The responses observed in type IV hypersensitivities result from the action of T cells and phagocytes.
Hypersensitivity IV type, also called delayed-type hypersensitivity (DTH), involves T cell-antigen interactions that cause activation and secretion of cytokines. This type of hypersensitivity requires sensitized lymphocytes that respond 24–48 hours after exposure to soluble antigens. A type IV hypersensitivity reaction is a cell-mediated reaction that can occur in response to contact with certain allergens, resulting in what is called contact dermatitis, or in response to certain diagnostic procedures such as the tuberculin skin test. Certain allergens need to be avoided to treat this condition. Type IV hypersensitivity response is observed results from the action of T cells and macrophages while other types are mediated by antibodies. This reaction occurs at least 1–3 days after the initial exposure. Type IV hypersensitivity is the mechanism of many autoimmune disorders.
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PLEASE HELP ME!!!!
What would happen to the members of a food web if most of the trees died?
A. only the trees will be effected
B. only things that eat tree leaves will have less to eat
C. Nothing will happen
D. The whole food web will be disrupted
What are 2 characteristics of index fossils?
How many molecules of carbon dioxide are produced from the process of cellular respiration of one glucose molecule?
Answer:
During this stage, two turns through the cycle result in all of the carbon atoms from the two pyruvate molecules forming carbon dioxide and the energy from their chemical bonds being stored in a total of 16 energy-carrying molecules (including 4 from glycolysis
Explanation:
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Nicole lives in the Arctic which has a temperature as low as –40°C.
(a) What class of food should Nicole consume continuously to adapt herself to the cold temperature?
Oats, bananas, red meats, but STAY AWAY from drugs & alcohol!
What is the difference between flu viruses and the measles virus?
Answer:Influenza and measles are viruses that both cause respiratory symptoms. The typical measles rash does not appear for 2-4 days, so during influenza season, symptoms of early measles can be confused with influenza.
Explanation:
Explanation:
Vaccines for both measles and flu already exist, however the flu vaccine must be updated because of the virus's ability to change and adapt in order to invade cells in the human body. The goal of researchers was to find genes in each virus that cannot survive changes.
By comparing two similar viruses which attack the body in similar ways through the lungs, researchers confirmed that the measles virus is much less open to evolutionary change by using an experimental technique called insertional mutagenesis to change the genes of each virus.
What is the mass of a box accelerating at 3 m/s^2 applying 36 N of force? Hint: Mass = force / acceleration
Answer:
I have attached a picture of me explaining how to find the mass. Hope this helps, thank you !!
9 What happens to oceanic plates at convergent boundaries? A One is forced underneath the other to form trenches B. They move in opposite directions C They get bigger as new crust is formed D They push against each other to form ridges 9 of 10
Answer:
a
Explanation:
how do you understand geological hazards?
Answer:
Geologic Hazards
Seismic hazards related to earthquakes, including ground rupture/faulting, liquefaction, strong motion, and tsunami.Landslides of all kinds, including seismically-triggered landslides, debris flows, mud flows, and rock falls.Mineral hazards such as asbestos, radon, and mercury.Explanation:
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How are the organs attached to the other body systems?
the body has levels of organisms that built on each other cells make up tissues, tissues make up organs, and organs make up organs system the function of an organs system
depends on the the integrated activity of it organs for instance digestive system organs corporate to process food
1. What are the different properties of light that apply to the image formation of
optical devices such as mirrors and lenses?
Answer:
Optical instruments are based on optics. They use mirrors and lenses to reflect and refract light and form images. The light microscope and telescope use convex lenses and mirrors to make enlarged images of very tiny or distant objects. A camera uses a convex lens to make a reduced image of an object.
The property of light that is important to the image formation in mirrors is reflection. The property of light that is important in the formation of an image by lenses is refraction.
Light refers more specifically to the portion of the electromagnetic spectrum that is perceivable with the optical eyes. There are several properties of light such as reflection, refraction, diffraction, interference, etc.
The property of light that is important to the image formation in mirrors is reflection. The property of light that is important in the formation of an image by lenses is refraction.
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Use chaparral and tundra in separate sentences
Answer:
The arctic tundra is extremely cold all year round.
To reach the ruins, we had to travel through much chaparral.
Explanation:
2. What might happen to the population of
rabbits if there were no foxes? sc.7.L.17.3
A
the population would increase
8 the population would decrease
© the population would stay the same
there would be no effect
D
Which of the following describes humidity?
The temperature of the air
The weight of the air pressing down on you
The amount of water vapor in the air
The direction the wind is blowing
Answer:
Humidity describes the amount of water vapor in the air, and the more water vapor that is present, the more humid it is. ... This is the amount of water vapor in the air relative to what the air can hold. This is just like figuring out how much water is in a cup relative to the total amount of water that cup can hold.
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How do living organisms maintain homeostasis within their bodies?
Answer:
The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.
Explanation:
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Answer:
Look below.
Explanation:
They maintain homeostasis by regulating temp, glucose, toxins, blood pressure, and pH.
The Milky Way galaxy was given its name because of what it looks like when viewed from Earth.
True False
Answer:
false. we cant see the whole galaxy from earth.
Answer:
the answer is false
Explanation:
we can't see the milky way (galaxy) from earth, its impossible since its so far away. unless we used a telescope maybe, not sure but for this question its false. I hope this helped!
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what releases carbon dioxide into the atmosphere
Answer:
Carbon Dioxide Emissions: Human Sources
Human activities such as the burning of oil, coal and gas, as well as deforestation are the primary cause of the increased carbon dioxide concentrations in the atmosphere.How many times more erosion occurs in a soil with 3% moisture than a soil with 7% moisture is a 15 m s-1 wind?
Answer:
Twice.
Explanation:
If a soil with 3% moisture has twice the rate of erosion as compared to the soil having 7% moisture if both experience same speed of wind i. e. 15 m/s. This is because moisture held the particles of soil tightly with each other and prevent erosion in the soil so if the moisture becomes half in the soil then the rate of erosion is twice or doubled at constant wind speed.
1 point
Which explanation best identifies the relationship between mitosis and
reproduction? *
Mitosis is a form of sexual reproduction because the daughter cells form from one
single parent cell.
Mitosis is a form of sexual reproduction because the daughter cells are genetically
different from the parent cell.
Mitosis is a form of asexual reproduction because the daughter cells form a new
nuclear membrane after reproduction.
Mitosis is a form of asexual reproduction because the daughter cells are genetically
identical to the parent cell.
In rabbits, straight ears (E) are dominant to floppy ears (e). Two rabbits are crossed, and 50% of their offspring have floppy ears. Which cross represents the genotypes of the parents?
Cells in both plants and animals use ______ to create energy, carbon dioxide, and water, when breaking down glucose in the presences of oxygen.
A. Photosynthesis
B. ATP
C. Cellular Respiration
D. Fermentation
Answer:
C. Cellular Respiration
Answer:
Cells in both plants and animals use ______ to create energy, carbon dioxide, and water, when breaking down glucose in the presences of oxygen.
A. Photosynthesis
How does an organism obtain C6H12O6 and O2 to
undergo respiration?
Answer:
oxygen is given off during photosynthesis as a waste product
Explanation:
this is something that only plants and some algae and bacteria can do. they take sunlight and combined C02 and H20. they create glucose (C6H1206) and oxygen gas (02).
Does Genetic Modified Organism ( GMO ) make an apple bigger?
Answer:
the data only can determine the based on the replica of the fruit.
Explanation:
when fruit is genetically modified it's genetically is copied and the process of growing is sped up. in some since the fruit can change in size due to the result of multiple gene copies.
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ANYONE KNOW THIS?? PLZ LMK ASAP!!
Answer:
assuming this is human it is 46
Explanation:
Which of the following is an advantage angiosperms and gymnosperms have over mosses?
1. they are seed producing so can populate more areas
2. they can photosynthesize
3. they can use oxygen
4. they do not need water
Answer:
they are seed producing so can populate more areas
Explanation:
describe in on way in which the body gets rid of lactic acid
PLEASE HELP ASAP Match each word with the phrase that best defines it.
informal
a statement that is objective or unchanging
fact
done in a way that is friendly or casual
formal
a statement that is subjective or based on
interpretation
topic
done in a way that is suitable, appropriate,
or based on guidelines
opinion
the main point of a given subject
Answer:
fact: a statement that is objective or unchanging
informal: done in a way that is friendly or casual
formal: done in a way that is suitable, appropriate,
or based on guidelines
opinion: a statement that is subjective or based on
interpretation
topic: the main point of a given subject
Match each word with the phrase that best defines it.
1. Fact: a statement that is objective or unchanging
2. Informal: done in a way that is friendly or casual
3. Formal: done in a way that is suitable, appropriate, or based on guidelines
4. Opinion: a statement that is subjective or based on interpretation
5. Topic: the main point of a given subject
What are Phrases?A phrase is a group of words or a singular word which functions as a grammatical unit. For example, the English expression "the very happy boy" is a noun phrase containing the adjective phrase "very happy".
It can be a single word or a complete sentence. Phrases are used to describe the people, things, or events.
There are following types of phrases. They are:
Noun phrase.Adjective phrase.Adverb phrase.Verb phrase.Prepositional phrase.Gerund phraseInfinitive phraseParticipial phraseThus, matching the following words with its phrases
1. Fact: a statement that is objective or unchanging
2. Informal: done in a way that is friendly or casual
3. Formal: done in a way that is suitable, appropriate, or based on guidelines
4. Opinion: a statement that is subjective or based on interpretation
5. Topic: the main point of a given subject
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effect of time on the digestion of starch
Answer:
60 minutes im pretty sure
Scientists study telomeres in order to understand more about
Answer:
They study telomeres to understand the structure of life and death when cells and organs wear out.
Explanation1:
It's the specific DNA of protein structured found a both ends of each chromosome
Explanation2:
Definition: A compound structure at the end of a chromosome.
Which statements describe how traits are inherited? Check all that apply. An offspring always receives different alleles from each parent. An offspring always receives the same alleles from each parent. An offspring can receive different alleles or the same alleles from each par Traits are inherited when proteins are passed from parents to offspring. Traits are inherited when genes are passed from parents to offspring.
Answer:
Traits are inherited when genes are passed from parents to offspring.
Explanation:
that is the definition of family traits
Answer:
An offspring can receive different alleles or the same alleles from each parent
and
Traits are inherited when genes are passed from parents to offspring
Explanation:
When people living on hills put in concrete barriers, plywood fencing, and drainage pipes, they are trying ______________________
Answer: slow erosion down
Explanation: