Eyes - Respiratory tract Digestive tract - Broken skin Genitourinary tract FIGURE 19.4 Portals of Exit or Entry A portal of exit is the route by which an infectious agent leaves the host. Some pathogens can only cause disease when they enter a host through a specific portal of entry.

Q: Keeping your food covered, especially outdoors, when it is not actually being eaten is a way to…

A: An infectious and transmissible disease can be transmitted in many ways. Some ways require direct…

Q: All are true of endotoxins except

A: The outer membrane of a gram-negative bacteria made of lipopolysaccharide which acts as…

Q: To what sources of nosocomial infections is this patient exposed?

A: A hospital is a healthcare institution that provides treatment for the patients. There are various…

Q: Which of the following has the lowest infectious dose? Cholera Ghonorrhea Anthrax Measles Small pox

A: Introduction: One of the most crucial parameters defining the apparent transmission method and,…

Q: A group of pathogens that consist mostly of nucleic acids and that lack cellular structure.

A: Nucleic acids is the main hereditary structure of an organism, it called genome. All pathogen have…

Q: Which disease is among the seven most deadly infectious diseases? Asthma Diarrheal diseases Mumps…

A: INTRODUCTION Diarrheal disease Diarrhea is defined as passing three or more loose or fluid stools…

Q: Entamoeba coli is not a pathogen of humans. True False

A: Bacteria are single-celled organisms with a tiny in  size. Bacteria may be determined almost…

Q: why global events, such as the World Cup, with hundreds of thousands or even millions of attendees…

A: A mass gathering is a planned event that gathers large numbers of attendees and it might increases…

Q: Feces, gastric secretions, and urine are not considered infectious unless  there is contact with a…

A: C. They are visibly contaminated with blood

Q: An antibiotic which was effective 20 years ago against a specific type of bacterial infection no…

A: The chemical or biological molecules that used for killing or preventing the growth of bacteria are…

Q: When Sara is sitting in the Emergency Room waiting room and is wearing her appropriate PPE, what…

A: The best way to prevent a sporadic infection from becoming an epidemic or a pandemic is to…

Q: "All of the following are features of l-cell disease except- -coarse facial features -corneal…

A: I-cell disease is an inherited disorder which occur due to defect in…

Q: A man infected with a viral respiratory infection sneezes and releases tiny droplets containing…

A: INTRODUCTION Virus It is a microscopic infectious agent contain DNA or RNA as their genetic material…

Q: As the immune system increases fluids in a tissue resultng in swelling and increased mucus…

A: The immune system protects our bodies from intruders including viruses, bacteria, and foreign…

Q: Preventing Disease - weakened or killed pathogens used to, an 1. response (usually a shot) 2.…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: a pathogen forms a compatible interaction with the host? true or False

A: Introduction  In the broadest definition, a pathogen is any organism or agent that can cause…

Q: Why are fungal and protozoan diseases more important in the summer? (3 good reasons)

A: Pathogens are the disease causing agents. These include bacteria, virus, protozoa Or a fungus. They…

Q: Which of the following is NOT a likely portal of entry for a pathogen to enter a healthy body with…

A: microorganisms can enter our body via many routes.

Q: is inhereted, aquired or indused resistance to infection by a specific pathogen

A: Inherited resistance to infection is the specific resistance against a pathogen that is present in…

Q: The first stage of pathogenesis is evasion of the hosts immune system entry to the host…

A: Ability of a microorganisms to causes disease is known as pathogenic.Extent or degree to which an…

Q: Name one characteristic that makes the stomach a less suitable environment for pathogens

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Q: Describe the ways in which each of the following pathogens can disarm their host’s immune system or…

A: There are a number of different ways of evading or subverting the immune response. These…

Q: Infectious diseases may be contagious during? period of convalescence incubation period all…

A: Answer- The diseases can be categorized in two different groups that are infectious and…

Q: Like Texas Red Water Red Cattle Fever (which we did not study) Lyme disease is spread by: O infected…

A: INTRODUCTION Lyme disease This is a bacterial disease caused by Borrelia burgdorferi. Transmitted by…

Q: Histoplasmosis is coined by addition of the prefix osis to the generic name of the pathogen. * O…

A: Infections/diseases can be caused by a variety of pathogenic microorganisms. Viruses, bacteria,…

Q: Influenza has a ____ etiology.     protozoal     viral     bacterial     fungal

A: Etiology- The word Etiology is originated from a Greek word “aitiología”, the meaning of this word…

Q: True/False: Mucosal surfaces and external epithelia are major routes of pathogenic infection.…

A: Microorganisms are ubiquitous, that is they are present everywhere. The organisms that cause…

Q: Histoplasmosis is caused by exposure to: Mosquitoes Bird feces Stinging Nettles Poison Ivy

A: The Histoplasmosis infection is caused by some spores. When these spores are breathed after being…

Q: Which of the following is true about exotoxins? they are part of the cell wall they cannot be…

A: Introduction Exotoxins are the toxins (basic proteins) that are secreted by bacteria to invade the…

Q: Pick one bacterial, a viral, and eukaryotic pathogen of the Digestive, Circulatory, or lymphatic or…

A: Pathogenic eukaryotes have a place with a few particular phylogenetic heredities and have developed…

Q: A pandemic disease outbreak affects more parts of the world than an epidemic outbreak.

A: Answer: PANDEMIC : It is the spread or outbreak of infectious diseases  over a large populations…

Q: Lice are small wingless insects that make their home in human hair and feed on very small amounts of…

A: Communicable diseases include HIV , hepatitis , measles , snd blood borne diseases.  Non…

Q: Which of the following is a parasitic blood disease that avoids the immune system by occasionally…

A: Answer Trypanosomes

Q: Measles is an example of a disease caused by a bacterium. True False A dormant virus can be…

A: The viruses are microbes which proliferate only inside the host. These can not grow and reproduce…

Q: Which form of viral infection is described by this example? Adenovirus infection (a type of common…

A: Adenovirus is one of the viruses used as vectors for gene transfer. It is a nonenveloped…

Q: The greatest number of pathogens enter the body through the

A:

Q: Difference between an epidemic and pandemic

A: Disease is caused due to deviation in the normal functioning of the body caused by the pathogens…

Q: person with aids is likely to develop infectious diseases because the virus that causes aids

A: Virus is a microscopic organism which contains a protective coat and the nucleic acid. It doesn’t…

Q: The structure in the box (upper left of figure) is used to attache to the digestive tract of a host.…

A: Parasite are small organisms that generally resides outside or inside the host body and their main…

Q: Diseases such as poliomyelitis (polio) and acquired immunodeficiency syndrome (AIDS) are caused by a…

A: A virus is a tiny infectious microbe which consists of a DNA or RNA segment, which is almost…

Q: There is an outbreak of food poisoning at a local restaurant. The patrons present with 24 hours of…

A: # Please send one question at a time . here I have given an answer to first question.  Option B i.e.…

Q: Example is pertussis toxin Neurotoxins Enterotoxins Cytotoxins Damage a variety of cell types…

A: . Neurotoxins is the toxin which affects mainly The Nervous System and brain especially  the way…

Q: The belief held by Hippocrates that when the balance of all things in life like nutrition, exercise,…

A: There were proposed several hypothesis on the causative factor of a disease. Some belief that it was…

Q: What is the term that describes the ability of a virus to cross the blood-brain barrier and infect…

A: A virus, an unseen microorganism, infiltrates our body. It infiltrates our tissues and then…

Q: In the case of pathogen infections, chronic inflammation indicates that the pathogen has become an…

A: The system that helps the body to fight against harmful and disease-causing organisms the immune…

Q: Which pandemic was worse: the 1918 flu pandemic or the COVID-19 pandemic

A: Given: Need to find which pandemic is worse among 1918 flu and covid 19.

Q: Which are both mechanical barriers to the transmission of pathogens? skin and stomach acid O mucus…

A: Pathogens are the organisms that are capable of disrupting the normal physiological balance of an…

Q: Virulence is a measure of how many viral particles are involved in infection. True False

A: Virulence is a pathogen's or microorganism's ability to cause damage to a host. It is a frequently…

Q: The term for a disease that has an unknown cause is ___.     noxious     idiopathic…

A: Any disease that is of uncertain or unknown origin may be termed as idiopathic. It may be diagnosis…