Which of these is an example of an adaptive (or specific) immune response?

A.
A person's immune system responds to an insect bite by increasing blood flow to the area and causing it to become inflamed.

B.
A person's immune system recognizes that a bacterial infection is present and signals the hypothalamus to increase body temperature.

C.
A person's immune system recognizes viral particles due to a previous vaccine and creates antibodies to fight off the resulting infection.

D.
A person's immune system responds to dirt entering the eye by increasing tear flow and flushing the dirt out of the eye.

Answers

Answer 1

Answer:

I'm not quite sure but I believe the answer is C.

Explanation:


Related Questions

Dominic made the table below to organize his notes about mixtures. A 1-column table. The first column labeled properties of mixtures has entries has no set composition, must have more than one state of matter, must have more than one substance. What mistake did Dominic make? The title should read “Properties of Solutions” because some mixtures do not have all of the properties listed. There is a definite recipe to make each mixture, so the composition of a mixture is set. Although it is possible to have more than one state, it is also possible to have only one state. A single substance can be used to make a mixture if the substance is composed of more than one element.

Answers

Answer:

Explanation:

what

Help label





Will give BRIANLIST

Answers

Answer:

1=deltoid tuberosity

2=head of humerus

3=medial epicondyl

5=trochlia

4=latral epicondyl

A hydrocarbon having chemical formula C4H8, has one double bond. Identify its class.

Answers

Answer:

This hydrocarbon because it possess at least 1 double bond it would be an Alkene. Alkenes possess at least 1 carbon carbon double bond. It is an example of an unsaturated hydrocarbon.

I hope that's correct!!

in your own words, what is the definition for Lysine?

Answers

It is a amino acid which is a constituent that mostly consists of proteins.

A(n)____is the product of gametes from two different
sources.

Answers

Answer:

I guess the answer is meiosis

Explanation:

Maybe yes or no but am 98% sure so it's ur lucky day. haha

atrial fibrillation, a dangerous form of irregular heartbeat is associated with the intake of _____.

Answers

Answer:

Palmitic acid

Explanation:

Intake of palmitic acid is associated with atrial fibrillation.

Palmitic acid - is a saturated long-chain fatty acid and a straight chain saturated fatty acid with a 16-carbon backbone. Palmitic acid is found naturally in palm oil and palm kernel oil, as well as in butter, cheese, milk and meat. It is a conjugate acid of a hexadecanoate.

Hexadecanoate - is a long-chain fatty acid anion that is the conjugate base of hexadecanoic acid (palmitic acid).

How many glycosidic linkages would be found in a polysaccharide composed of 311 monomers linked together?

Answers

Answer:

310

Explanation:

Who are the units of Newtons named
after?
A. American scientist, Sir Isaac Newton
B. English scientist, Sir Isaac Newton
C. French scientist, Sir Isaac Newton
D. German scientist, Sir Isaac Newton

Answers

C french scientists, Sir lsaac newton
B English scientist Issac Newton was born in England

what is cell wall ?

please help.​

Answers

Answer:

A cell wall is a structural layer found just outside the cell membrane that surrounds various types of cells. It may be robust, flexible, and even stiff at times. It functions as a filtration mechanism as well as providing structural support and protection to the cell.

The process of chewing, smashing, and grinding food in the mouth is called

peristalsis

mechanical digestion

absorption

chemical digestion

Answers

The process of chewing, smashing, and grinding food in the mouth is called mechanical digestion (option B).

What is digestion?

Digestion is the process, in the gastrointestinal tract, by which food is broken down into simpler substances that can be utilized by the body.

Digestion can occur in the following ways;

MechanicallyChemically

Mechanical digestion involves the breakdown of food molecules by physical means such as grinding, chewing, smashing etc.

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1 poi A student draws a diagram of a plant cell. The diagram is 40mm in width. The plant cell is 0.02mm in width. What is the magnification of the student's drawing? A. 0.005 B. 0.08 C. x200 D. x2000 ​

Answers

Answer:

D. x2000

Explanation:

magnification = image(drawing size)/actual size

magnification = 40/0.02

magnification = x2000

The magnification of the diagram is x2000. So, the correct option is (D).

What is Magnification?

Magnification is the process of magnifying something. It enlarge the apparent size and not the physical size. This type of enlargement is certainly quantifiable. It also refers to the action of visually enlarging an object with the help of lenses.

This concept exist in two forms-

1. By microscope

It makes small objects appear large

2. By telescope

It makes a distant object which appear closer and the images are more clear and defined.

The formula of magnification represents the ratio of the height of the image to the ratio of the height of the object.

Magnification = image/actual size

For given example, magnification = 40/0.02

magnification = x2000

Thus, the magnification of the diagram is x2000. So, the correct option is (D).

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Select the correct answer.
What conclusion can you make about the skeletal structure of these two organisms?



A.
They share a common ancestor, but they’re different species.
B.
They’re the same species.
C.
They’re different species with no evolutionary relationship.
D.
The four-legged organism directly evolved from the two-legged organism.

Answers

Answer:

A. They share a common ancestor, but they’re different species.

Explanation:

You cross a red flower with a white flower, and all the seeds result in pink flowers. This is an example of

Answers

Answer:

Di truyền trội lăn không hoàn toàn

Explanation:

Place the tiles in order so that they describe a population undergoing natural selection
Not all tiles will be used

Answers

Answer:

A new species of hawk that preys on rabbits is introduced to the habitatThe hawks have more success in catching rabbits with white fur because they are easier to see in the habitatThe rabbits´ white fur mutate so their fur is tan or brownThe next generation of rabbits has a higher proportion of individuals with tan and brown fur.

Explanation:

Natural selection is an evolutive force that can act favoring an allele or against it, according to how it affects the fitness of individuals. Natural selection selects beneficial alleles and increases their frequency in the population.

When many organisms in a population sharing the same trait die, it is because they did not have good fitness, so they were not adapted to the environment and its pressures. The alleles coding for that trait were not good for the fitness of the animals, so they do not get to survive.

These individuals die before reproducing, so they could not transfer their genetic charge to the following generation. Eventually, the alleles coding for the trait will decrease in the population, probably near zero. Natural selection is acting against this phenotype. Other alleles will be beneficiated, and their frequency in the population will increase.

This change in alleles frequency is what we call adaptation.

Natural selection results in adaptation, which means the increase of the aptitude phenotype. Aptitude is the contribution of each genotype to the next generation.

In many cases, adaptations can be correlated to environmental factors or selective pressures applied by other organisms or habitats.

Let us remember that a mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.  

So, in the exposed example, we are focussing on rabbits populations.  

• The selective pressure or modeling environmental factor is predation by the introduced hawk.

• The rabbits´ response to predation is the survival of only those that carry mutations ⇒ tan or brown fur

Natural selection benefits these mutations.  

Tan or brown rabbits survive and increase their fitness.

How can a scientist determine if two species are obligate mutualists? The scientist should observe the species in the environment to determine the types of interactions that the two species have. Then, the scientist should transplant each species alone to a new area and simultaneously transplant both species together to see if the single-species transplants die. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then add an invading species to see if it outperforms one of the other species. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then transplant both species to a new location to observe if they do better or worse than the individuals in their old location. The scientist should observe the species in the environment, determine the types of interactions that the two species have, and then remove one of the species to see if the other species does not survive.

Answers

Answer:

The scientist should observe the species in the environment to determine the types of interactions that the two species have. Then, the scientist should transplant each species alone to a new area and simultaneously transplant both species together to see if the single-species transplants die

Explanation:

When two species are obligate mutualists, both species benefit one another in such a way that one cannot survive without the other. Hence, in order to find out if two species are indeed obligate mutualists, they should be transplanted together away from other species on one side, and also transplanted individually on another side.

If they are obligate mutualists, the individual transplant would find it difficult to survive and should die in no time while the transplant done together should survive. All other factors being kept constant.

Concerning the above image, what region of the eye contains rods/cones?

A) Sclera
B) Optic Nerve
C) Choroid
D) Retina
E) Other:

Answers

Answer:

Retina

Explanation:

The retina has rods and cones.

Rods help us see dim images and comes help us see bright and colored images.

Can someone help me!

Answers

Answer:

1. Food is broken down

2. Food is mixed

Make me brainliest

1:food is broken down
2: food is mixed

Under which circumstance will a disease not spread beyond a few individuals in a population? If the rate of infection is lower than the rate of recovery, the reproductive ratio of the infection will be less than 1. If the rate of recovery is lower than the rate of infection, the reproductive ratio will be greater than 1. If the primary case infects a large number of people very quickly, the reproductive ratio will be less than 1. If the reproductive ratio is greater than 1, only a few individuals in a population will be infected.

Answers

Answer:

The correct answer is - If the rate of infection is lower than the rate of recovery, the reproductive ration of the infection will be less than 1.

Explanation:

The rate of infection is the chances or occurence of new cases of infection in a particular population over a particular time period and the rate of recovery is the occurence of the recovery of an individual case over a period of time. These two rates determines if a disease or infection is spreading faster or lesser.

The higher the rate of infection to rate of recovery it is more lkely to be spreading rapidally and higher the rate of recovery the infection not spreading beyond few individuals in the population. In the later case, the reproductive ration of the infection will be less than 1.

describe a tulip flower based on its physical characteristics

Answers

Answer:

D)The tulip plant is categorized as a monocot. The statement that best describes the flower based on its physical characteristics is "The tulip plant is categorized as a monocot." Monocots are plants the bears' flowers whose seeds regularly contain just a single embryonic leaf or cotyledon.

Explanation:

Which food contains mostly polsaccharides

Answers

Answer:

food with carbohydrates

Explanation:

they comprises of two or more mono saccharides

In a cell, resembling a factory which organelle best describes the factory job at hand? Answer the following.

1. Job:
Conveyor Belt

Job Description:
Moves the products to the shipping department

2. Job: Assembly Line

Job Description:
Products are created from raw materials on the assembly line

3. Job: Packaging and shipping

Job description:
Packs nutrients and sends them off for distribution

Answers

Answer 3. Packaging and shipping

What is one factor that could account fir a rise int the water table? A.more clouds B.less porous soil C.more precipitation D.more wind

Answers

It’s C. More precipitation

Answer:

I agree that it is C

During what phase is the cell polyploid? Why is it polyploid at this point--what has happened to create this state and why is it important to the process?

Answers

Polyploid is cell which has two or more pairs of homologus chromosomes. There are two basic types of cell division are meiosis and mitosis

True or false? Phototropism only happens after plants move from darkness into the light.
Group of answer choices

False

True

Answers

Answer:

phototropism only happens after plants move from darkness into the light (false)

Answer:

The answer is false.

Explanation:

label the eye, thank you​

Answers

Answer:

L = lens

M = Retina

Explanation:

Hope it is helpful....

Rate each question from 1 to 5 ❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)? ❑How much do you depend on natural ecosystems for the food you eat? ❑How important is preserving natural ecosystems to you? ❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future?

Answers

Answer:

❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?  4

❑How much do you depend on natural ecosystems for the food you eat? 5

❑How important is preserving natural ecosystems to you? 5

❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future? 4

Explanation:

The questions are closely related to ecosystemic services and how humans make use of it. Let us first review theoretical concepts, and then discuss the rating of the questions.

Ecosystem services refer to all the benefits that human beings can get from ecosystems, not only for survival but also for good life quality. There are four types of ecosystem services:

• Provision or supply:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.

• Regulation:

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pest/plague control, etc.

• Cultural:

Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, learn, enjoy spiritual/religious space, and are a source of inspiration. It is considered to be cultural patrimony and the source of scientific knowledge.

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I answered the questions from my personal point of view, and considering 5 as the most important topic, and 1 as the less important. So, from most important to less important is 5, 4, 3, 2, 1.

How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?

Probably, we as species, do not need these activities to survive. However, we need them to have good mental health. These are activities that we enjoy and that produce satisfaction. Whenever we do things that we enjoy our organism secretes hormones that make us feel happy. This feeling is important when people are stress about any personal situation. So, this question does not get the highest rate, but it gets a significant one, a 4.

How much do you depend on natural ecosystems for the food you eat?

Basically, we depend on nature and the ecosystem to get food and any kind of supply. If the ecosystems are damaged and altered, there is a general disbalance, and every form of life is affected. Some species might even get extinct. If we keep damaging the environment as we are doing currently, we will get to the point of not having any supply available to survive. So this is one of the most important questions, which gets the highest rate, a big 5.

How important is preserving natural ecosystems to you?

This question is closely related to the anterior one. It is very important for us as a species to realize that we depend on nature 100%, that we need to take care of it and preserve ecosystems all around the world. With no healthy and equilibrated ecosystems, we do not get to survive. So this is the other question that gets the highest rate, 5.

How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future?

This one is kind of difficult to answer, We could say that we are 100% willing to sacrifice to make sure ecosystems stay unharmed. However, we are so used to consumption, technology, confort, an easy lifestyle, and etc, that would be really difficult for us to sacrifice everything that we are used to. Just imagine yourself giving up your cellphone or your computer. Technology is one of the most polluting industries in the world. But we depend so much on it, that seems almost impossible to imagine us without it. This is why my score for this question is a 4. Personally, I surely would sacrifice too many useful things, but I find it hard to sacrifice some others.  

how are proteins and nucleic acids related

Answers

Answer: Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis

Explanation:

which one of the following substances is not excreted by the human body?


a. carbon dioxide
b. saliva
c. urea
d. salt ​

Answers

Saliva is not excreted by the human body.

Carbon dioxide is excreted by respiration.

Urea is excreted by urine.

Salt is excreted by sweat.

Answer:

the anwer is C. urea is the only one the is not a part of human

Scientists have noted patterns in the Earth's seafloor structures. For example, volcanic ridges are typically located in the center of the oceans, and trenches are typically located along the edges of continents. In addition, seafloor rocks found at the trenches are usually older than seafloor rocks found at the volcanic ridges. Which explanation of the past movement of the Earth's plates is best supported by this information? A. The continents were pushed apart when new crust formed in the center of the ocean and pushed older crust away from the volcanic ridges. B. The continents were separated when new crust that formed at the edges of the continents pushed older crust towards the center of the ocean. C. The formation of new crust at the trenches widened the seafloor and pushed the edges of the continents away from one another. D. The Earth's crust formed at the trenches and moved towards the volcanic ridges to make room for newer crust, pushing the continents apart.

Answers

Answer:

A. The continents were pushed apart when new crust formed in the center of the ocean and pushed older crust away from the volcanic ridges.

Explanation:

The crust is divided into many plates that move over the mantle. Nowadays, there are six different bigger plates and twelve that are smaller. These plates are limited by three types of ridges or borders that differ in the movement they produce.

Boundaries types:

I. Divergent

II. Convergent

III. Transforming

In divergent boundaries, a new crust is created by the rising molten materials coming from the mantle. Two plates separate, and the stream of hot material creates a new seabed between them. It occurs an expansion of the sea bottom. As old plates get separated, the new and young crust instantaneously gets formed. The emerging mantle occupies the space left by the separation of the two plates. This process occurs along with an underwater mountain range, known as the mid-oceanic ridge or divergent ridge. An example of this is the ridge located in the middle of the Atlantic Ocean, extending from Greenlander to the southernmost point of South America.

B.Fill in the blanka with the correct word given inside the box.


clay. water. sticky. loam
oxygen. sand. plants. particles
7.________ is made up of particles that are tightly packed together.
Very fine 8._________ of rocks can hold much water and become 9._________
when wet.While 10.________ is a mixture of sand and clay,this contains the right mixture of particles of silt,sand and clay.​

Answers

Answer:

7=clay

8=loam

9=sticky

10=loam

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the sun has decided that it wants to retire! it has never had a holiday and it works 24 hours adays, 7 days a week year after year. your job is to persuade the sun to continue to workas it is vital to the water cycle. use your persuasive skills to convince the sun not to retire Contrary to popular opinion, CEOs of major U.S. companies come from a wide variety of private universities and state universities, not just a handful of well-publicized MBA programs. What does this fact tell you about sources of power and organizational politics Which of the following disciplines have contributed to leadership research, thought, and study? A fair dice is rolled. Work out the probability of getting a number less than 5. Give your answer in its simplest form. A sum of money earns the interest ar the rate of Rs. 5 per Rs.25 in a year. how many years would it trible itself?a. 5 b. 10c.15 d. 20 If the resistance in a circuit remains constant, what happens to the electric power when the current increases?The power will increase.B.The power will decrease. There will be no power.DThe current does not affect the power. Solve the inequality and express your answer in interval notation x^2 - 12x + 3 Which rates are equal? Choose 2.A. 630 miles per 9 hoursB. 1,320 milesper 24 hoursC. 1,170 miles per 18 hoursD. 455 miles per 7 hoursE. 840 miles per 14 hours PLEASE HELP!!! What is the equation of the line perpendicular to 2x 3y = 13 that passes through the point (6, 5)? Which statement describes a difference between England and France during the late Middle Ages?Unlike English monarchs, French monarchs were not heads of government.The court system in France was much fairer than the court system in England.Medieval French monarchs had more power than medieval English monarchs.Medieval France did not develop an institution that could limit the king's power. Journ Co. purchased short-term investments in available-for-sale securities at a cost of $52,000 on November 25, 2017. At December 31, 2017, these securities had a fair value of $48,800. This is the first and only time the company has purchased such securities.Required:a. Prepare the November 25, 2017, entry to record the purchase of securities.b. Prepare the December 31, 2017, year-end adjusting entry for the securities portfolio.c. For each account in the entry for part 2, explain how it is reported in financial statements.d. Prepare the April 6, 2018, entry when Journ sells one-half of these securities for $26,000. On March 31, 2019, Brodie Corporation acquired bonds with a par value of $400,000 for $425,800. The bonds are due December 31, 2024, carry a 12% annual interest rate, pay interest on June 30 and December 31, and are being held to maturity. The accrued interest is included in the acquisition price of the bonds. Brodie uses straight-line amortization.Required: 1. Prepare journal entries for Brodie to record the purchase of the bonds and the first two interest receipts.2. Next Level If Brodie failed to separately record the interest at acquisition, explain the errors that would occur in the companys financial statements (no calculations are required). Who is sometimes referred to as the Columbus of statistics because his book made a fundamental contribution by attempting to demonstrate the quantitative characteristics of birth and death data Gray London is a retired race car driver who helped Dale Earnhardt, Jr. get his start. He is writing a book and making a video about the early days or Dale Earnhardt. He is trying to decide whether to market these items directly over the Internet or to use intermediaries. To make this decision, he needs to know the pros and cons of each route. Provide that information and make a recommendation to him. the two main function of sweat are a. to keep the body cool and to remove excess protein b. to remove waste products and to cool the body Persuasive arguments form around three components - claim, evidence, and facts.TrueFalse You're doing research for a presentation comparing electric cars to gasoline-powered cars. Which source should you use (Please help)1.what is the most common isotope for element x2.calculate the average atomic mass for element x Mars is about 1.5 times further from the Sun than Earth. Compared to Sun as seen from Earth, the Sun as seen on Mars is Write the range of the function using interval notation.