What type of immunity provides lifetime immunity for the body against a specific pathogen?

1 answer:

4 0

The type of immunity that provides lifetime immunity for the body against a specific pathogen is called acquired immunity. It is also referred to as adaptive or specific immunity.

Acquired immunity is not present at birth. it is learned. As a person's immune system encounters foreign substances (antigens) the components of acquired immunity learn the best way to attack each antigen and begin to develop a memory for that antigen. Acquired immunity is also called specific immunity because it tailors its attack to a specific antigen previously encountered. Its uniqueness lies in its ability to learn, adapt and remember.

Acquired immunity takes time to develop after first exposure to a new antigen. However afterward, the antigen is remembered, and subsequent responses to that antigen are quicker and more effective than those that occurred after first exposure. Memory of a particular antigen is kept by the B and T lymphocytes.

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_____are commonly called producers

defon

Answer:

Autotrophs

Explination: They are called this because they use the energy and simple inorganic compounds to produce organic molecules.

5 0

3 years ago

Q? Describe the concentration gradient of carbon dioxide across the cell membrane.

hoa [83]

Answer:

Carbon dioxide goes with the concentration gradient across the cell membrane. It goes in the direction of the concentration gradient, from high concentration to low concentration.

Explanation:

$CO_{2}$ undergoes simple diffusion, which is an example of passive transport. Passive transport diffusion goes with the concentration gradient, while on the other hand, active transport goes against the concentration gradient.

Going with the concentration gradient means that the molecules move from areas of high concentration to areas of low concentration. This is what carbon dioxide does.

Going against the concentration gradient means that the molecules move from areas of low concentration to areas of high concentration. This goes against the concentration gradient.

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3 years ago

Which of the bulk minerals has the highest recommended dietary allowance (rda), at 4700 mg?

pogonyaev

Potassium is one of the bulk minerals that have the highest recommended dietary allowance (RDA), at 4700 mg.

<h3>Recommended dietary allowance of Potassium</h3>

The most common intracellular cation, potassium, is the most important nutrient and is naturally found in a variety of foods as well as being sold as a dietary supplement.
Due to its function in maintaining the volume of intracellular fluid and transmembrane electrochemical gradients, potassium is present in all bodily tissues and is necessary for normal cell function.
To maintain its regular intracellular and extracellular quantities, about 90% of the potassium that is consumed is absorbed and utilized.
The Recommended Dietary Allowance (RDA), which is the average daily intake of nutrients necessary to cover the needs of virtually all (97–98%) healthy people, is frequently used to create dietary plans for individuals that are nutrient sufficient.
The recommended daily amount (RDA) for potassium is 4700 mg, which makes it one of the bulk minerals with the highest RDA.