When is the adaptive immune system active?
A All the time
B Only when there's a repeat infection
C Only after pathogens start to multiply
D Only when a person acquires autoimmunity

Answers

Answer 1

Explanation:

Adaptive immunity is an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination. This part of the immune system is activated when the innate immune response is insufficient to control an infection


Related Questions

Organisms are classified as producers or consumers according to the way they *
(1) obtain energy
(2) release wastes
(3) produce offspring
(4) move from place to place

Answers

Answer:

1) obtain energy

Identify the functions of the labeled parts.

Answers

Answer:A=Ureters

B=Urethra

C=Bladder

D=Kidney

Explanation:I think it’s right ,lol

Answer:

A Ureters

B Urethra

C Bladder

D Kidney

Explanation:

if three or more subunits of glucose connect together they create a _________

Answers

The answer to this question is Monosaccharides

Carbon dioxide is carried in blood plasma.
Human blood also contains red blood cells and white blood cells.
Explain how the structure of red blood cells and white blood cells is related to their function.
(6 marks)

Answers

Answer:

Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.

Blood is important for regulation of the body’s pH, temperature, osmotic pressure, the circulation of nutrients and removal of waste, the distribution of hormones from endocrine glands, and the elimination of excess heat; it also contains components for blood clotting. Blood is made of of several components, including red blood cells, white blood cells, platelets, and the plasma, which contains coagulation factors and serum.

What is photosynthesis​

Answers

Answer:

The process of a plant converting sunlight, carbon dioxide and water into food

Explanation:

Hey there!

Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunlight, so we eat plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae, and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the green pigment found in the chloroplasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.

Hope this helps!

Have a great day! :)

inorganic chemicals definition​

Answers

Simplified definition -> the branch of chemistry that deals with inorganic compounds.

Longer definition -> Inorganic science is the part of science which examines the components, and inorganic mixtures. Inorganic science can be characterized just as all science which isn't natural science. Natural science is essentially the investigation of carbon compounds.

In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. However, the distinction is not clearly defined; authorities have differing views on the subject

help will give brainliest

Answers

Answer:

B

Explanation:

Please answer questions for the brainliest.. and stars..

Answers

Answer:

Cool air forms denser clouds, and when the clouds from the side of the mountain with cool air try to go to the side of the mountain with warm air, the clouds warm up and dissipate.

Do mutations always lead to evolution?

Yes, because mutations create adaptations that give a competitive advantage.

No, because most mutations lead to death of the organism.

No, because some mutations happen in the body cells, so they are not passed on.

Yes, because there would be no change in populations without mutations.

Answers

Answer:

Yes, because mutations create adaptations that give a competitive advantage.

Explanation:

Answer:

No, because some mutations happen in body cells, so they are not passed on

Your welcome

heres 15 points
The following diagram represents processes and products in the carbon cycle. In this diagram of the carbon cycle, Location A is the process by which carbon in the atmosphere is converted by green plants into food. © 2011 FLVS What process is occurring at Location A? Combustion Photosynthesis Respiration Weathering

Answers

Answer:

It should be B , Photosynthesis.

Explanation:

The question says something about the process by which carbon in the atmosphere is converted by green plants into food which sounds like Photosynthesis.

So sorry If it's wrong

Answer: Respiration

Explanation: took the test

In the passage, the author explains that biodiversity allows species to have different choices for survival and strengthens an ecosystem by ensuring lots of options for hungry animals. Based on the evidence, what conclusion can be made

Answers

Answer:

The correct answer is - biodiversity is a good thing.

Explanation:

Biodiversity is the variety of types of life including all organisms present on earth or if related to a specific area then the ecosystem. Biodiversity helps in boosting the productivity of the ecosystem and each organism of the ecosystem plays an essential role in it.

The higher the biodiversity more chances of survival of organisms. Biodiversity provides oxygen, water and soil that helps to strengthen the ecosystem.

Define each of the following terms:
Nitrogen Fixation
Ammonification
Nitrification
Assimilation
Denitrification
I was not paying attention please help
( also please do not plagiarize )

Answers

Explanation:

A.) Nitrogen Fixation

Nitrogen fixation is the process by

Which nitrogen is taken from its stable

Gas form (N2) in air and chances into

Other nitrogencompounds (such as ammonia,

Nitrate and nitrogen dioxide) useful of other

Chemical processes.

B.) Nitrification

The process by which bacteria is soil and water

Oxidize ammonia and ammonium ions and form

Nitrites and nitrates. Because the nitrates can be

Absorbed by more complex organisms.

C.)Assimilation

Cultural Assimilation is the process of a group's language

And/or culture coming to resemble those of another group.

D.) Denitrification

The loss of removal of nitrogen or nitrogen

Compounds specifically :reduction of nitrates

Or nitrites commonly by bacteria (as in soil) that

Usually results in the escape of nitrogen into the

Air.

Done^_^ don't forget to mark me to

Brainliest

Penguin wings and swallow wings are _____ structures.
A compound
B analogous
C vestigial
D homologous

Answers

Answer: Analagous

They are different anatomically but perform similar functions.

name the main branches of biology​

Answers

Answer:

Microbiology

Anatomy

Physiology

Explanation:

have a good day!

If you are observing worms, ants, and caterpillars, you are studying a biological _________________.
A. community
B. species
C. individual
D. population
E. none of the above

Answers

If you are observing worms, ants, and caterpillars, you are studying a biological species. Thus, the correct option is B.

What is Biological species?

Biological species may be defined as a cluster of organisms that can reproduce with one another in nature and produce fertile offspring.

A Community may be defined as a group of individuals belonging to different species living in the same area. A Population may be defined as the number of the same species living in the same area at a particular time.

Here, worms, ants, and caterpillars are organisms of different species with different characteristics such as mode of nutrition, reproduction, and response to the environment.

The biological species are considered as an integral part or component of an ecosystem. The greater the biodiversity in an ecosystem, the greater the stability of the species within that ecosystem.

Therefore, if you are observing worms, ants, and caterpillars, you are studying a biological species. Thus, the correct option is B.

To learn more about Biological species, refer to the link:

https://brainly.com/question/985104

#SPJ5

i really need someone to help pleasee

Answers

Answer:

B) Stars form large groupings.

Explanation:

A star clusters are large groups of stars. So option b is basically the same thing.

Hope this helps! :)

B maybe you could be there for when you get home from the mail or something that you could be there and then you could breathe

Why do most living things not leave fossils behind?

Answers

Most living things do not leave fossils behind because we decompose before we are covered by sediments. Fossils are formed when plant or an animal dies and is buried in mud. So this does not tend to happen as often.
They decompose before they are covered by sediments and predators might eat them. ... Fossils are formed when a plant or animal dies in a watery environment and is buried in mud and silt. You just studied 10 terms

A building project caused many small mammals and insects to leave an area. What effect could this have on plant reproduction in that area?
a. less pollination and less seed dispersal
b. more pollination and more seed dispersal
c. more fertilization but less seed dispersal
d. less fertilization and more seed dispersal

Answers

Your answer :


Your answer is c

The function of the large intestine is to....
A. send bile to the small intestine
B. digest protein
C. reabsorb water from waste
D. store food​

Answers

Answer: the answer should be C

Explanation:

Explain how a single fertilized egg can develop into a multicellular organism.

Answers

Answer:

The fertilized egg goes through mitosis to create many identical copies of the original cell then those cells will differentiate into specialized cells of different tissues.

Explanation:

What is Temperature. in your own words but be more detailed about what you say.

Answers

Answer:

Hey mate......

Explanation:

This is ur answer.....

--> Temperature is a measure of how hot or cold something.

Temperature is specifically, a measure of the average kinetic energy of the particles in an object, which is a type of energy associated with motion. ... To answer that question, a physical scientist would measure the temperature of the liquid metal.

Hope it helps!

Brainliest pls!

Follow me! :)

Which of the following
structures is a rigid
barrier found outside
of the cell membrane
in the plant cell?

Answers

Answer: Cell wall

Explanation:

Which of the following describes a way that a person's health can be affected by heredity?

A person with a family history of obesity is less likely to enroll in a weight loss plan.

A person with a family history of obesity is more likely to catch a common cold.

A person with a family history of high blood pressure is more likely to have heart disease.

A person with a family history of cancer is less likely to be screened for cancer.

Answers

Answer:

A person with a family history of high blood pressure is more likely to have heart disease.

Explanation:

The other answers aren't really hereditary. This is the only answer that is directly affected from hereditary.

Can some one help me :(.

Answers

Answer:

have a good day, hope this helps :)

Explanation:

hi! just saying that if you look up your question, this answer pops up: Aprocess called pollination...

All the following actions will help prevent injury when operating equipment on a farm EXCEPT

Answers

Answer is A
Others seem to be basic injury prevention activities

A cube is measured and has all sides that are 2 cm long. What is the
VOLUME for this cube?

8

24

3

Answers

Answer:

ans is 8..

Explanation:

We know cube has 6 sides..

[tex] \sqrt{6} = 3[/tex]

Then we get that ..

Volume of a cube is s³..

=> side =2cm

=> V = 2³

= 8


The diagram above represents the rock cycle. According to this diagram, metamorphic rock is formed by

Answers

the answer is heat and or pressure

Answer:

heat and/or pressure

Explanation:

Blood pressure decreases below normal levels. Blood flow to the heart decreases. Heart is unable to pump as much blood. Blood pressure decreases even more. This is an example of _____ feedback. Multiple choice question.

Answers

Answer:

its called systolic heart faliure or heart faliure with reduced ejection fraction

Reproductive isolation occurs when

A- some catastrophic event greatly reduces the size of the population

B- The gene pool of different populations have become very diversified

C-members of different populations can no longer meet successfully

D-small numbers of individual moves and starts in new population

Answers

Answer:

The correct answer is - C. members of different populations can no longer meet successfully.

Explanation:

Reproductive isolation is the process that occurs when two or more species or populations are not able to interbreed. The mechanisms or properties that are used to preventing individuals of separate species from mating called Reproductive isolation mechanisms.

The different barriers can cause this reproductive isolation such as different mating seasons. These barriers could be behavioral or temporal or ecological isolations.


5.2. Suggest how ecologists used the data in the graphs to calculate the total volume
of water used by a tree in 24 hours.

Answers

Answer:

When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.When a long-term environmental change occurs, certain individuals in a population will be better adapted for the new environment than others. These individuals will be more likely to survive and pass on their traits to their offspring. Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.

Explanation:

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