of ticks live would define it as…

A: Ticks can be defined as the parasitic arachnids that mostly range from 3 to 5 mm long, part of the…

Q: To cause a human pandemic, the H5N1 avian flu virus wouldhave to(A) spread to primates such as…

A: Avian flu virus is the influenza virus that causes infections in humans. The acute respiratory…

Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.