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B. A recognition molecule on the surface of the cells.
What is antigen?An antigen is a substance that is capable of triggering an immune response in the body. It is typically a foreign substance, such as a pathogen (e.g. a virus or bacterium), a toxin, or a non-infectious particle (e.g. pollen or dust), that is recognized by the immune system as being foreign and potentially harmful.
When an antigen enters the body, it is recognized by immune cells called B cells and T cells, which produce proteins called antibodies to help neutralize and remove the antigen. The antigen-antibody interaction is a key part of the body's immune response and helps to protect us against infectious diseases.
Antigens can also be present on the surface of our own cells, such as cancer cells or transplanted organs, and can trigger an immune response if they are recognized as foreign by the immune system.
Overall, antigens are important components of the body's immune system and play a critical role in protecting us against infectious diseases and other threats.
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Related Questions
Identify and define each of the basic science process skills
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Answer:
Explanation:
Science process skills are the things that scientists do when they study and investigate. Observing, classifying, communicating, measuring, inferring and predicting are among the thinking skills used by scientists, teachers and students when doing science.
For example, when the intensity of light entering the eye increases, a ____________ reflex is triggered, and the circular muscles of the iris are stimulated to contract.
Answers
Answer:An increase in light intensity causes both pupils to contract (see iris) even if only one retina is directly stimulated. This is known as a consensual reflex. Conversely, a decrease in light intensity causes dilation of the pupils
Explanation:
where is earth's magnetic north pole?
Answers
Answer:
The north magnetic pole is a point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downward (in other words, if a magnetic compass needle is allowed to rotate in three dimensions, it will point straight down)
Explanation:
There is only one location where this occurs, near (but distinct from) the geographic north pole. The geomagnetic north pole, a related point, is the pole of an ideal dipole model of the Earth's magnetic field that most closely fits the Earth's actual magnetic field.
The Earth's magnetic pole is situated at west of the Ellesmere Island in northern Canada at the geographical location of 81°18′N 110°48′W.
What is the Earth's magnetic pole?The generation of the Earth's magnetic field occurs deep within the Earth's interior, in a layer which is known as the outer core to be more precise. Here, the convective energy from the slow-moving molten iron is converted to the electrical and magnetic energies.
The north magnetic pole of the Earth moves over time according to the magnetic changes and flux lobe elongation in the Earth's outer core. In the year 2001, it was determined by the Geological Survey of Canada to lie west of the Ellesmere Island in northern Canada at the geographical location of 81°18′N 110°48′W. It was situated at 83°06′N 117°48′W in 2005.
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what type of a receptor would provide information on lung expansion to respiratory centers in the brainstem?
Answers
Name 3 things that come from decayed plants, are fossil fuels, and release carbon dioxide when they are burned.
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Answer:
carbon cycle, neutral, and decomposition
list the
amino acids that are coded for by the codons
AGU, GGG, CCU, and GUG.
Answers
Answer:
If you have your codon to amino acid chart, it might come in handy.
The answers are:
Serine, Glycine, Proline, and Valine
Read the excerpt from "The Lady Maid's Bell." I had been near a week at Brympton before I saw my master. Word came that he was arriving one afternoon, and a change passed over the whole household. It was plain that nobody loved him below stairs. Mrs. Blinder took uncommon care with the dinner that night, but she snapped at the kitchen-maid in a way quite unusual with her; and Mr. Wace, the butler, a serious, slow-spoken man, went about his duties as if he'd been getting ready for a funeral. He was a great Bible-reader, Mr. Wace was, and had a beautiful assortment of texts at his command; but that day he used such dreadful language that I was about to leave the table, when he assured me it was all out of Isaiah; and I noticed that whenever the master came Mr. Wace took to the prophets. Which best describes a gothic element in the excerpt and the social attitude it reveals? The arrival of Mr. Brympton causes fear, revealing that men are powerful in the world. Mrs. Blinder prepares a dinner well, revealing that cooking is considered the highest art. Mr. Wace reads the Bible, revealing that religion is no longer a respected institution. The servants do not like the master, revealing that having servants is no longer acceptable.
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Answer:
A.) The arrival of Mr.Brympton causes fear,revealing that men are powerful in the world.
Explanation:
This is because after he arrives, the slaves hate him. However, the fact that Mr. Wallace reads a bible doesn't matter because he is more worried that his master is back same with the cook. Therefore, it would be that this particular man is very powerful and has power over these people.
The arrival of Mr.Brympton causes fear that men are powerful in the world.
What is Gothic element?This is because after he arrives, the slaves hate him. However, the fact that Mr. Wallace reads a bible doesn't matter because he is more worried that his master is back same with the cook. Therefore, it would be that this particular man is very powerful and has power over these people.
The Gothic Novel is believed to have first appeared in the late eighteenth and early nineteenth centuries, drawing its inspiration from the corresponding architectural style.
The setting is typically a castle or estate in a remote area, far from any cities or civilisation. Dark, ominous, and enigmatic, this genre frequently incorporates themes of terror, horror, the macabre, and the odd.
Therefore, The arrival of Mr.Brympton causes fear that men are powerful in the world.
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What is the term used to identify a molecule responsible for reducing the amount of
energy needed for chemical reactions to happen?
Answers
Hope this helps :)
Answer:
The process of speeding up a reaction by reducing its activation energy is known as catalysis, and the factor that's added to lower the activation energy is called a catalyst.
Explanation:
I hope this helps
The energy in ATP is -
a
Stored in the vacuoles
b
Not widely used by cells
c
Stored between its phosphate groups
d
Not very useful
Answers
Answer:
adenosine triphosphate
Explanation:
adenosine triphosphate (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.
B
The pedigree below depicts a dominant trait. What is the genotype of individual I-1 (use the letter A for a dominant allele and a for a recessive allele)? How did you come to this conclusion? Using your best grammar, write 3-5 sentences.
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A pedigree chart is a diagrammatic representation showing the occurrence and appearance of phenotypes of a particular gene/traits and its ancestors from one generation to the next establishing relationships between individuals in a family.
Using the letter A for a dominant allele and a for a recessive allele, the genotype of individual I-1 is Aa.
In the key pedigree nomenclature, an individual marked with the black ink is affected with the trait (and this trait is dominant - A). Looking at the F1 generation, there are males affected and females as well. For inheritance of the trait, just one copy is enough to become affected. Therefore, the male parent is heterozygous for the trait and the female normal (aa) to enable the production of both affected and non-affected individuals.Learn more about pedigrees: https://brainly.com/question/318443
Which term means, "changes over
time"?
A. ecological disturbance
B. ecological succession
C. biodiversity
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An organism that reproduces sexually has a diploid number of 30. How many
chromosomes will a gamete of this organism have?
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Answer:
Gamete of organism has a haploid number of chromosomes.
2n = 30
n = 15
A diploid cell containing 30 chromosomes will result in 15 chromosomes in each of the 4 daughter cells after meiosis occurs.
After first nuclear and cellular division (Meiosis I), each daughter cell will only have 15 chromosomes as homologous chromosomes are broken apart at Anaphase I of meiosis I. Chromosomal number is halved. After the second nuclear and cellular division (Meiosis II), each daughter cell will also have 15 chromosomes. This time, instead of the chromosomal number being halved, their chromosomal contents are halved. Sister chromatids are separated at Anaphase II of Meiosis II, resulting in daughter chromosomes each.
Hope it helped!(:
Explanation:
Please explain, why do we age?
Answers
Answer:
According to this theory, aging occurs through small and random damaging events in a cell that add up over time. These damaging events may come from our own metabolism, as the basic mechanism of metabolism sometimes causes damage to molecules within our cells.
Answer:
according to this theory, aging is caused by changes in hormones.
Explanation:
hormones are which are produced by the endocrine system.
Here is an image of the mitochondria. Mitochondria numbers can differ between cell types based on the function of the cell. Which of these cells would contain the highest number of mitochondria? A) skin cell B) lung cell C) muscle cell D) red blood cell.
Answers
The cell organelle that produces most of the energy for cell functioning and growth is mitochondria. Mitochondria is a double membrane organelle that varies in number in cells.
The highest number of mitochondria is found in:
Option C) Muscle cells
The function of mitochondria can be explained as:
Muscle cells and tissues are bodily organizations that constantly and frequently move so to provide energy for the actions the muscle cells have the highest number of mitochondria.The skin and lungs cells vary in mitochondrial quantity and may contain hundreds or thousands. Some amount of cell requires more amount of energy as compared to others so the number of mitochondria in those cells will be more.The blood cell of mammals lack mitochondria in their structure.Therefore, muscle cells have the highest number of mitochondria.
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what would happen if cells with mutated dna replicated
Answers
Answer: Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division.
Explanation: If they replicated than the entire thing would copy that and would be permanent.
A muscle contracts in response to an electrical signal that signals the ______________, the unit of contraction, to shorten.
Answers
Answer:
Sarcomere
Explanation:
A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for muscular contraction.
A lab investigation involves using food coloring to track diffusion. Which action should students take to avoid damaging their clothing? Wear old, stained clothing to the lab. Wear a lab apron or lab coat over clothing. Have plenty of paper towels for cleaning up spills. Tuck sleeves into long safety gloves.
Answers
While working in labs with chemicals or specimens one should follow good laboratory practices. Professional conduct and manner should be maintained during working in labs.
The action that should be taken by a student is:
Option B. Wear a lab apron or lab coat over the clothing.
The good lab practices can be explained as:
To avoid staining clothes individuals should wear lab coats over their clothes.Lab coats avoid staining and splashing your skin and clothes from chemicals and dyes.Lab coats are designed to protect against corrosive chemicals from soaking into the skin.Therefore, the student should wear lab coats and aprons.
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Answer:
B
Explanation:
Edge 2022 trust the process
Describe the differences between a monocot and a dicot. Are they similar in any way? Provide examples in your explanation. PLEASEE
Answers
Answer:
Monocots differ from dicots in four distinct structural features: leaves, stems, roots and flowers. ... Whereas monocots have one cotyledon (vein), dicots have two. This small difference at the very start of the plant's life cycle leads each plant to develop vast differences. They are similiar in ssome ways are they both grow with a type of leave same shae in third growing proscess
Explanation:
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Monocots differ from dicots in four distinct structural features: leaves, stems, roots and flowers. But, the differences start from the very beginning of the plant's life cycle: the seed. Within the seed lies the plant's embryo. Whereas monocots have one cotyledon (vein), dicots have two.
Similarities :-Both monocots and dicots have stamens with two pairs of pollen sacs, male gametophytes of three cells, and female gametophytes made up of seven cells with eight nuclei. Also, the carpel is closed.
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Which part of the plant releases energy from food
Answers
The Mitochondria of a plant cell releases energy from the food. It is a cell organelle and is present in the cytoplasm. They make most of the essential ATPs (Adenosine Tri Phosphate).
Describe how the presence of lead in body cells could interfere with the
ability of enzymes to function. *
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Answer:
Descreva como a presença de chumbo nas células do corpo pode interferir com o capacidade de funcionamento das enzimas. *
Explanation:
espero ter ajudado boa noite
Explain the carbon circle in 5 sentences
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Answer:Carbon moves from the atmosphere to plants.
Carbon moves from plants to animals.
Carbon moves from plants and animals to soils.
Carbon moves from living things to the atmosphere.
Carbon moves from fossil fuels to the atmosphere when fuels are burned.
Carbon moves from the atmosphere to the oceans.
help taking final will give the breian thing
Answers
what is your question? i cant download it
A ____ is the coding and
is the trait.
Answers
This refers to a pool of insurance companies in New York State that writes fire insurance policies for homeowners, as well as coverage for vandalism and malicious theft?
Answers
There are different types of Association. New York Property Insurance Underwriting Association is known to be a pool of insurance companies in New York State that writes fire insurance policies for homeowners
NYPIUA was known to be set up in 1968. This is due to the follow up to the laws of the State of New York to give basic property insurance such as fire, extended coverage, vandalism and malicious mischief, etc. to its consumers who cant get such coverage in the free market.
An underwriters association is known to be an industry group set up for professionals in the insurance underwriting profession.
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What is the wresting move for a war front
Answers
Answer:
I think it's a Power slam-
Explanation:
Sorry if it's wrong
ready-to-eat tcs food must be date marked if it will be stored for longer than:
Answers
Given what we know, we can confirm that ready-to-eat TCS food must be date marked if it will be stored for longer than 24 hours.
What is TCS food?TCS food refers to food that must be stored in temperature-controlled environments to ensure safety.These foods, if not stored properly and at the correct temperatures can cause sickness to the consumers.Why does it need to be date-marked?The reason the foods need to be date-marked is to relay information to the potential consumer as to by when the food should be consumed. This is done to ensure that if stored correctly, the food does not have time to spoil and cause health risks for consumers.Therefore, we can confirm that ready-to-eat TCS food must be date marked if it will be stored for longer than 24 hours in order to protect the health of the consumers.
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the part of the eye that determines eye color is the
Answers
Answer:
It is the iris that determines eye color.
Explanation:
A person's eye color results from pigmentation of a structure called the iris, which surrounds the black hole in the center of the eye, the pupil. It helps control how much light can enter the eye. The color of the iris can obviously range from blue, green, brown and I think grey too if fiction books can be trusted lol
HELP i need this question fast pls anyone i will mark brainliest
Answers
Answer:
hi! the answer you already have marked is correct.
Explanation:
D. Weathering and erosion by water.
have a great day!
hope this helped!
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Answer:
D. Weathering and erosion by water
Explanation:
The river water carries sediment to different areas and lays them there. However, after breaking down the river sediment it opens a bigger area in which water may flow, thus allowing the river to become wider
a veggie garden is 2 meters long by seven meters wide. it is home to 168 mice. what is the population density of the mice?
Answers
12*7=84 meters
168/84= 2
There is 2 mice per meter in the vegetable garden.
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Describe the reproductive process of an angiosperm, from pollen production through the formation of a seed.
Answers
Answer:
The angiosperm life cycle consists of a sporophyte phase and a gametophyte phase. The cells of a sporophyte body have a full complement of chromosomes (i.e., the cells are diploid, or 2n); the sporophyte is the typical plant body that one sees when one looks at an angiosperm.
Explanation:
