Answer:
True.
Explanation:
Memory cells and antibodies are indeed essential components of the acquired immune system, and they play a crucial role in the effectiveness of vaccines. Memory cells are specialized immune cells that "remember" previous encounters with pathogens. When the body is exposed to the same pathogen again, memory cells facilitate a quicker and stronger immune response, leading to faster clearance of the infection. Antibodies, on the other hand, are proteins produced by the immune system in response to foreign substances (antigens), such as those present in pathogens. Antibodies help neutralize or eliminate the pathogens, preventing the infection from spreading.
Vaccines work by stimulating the immune system to produce memory cells and antibodies against a specific pathogen without causing the actual disease. This prepares the immune system to respond rapidly and effectively if the person is exposed to the actual pathogen in the future.
True. Memory cells and antibodies are essential parts of the acquired immune system and are why vaccines work.
The acquired immune system is a complex defense mechanism that protects the body from pathogens. It consists of specialized cells and molecules that work together to recognize and eliminate foreign invaders. Two essential components of the acquired immune system are memory cells and antibodies.
Memory cells are a type of white blood cell that are formed after an initial exposure to a pathogen. They 'remember' the pathogen and allow for a faster and more effective immune response upon subsequent exposures. When the body encounters the same pathogen again, memory cells quickly recognize it and initiate a targeted immune response, preventing the pathogen from causing a full-blown infection.
Antibodies, also known as immunoglobulins, are proteins produced by the immune system in response to the presence of a specific pathogen. They bind to the pathogen and help neutralize or eliminate it from the body. Antibodies can recognize and bind to specific molecules on the surface of pathogens, marking them for destruction by other immune cells or neutralizing their harmful effects.
Vaccines work by stimulating the production of memory cells and antibodies without causing the full-blown disease. They contain weakened or inactivated forms of pathogens or specific components of pathogens. When a vaccine is administered, the immune system recognizes these components as foreign and mounts an immune response, producing memory cells and antibodies specific to the pathogen. This provides immunity against the pathogen, so if the person is later exposed to the actual pathogen, their immune system can respond rapidly and effectively, preventing or reducing the severity of the infection.
Learn more about memory cells, antibodies, and the acquired immune system here:
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B. Detritus feeders
C. Producers
D. Secondary consumers
B. meteoroid that burns up in Earth’s atmosphere, producing a streak of light.
C. small, rocky object that orbits the Sun and is usually found in a belt between the orbits of Mars and Jupiter.
D. small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.
lipid
B.
nucleic acid
C.
carbohydrate
D.
protein
Answer:
The correct answer is B. nucleic acid
Explanation:
DNA (deoxyribonucleic acid) is a biomolecule which belongs to the chemical groups of nucleic acids. Nucleic acids include DNA and RNA (ribonucleic acid) and they were called in this way because they were discovered initially within the nucleus of the cells. They are polymers- composed by nucleotids bonded in definited sequences- and they are in charge of the genetic information transference in living organisms.
b. unproductive wells
c. polluted groundwater
d. higher water tables
The correct answer is B. Unproductive wells.
The possible long-term consequences of groundwater overdraft is the unproductive wells.
Groundwater overdraft is known to occur when the ground water which is used exceeds the amount which is in the aquifer.
Groundwater results in reduced in supply of water reason being groundwater pumping costs, groundwater contamination, aquifer depletion or cost of well deepening.
The possible long-term consequence of groundwater overdraft is b. unproductive wells.
Groundwater overdraft occurs when the extraction of groundwater exceeds the rate of natural recharge, depleting underground aquifers. This unsustainable practice can lead to lowered water tables, land subsidence, saltwater intrusion, and ecological damage. It is a significant concern in areas where groundwater is a primary source of freshwater.
The possible long-term consequence of groundwater overdraft is unproductive wells. Groundwater overdraft occurs when the amount of water withdrawn from an aquifer exceeds the amount that is replenished over time. This can lead to a depletion of the aquifer and the drying up of wells that depend on it for water supply.
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Answer:The correct answer is limiting factor
Explanation: