HELP.. _____ immunity occurs when a person's immune system responds to an
antigen.

Answers

Answer 1

Answer:

Adaptive immunity occurs when a person's immune system responds to an antigen.

Explanation:


Related Questions

Use the drop-down menus to complete each statement.
The___controls land for oil and gas development.
The___ensures that federal wildlife laws are followed.
The___protects ecosystems and supervises public access to forests.
The___regulates land used for mining, grazing, recreation, and wilderness.
The___manages monuments, historic sites, seashores, and more.

Answers

Answer:

the answers are

1.bureau of Land management

2.Us Fish and wildlife Service

3.Us forest Service

bureau of Land management

5. National park service

how many electrons are in an atom of zirconium?

Answers

Answer:

There are 40 electrons and protons and 50 neutrons

Explanation:

How are earthworms and fish similar?

Answers

Materials eliciting increased tongue flicking and prey attack in garter snakes were isolated from both earthworm and fish prey. New extraction methods based on chloroform-methanol mixtures are valuable adjuncts to the more typical aqueous preparations. Both high- and low-molecular weight components from earthworms and fish were active. The similarity between the active chemicals in these two classes of prey was established using several methods of analysis.

Answer:

cc

Explanation:

Help 20 points !
*This question is of 4 marks*
So please answer long.
Q. Describe the double circulation in human beings.​

Answers

Answer:Double circulation has two components, pulmonary circulation and systemic circulation. Pulmonary Circulation : It is movement of blood from heart to the lungs and back. Deoxygenated blood of the body enters the righ auricle, passes into righ ventricle which pumps it into pulmonary arch,...

Explanation:

Answer:

During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system more efficient and helps in maintaining constant body temperature.  During a single cycle, the blood goes twice in the heart. This double circulatory system is important because it ensures provision of oxygenated blood to the muscle and not a mixture of oxygenated and de-oxygenated blood. Hence, this system ensures efficient supply of oxygenated blood to the muscles.

Explanation:

Hopefully this helps:)

if light is removed from this environment the fish will eventually die explain why

Answers

Because fish need light to see

A person exhibiting a recessive characteristic must be heterozygous for that gene. True or False

Answers

Answer:true

Explanation: cause heterozygous means that 2 or more of offspring genes are recessive

How does the removal of the top predator in the food chain described affect other organisms?


The frog population will increase


The frog population will decrease


There will be no effect on the frog populaiton.


The number of grasshoppers will increase

Answers

the number of grasshoppers will increase

Answer:

The frog population will increase

Explanation:

The frog population will increase because if the top predators in the food chain described affect the frog organisms that will increase

Choose an organism to use as an example.


Describe the organisms reproductive strategy:



discuss how this strategy is an adaptation for this organism:

Answers

Answer:

I will go with sponges :)

Sponges reproduce asexually. The parent begins budding, when the buds grow to a certain point, they break off and drift with the oceans current to a new place, settle down into the sand or rocks, and start the cycle all over again. Since sponges are stationary organisms (meaning that they cannot travel on their own.) They rely on the oceans current to spread their species across the oceans.

Answer:

I would do a Moon Jellyfish

Explanation:

Moon jellyfish reproduce during two different stages in their life cycle. During the medusa stage, they reproduce sexually by releasing sperm and eggs into the water. The method of reproduction used by jellyfish polyps is known as budding, and it does look like a plant growing a new bud for a flower. The polyp essentially clones itself. The clone buds out of the original polyp and detaches to float freely in the water.

I need help please . Science ~

Answers

Answer:

Archaea Domain

Explanation:

What are some types of biotechnology??

Answers

Types of Biotechnology
Medical Biotechnology. Medical biotechnology is the use of living cells and other cell materials for the purpose of bettering the health of humans. ...
Agricultural Biotechnology. ...
Nutrient Supplementation. ...
Abiotic Stress Resistance. ...
Industrial Biotechnology. ...
Strength Fibres. ...
Biofuels. ...
Healthcare.

Answer and Explanation:

There are a few different types of biotechnology.

One is medical biotech. Essentially, this branch is used to help improve the wellbeings and helaths of people. It involves a lot of DNA in helping to find cures for various diseases. Some examples of advancements in this field are vaccines and antibiotics.

Another is agricultural biotech. In the agriculture industry, farmers are continuously searching for ways to increase crop yield and quality, which delves into the topic of genetic modification and engineering. For example, scientists are breeding certain plants or adding certain genes to make offspring that is hardier and more pest-resistant.

Those are two main types of biotechnology.

When living cells break down molecules of food, what happens to the energy

Answers

Answer:

release energy,form molecules of ATP

The energy is converted in kinetic energy that can become different things

Crossing-over can happen at any location on homologous chromosomes. The farther apart two genes are, the more likely that crossing-over would separate them.


On these chromosomes, which pair of genes would be most likely to be separated by crossing-over: A and B, or A and C? Why?

Answers

Answer:

    The answer is C I believe. Chromosomes usually make a pattern and thats the points were it would make a pattern.

~Paige~

Crossing-over chromosomes.

The crossing of the chromosomes is the swap or the exchange of genetic materials. It takes place in the germline, at the formation of the egg. This is also called meiosis. It aligns with DNA sequencing. The pried chromosomes cross over the other.

Thus the answer is they make a pattern that points in the pattern.

This shows the crossing happens at the homologous chromosome. The farthest apart two genes the most likely they cross each other that would separate them. Thus the option C is correct. They cross at the end., hence is a process called recombination.

Learn more about the chromosomes.

brainly.com/question/19490351.

What type of mutation has occurred?
Below are two sequences of a segment of DNA.
Normal sequence CAT TAC ACC
Mutated sequence CTT TAC ACC
Deletion mutation
Nonsense mutation
Insertion mutation
Substitution mutation

Answers

Answer: substitution mutation
Because T substituted A

what would happen to life if there were no decomposers

Answers

Answer:

The human body will smell and bring mess to the country

Which of the following types of mutations does not belong with the others?

Answers

Answer:

options please

Explanation:

Theres nothing to pick from

why the relative numbers of mitochondria found in a muscle cell would be larger than the relative number found in a fat cell.

Answers

Answer:

The ATP is produced in the mitochondria using energy stored in food. ... Some cells have more mitochondria than others. Your fat cells have many mitochondria because they store a lot of energy. Muscle cells have many mitochondria, which allows them to respond quickly to the need for doing work.

Explanation:

The human
population growth
curve looks like
a -curve
population.

Please help!!!

Answers

Answer:

C

Explanation:

It shows a j looking black line.

Answer:

i think its b good luck hope u get i right

Explanation:

Giving Brainliest to first correct and logical answer.

Explain why Calix having X chromosomes from his mother AND father meant chromosomal rearrangement was not the cause.

Answers

Answer:

Chromosomal rearrangment was not the cause because it wouldn't lead the mass of DNA per cell in Calix to appreciate by 40fg. It also wouldn't explain how he ended up with an additional sex chromosome altogether.

Explanation:

Chromosomal rearrangement occurs when one chromosome receives additional DNA while a different chromosome is missing DNA.

Early during development, organisms as diverse as a human, a mouse, and a bat can appear indistinguishable. All of their embryos look nearly identical,

suggesting that

this is a coincidental resemblance between them

during development, humans go through stages of being a mouse and a bat

these very different species have a shared ancestry with all mammals

similar structures have developed because of convergent evolution

20 21 22 23 24 25 26

27 28 29

Next

Answers

I believe the third answer is correct

Finish answering the box please

Answers

Answer:

the Soviet Union and U.S.A, Gemini VI, commanded by Mercury astronaut Wally Schirra and piloted by Tom Stafford, was supposed to have orbited on October 25, to rendezvous and dock with an Agena target vehicle. But the unpiloted Agena spacecraft blew up during launch that morning, stranding the crew waiting in their vehicle on Launch Complex 19.

which is “older” the chocolate chips or the cookie dough? (Remember: older means formed first)
I need help with that question I been struggling with it and having a hard time pls help me out and is due today

Answers

Answer:

The cookie dough.

Explanation:

The dough has to be made before you can put the chocolate chips in it.

Answer:

chocolate chip

Explanation:

Describe how C. parvum obtains the glucose it needs for glycolysis after it has infected another cell. Explain the role of lactate dehydrogenase in enabling C. parvum to continue producing ATP by glycolysis.

Answers

Answer:

Cryptosporidium parvum is an apicomplexan pathogen that obtains glucose either directly from its host or by the degradation of polysaccharides.

Explanation:

C. parvum only can produce ATP by glycolysis. Lactate dehydrogenase (LDH) is a universal enzyme required to synthesize pyruvate, which is the final product of the glycolysis process. This enzyme has been subject of research to understand the metabolism and evolution of apicomplexan parasites, including C. parvum.

Cryptosporidium parvum is a pathogenic agent that causes the disease cryptosporidiosis. The pathogen obtains glucose directly from the host. It can also obtain by the breakdown of polysaccharides.

C. parvum produces ATP through glycolysis. The enzyme lactate dehydrogenase is used by the C. parvum to generate metabolic ATP. It generates this ATP through the glycolytic pathway. The enzyme allows the conversion of NADH to NAD+. NAD+ is necessary for glycolysis to produce ATP. Metabolic energy plays a crucial role in the growth and proliferation of the pathogen in the host.

Some of the features of C. parvum are:

It consists of a unique lactate dehydrogenase enzyme to yield ATP. It causes the disease in the gastrointestinal tracts. The pathogen is used for research and understand its ability to obtain ATP directly from the host.

Therefore, C. parvum consists of enzyme lactate dehydrogenase that helps in energy production through the glycolytic pathway.

To know more about C. parvum, refer to the following link:

https://brainly.com/question/16360264

What is the origin of the Slate breed?
O
United States
O Mexico
O Asia
O Germany​

Answers

Answer:

2. Mexico

Explanation:

"The blue slate turkey is a rare, heritage turkey; turkeys were first domesticated in Mexico over 2000 years ago."

P.S Only source I could find.

What challenges arise when trying to protect the environment? Select four options.
A)expensive clean energy startup
B)costs threat to the livelihood of many citizens.
C) negative effect on future crop yields
D)expensive to monitor fishing and tourism industries more land available for farming

Answers

Answer:

expensive clean energy startup costs

threat to the livelihood of many citizens

negative effect on future crop yields

expensive to monitor fishing and tourism industries

Explanation:

Answer:

Expensive clean energy startup costs

Threat to the livelihood of many citizens

Negative effect on future crop yields

Expensive to monitor fishing and tourism industries

Explanation:

All of these can affect the PEOPLE  because two include jobs, which is the way people make money, one is the people's homes, were they live, and the other one is negative to companies because they need it to be affordable to continue with it.

Hope this helps comment who said the other answer needs an explanation ;)

Describe the sequence of events during a blood clot.

Answers

Answer: Hemostasis includes three steps that occur in a rapid sequence:

Explanation: 1) vascular spasm, or vasoconstriction, a brief and intense contraction of blood vessels; (2) formation of a platelet plug; and (3) blood clotting or coagulation, which reinforces the platelet plug with fibrin mesh that acts as a glue to hold the clot.

or:

The Blood Clotting Process

Injury. A small tear in a blood vessel wall (for example, from a cut on the skin or an internal injury) causes bleeding.

Vessel constriction. To control blood loss the blood vessel narrows (called constriction), thus limiting blood flow through the vessel.

Platelet plug. ...

Fibrin clot.

Which is the best example of competition in a forest ecosystem?
A colony of bees builds and protects a hive together.
Ticks live and feed on deer.
Wolves hunt and eat rabbits.
Blue jays and finches nest in the same oak trees.

Answers

D) Blue Jays and Finches nest in the same Oak Trees.

Explanation:

This is an example of competition because two species are for the same thing, in this case, oak trees to nest in.

Answer:

Your anwser is,  Blue Jays and Finches nest in the same Oak Trees. Give the other person credit too, please.

Explanation:

Which situation is an example of nonnative species introduction?

A huge volcanic eruption in Washington destroyed many habitats.
A large oil spill in the Gulf of Mexico killed many organisms that lived there.
Horseshoe crabs in the waters of Virginia have been overfished, and their numbers have declined.
Water hyacinths from Asia now grow in the United States and are crowding out animals and other plants.

Answers

Answer:

D.

Explanation:

Nonnative species is defined as the introduction of an alien species, foreign species or exotic species to a new region and affect the native species.

The exampe of nonnative species is introduction of water hyacinths from Asia in the United States which is affecting the native species and making the ecosystem crowdy.

Introduction of non-native species can disturb the balance of an already-established ecosystem by the native species including plants and animals.

Hence, the correct option is D.

Answer:

D

Explanation:

Homeostasis can require the control of many different variables in organisms. Homeostasis regarding internal body temperature is very important for many organisms. How is this different among ectotherms and endotherms?

Answers

Answer:

The term homeostasis refers to balance, where an organism seeks to maintain the balance of the temperature of its organism in order to persist in life.

There are organisms that are considered ectotherms, with which they release heat to the external environment in order to balance said increase in temperature and not denature their own proteins (such as enzymes, structural proteins, receptors, second messengers, etc.). On the other hand, in the case of endotherms, take energy from the medium to increase your body temperature and maintain it, since otherwise you could enter hypothermia.

In the human organism these principles occur both, not simultaneously, but according to the external temperature in which the human is, ectothermic / catabolic processes in heat stages and endothermic or anabolic processes in the cold stage.

Explanation:

In simple words, endotherm is the heat taken from the medium and exotherm or ectotherm is the release of heat to the medium.

This is so simple in objects, but in living organisms these processes have a reason, and that is why we explained above, when looking for a constant temperature these processes are responsible for mediating balance.

How is the virus reproduced during the lysogenic cycle?
A. through reproduction of the host cell
B. by using viral enzymes to reproduce viral DNA
C. by using the cell's enzymes to reproduce viral DNA
D. by breaking the cell open and releasing new viruses

Answers

Answer:

a through reproduction of the host cell

Explanation:

Blood has traveled from the heart to the toes. Which describes the next step
of the circulation process?
A. The blood goes back to the heart to get oxygen.
B. The blood releases oxygen on the way back to the heart.
C. The blood goes through the liver to get oxygen.

D. The blood travels to the lungs to get oxygen.

Answers

The blood travels back up to the heart in a vein, APE.X

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Anyway, I was crossing an empty part of the lot, gaining speed, when a county employee appeared. He said there is a new rule forbidding skateboarding in the parking lot, and official signs would be posted next week.What line reveals the speakers efforts to relate to the audience?A.I was enjoying a great afternoon at Meadowlark Park last week, and then an unfortunate event occurred.B.I think most of you can imagine this, because I have seen you out there doing the same thing.C. Anyway, I was crossing an empty part of the lot, gaining speed, when a county employee appeared.D. He said there is a new rule forbidding skateboarding in the parking lot, and official signs would be posted next week. Competition occurs when more than one organism is trying to use the same resource.True or false? 1. 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