1.The function of pilli on the surface of bacteria is for: a. To provide force for...
1.The function of pilli on the surface of bacteria is for: a. To provide force for movement.
b. Colonizing host by binding to host tissues.
c. Uptake of nutrients for phagocytosis.
d. None of the above.
Homework Answers
B. Colonizing host by binding to host tissues.
Pili are the thin rigid fibre made of protein that protrudes out from the cell surface . It's made of pilin protein which are oligomeric in nature . Bacteria usually attach with the help of pili to a surface in the start of their reproductive period . Pili are antigenic in nature . They are very fragile structures so they are replaced frequently which makes them differ in their antigenicity. They are of various types like conjugative pili , type IV pili etc. Pili are also responsible for the virulence character of bacteria like e coli, vibrio choleri, streptococcus . It depends on their holding capacity to the host cell the better they are attached to the cell surface the better will be their replicability and more the nutrition will be used. On many studies it has been found that when there are many strains of a single species , non pathogenic bacteria were devoid of pili and pathogenic ones were pili containing bacteria.
Add Answer to:
1.The function of pilli on the surface of bacteria is for: a. To
provide force for...
14. Bacteria capsules: a Somewhat protect the organism from destruction in an unfavorable enviro b) Enhances...
14. Bacteria capsules: a Somewhat protect the organism from destruction in an unfavorable enviro b) Enhances the organism's virulence. c) Helps hide the organism from the host's immune system. d) All of the above are true. 15. Empty glassware and metal instruments might correctly be sterilized by: a) Autoclaving b) Dry heat c) UV light d) Ionizing radiation 16. Disinfectants: a) May be applied to the skin surfaces b) May be used to decontaminate wounds and abrasions. c) May be...
Normal functioning microflora associated with humans provide which of the following benefits to their host? a...
Normal functioning microflora associated with humans provide which of the following benefits to their host? a Stimulate production of cross-reactive antibodies b May antagonize other bacteria c Stimulate development of certain tissues such as the intestines d All of the above are benefits provided by normal microflora
QUESTION 48 is the ability of bacteria to alter surface proteins on the cell wall. a....
QUESTION 48 is the ability of bacteria to alter surface proteins on the cell wall. a. Antigenic variation b. Phase variation c. Density expression d. Quorum sensing e. none of the above
11) In order to transport material across the plasma membrane, in most cases, bacteria cell have:...
11) In order to transport material across the plasma membrane, in most cases, bacteria cell have: The following questions are true false. Use A for true and B for false. 13) Glucose has 5 carbons 14) Cysteine and Glutamine are cuamples of nitrogenous bases of DNA 15) The phosphate in DNA is attached to the third carbon of the sugar. 16) Water is formed during the synthesis of lipids 17) Glycogen is an example of a carbohydrate. Back to multiple...
22. The counter-current exchange mechanism observed in the loop of Henle results in a high efficiency...
22. The counter-current exchange mechanism observed in the loop of Henle results in a high efficiency of removing water from the descending loop because: a. the water can be so rapidly taken back up by the ascending loop before the fluid leaves the loop b. fluid in the descending loop is always moving toward tissues that have slightly lower solute e. tissues outside the descending loop always have higher solute potential than the fluid inside the d. no energy needs...
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory...
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory reception C. helps control body temperature d. all of the above QUESTION 2 Coronary arteries supply oxygen and nutrients to the a. stomach b. brain C. heart d. kidneys QUESTION 3 Which of the following tissues is responsible for peristalsis? a. Skeletal muscle b.smooth muscle C. cardiac muscle d. bone
42. The bacteria that line the gut of the human help maintain normal gut health and provide essential nutrients. Th...
42. The bacteria that line the gut of the human help maintain normal gut health and provide essential nutrients. This type of relation is called: A. parasitic. B. compensatory C. mutualistic. D. saprophytic. A e 100% search F11 F10 F9 F8 F7 F6 FS F4 F3 & $ ## 55 3 P U Y 7 CO T 4
42. The bacteria that line the gut of the human help maintain normal gut health and provide essential nutrients. This type of...
Phagocytosis of aged, damaged, or otherwise unwanted cells makes use of PRRs that recognize: Damage-associated...
Phagocytosis of aged, damaged, or otherwise unwanted cells makes use of PRRs that recognize: Damage-associated molecular patterns Pathogen-associated molecular patterns Peptidoglycan Double-stranded RNA All of the above Which of the following statements about phagocytosis is FALSE? Phagocytes move toward an area of infection by a process called chemotaxis The phagolysosome is a vacuole in which bacteria are exposed to degradative enzymes Phagocytes have receptors that recognize complement proteins bound to bacteria Phagocytes do NOT have receptors that recognize bacteria...
Bacterial Quorum Sensing, Pathogenicity Islands, and Secretion Systems 1. Briefly describe how bacterial quorum sensing may...
Bacterial Quorum Sensing, Pathogenicity Islands, and Secretion Systems 1. Briefly describe how bacterial quorum sensing may play a role in pathogenicity by: a) Promoting initial colonization of a new host; b) Enabling the bacterium to persist within that host; and c) Allowing some of the bacteria to spread to a new location within a host or to a new host. 2. Briefly describe how the ability to produce a type 3 secretion system might play a role in a pathogen...
An inanimate object that may be contaminated with a pathogen and thus serve as an agent...
An inanimate object that may be contaminated with a pathogen and thus serve as an agent of disease transmission is called: Vector fomite pathogen host none of the above Which of the following bacteria virulence factors lyses erythrocytes causing anemia? a. hyaluronidase collagenase coagulase hemolysin e. bacteria kinase 9. Which of them listed in question eight above dissolves blood clots? Surface molecules or structures that bind a pathogen to a specific surface of the host cell are collectively called: a....
14. Bacteria capsules: a Somewhat protect the organism from destruction in an unfavorable enviro b) Enhances the organism's virulence. c) Helps hide the organism from the host's immune system. d) All of the above are true. 15. Empty glassware and metal instruments might correctly be sterilized by: a) Autoclaving b) Dry heat c) UV light d) Ionizing radiation 16. Disinfectants: a) May be applied to the skin surfaces b) May be used to decontaminate wounds and abrasions. c) May be...
QUESTION 48 is the ability of bacteria to alter surface proteins on the cell wall. a. Antigenic variation b. Phase variation c. Density expression d. Quorum sensing e. none of the above
11) In order to transport material across the plasma membrane, in most cases, bacteria cell have: The following questions are true false. Use A for true and B for false. 13) Glucose has 5 carbons 14) Cysteine and Glutamine are cuamples of nitrogenous bases of DNA 15) The phosphate in DNA is attached to the third carbon of the sugar. 16) Water is formed during the synthesis of lipids 17) Glycogen is an example of a carbohydrate. Back to multiple...
22. The counter-current exchange mechanism observed in the loop of Henle results in a high efficiency of removing water from the descending loop because: a. the water can be so rapidly taken back up by the ascending loop before the fluid leaves the loop b. fluid in the descending loop is always moving toward tissues that have slightly lower solute e. tissues outside the descending loop always have higher solute potential than the fluid inside the d. no energy needs...
QUESTION 1 Which of the following is a function of skin? a. prevents dehydration b. sensory reception C. helps control body temperature d. all of the above QUESTION 2 Coronary arteries supply oxygen and nutrients to the a. stomach b. brain C. heart d. kidneys QUESTION 3 Which of the following tissues is responsible for peristalsis? a. Skeletal muscle b.smooth muscle C. cardiac muscle d. bone
42. The bacteria that line the gut of the human help maintain normal gut health and provide essential nutrients. This type of relation is called: A. parasitic. B. compensatory C. mutualistic. D. saprophytic. A e 100% search F11 F10 F9 F8 F7 F6 FS F4 F3 & $ ## 55 3 P U Y 7 CO T 4
42. The bacteria that line the gut of the human help maintain normal gut health and provide essential nutrients. This type of...
An inanimate object that may be contaminated with a pathogen and thus serve as an agent of disease transmission is called: Vector fomite pathogen host none of the above Which of the following bacteria virulence factors lyses erythrocytes causing anemia? a. hyaluronidase collagenase coagulase hemolysin e. bacteria kinase 9. Which of them listed in question eight above dissolves blood clots? Surface molecules or structures that bind a pathogen to a specific surface of the host cell are collectively called: a....
Most questions answered within 3 hours.
-
One tablet of Tums contains 350.0 mg of CaCo3. If 4 tablets of
Tums is added...
asked 1 minute ago -
Jason Allen is saving for an Australian vacation in three years.
He estimates that he will...
asked 23 minutes ago -
starting in the radial vein list in order all the vessels through
which an erythrocyte will...
asked 29 minutes ago -
Management at Work
As the training and development manager at the Litter*Bit*Better
Cat Litter Company, part...
asked 31 minutes ago -
What is the significance of the constraints in a physical model?
What part do distinct constraints...
asked 1 hour ago -
a student was diagnosed with myopia (nearshightedness). He can
comfortably read a newspaper when it is...
asked 1 hour ago -
Consider a 3m x 3m window in a house. The thermal conductivity
is reported to be...
asked 2 hours ago -
Why has California been the favorite destination of large number
of secondary migrants?
asked 2 hours ago -
Do not neglect the old for the new. The existing business must
not lose priority simply...
asked 5 hours ago -
Kylie is a single mom with two dependent children,
Tanner, age 7 and Olivia, age 11....
asked 6 hours ago -
Phosphorous + bromine = phosphorous tribromide. If 35.0 g of
bromine are reacted and 27.9 grams...
asked 8 hours ago -
Derive the long wavelength limit of the Planck energy density
distribution
asked 8 hours ago