when someone’s immune system overreacts to something harmless it’s called

Answers

Answer 1
An allergic reaction

Related Questions

why should we not view lactose intolerance as a disease in adult humans?

Answers

Answer:

Because lactose intolerance isn't a disease, it just mean the individual's stomach isn't able to digest the lactose found in milk.

Explanation:

Mannitol salt agar (MSA) only allows the growth of halophiles. Among the halophiles, mannitol fermenters release acid that turns the pH indicator yellow; mannitol nonfermenters leave the medium red. Onto MSA you inoculate a halophilic mannitol fermenter, a nonhalophilic mannitol fermenter, and a halophilic mannitol nonfermenter. Thus, the medium is acting as a __________ medium.

Answers

Mannitol salt agar can act as both a selective and differentiating medium. A selective medium is one in which inhibits the growth of a particular organism, and allows others to thrive in said conditions. In this case, MSA favors halophilic organisms. MSA is also a differentiating medium because of the mannitol content. Mannitol is a sugar and mannitol fermenters, like s. saprophyticus, use mannitol and release acid as a byproduct. The pH indicator within the agar changes from red to yellow.

true or false? the endosperm in a seed develops into the embryo.

Answers

Answer:

the answer if false

Explanation:

the endosperm in a supply for the embryo

What layer of skin is superficial to the dermal papillae?

Answers

Answer:

papillary layer

Explanation:

The papillary layer is the superficial layer of the dermis that projects into the stratum basale of the epidermis to form finger-like dermal papilla

Number of gametes produced after meiosis:The diploid reproductive cell is a (n):

Answers

Answer:

Four haploid cells.

Explanation:

These reproductive cells are produced through a type of cell division called meiosis. During meiosis, a diploid parent cell, which has two copies of each chromosome, undergoes one round of DNA replication followed by two separate cycles of nuclear division to produce four haploid cells.

Hope this helps! Brainliest?? Anyways have a great day! :))

HELP ME I NEED TO KNOW THIS PLEASEEEEEE (GIVING BRAINLIEST)

Match the organs to the system with which they are most closely associated.


Question 10 options:


cranium



small intestine



kidneys



lungs



arteries





spinal cord



adrenal gland


1.

Digestive


2.

Skeletal


3.

Endocrine


4.

Nervous


5.

Muscular


6.

Cardiovascular


7.

Excretory


8.

Respiratory

Answers

Answer:

cranium: skeletal system

Small intestine: digestive system

Kidneys: excretory system

Lungs: respiratory system

Arteries: cardiovascular system

Spinal cord: nervous system

adrenal gland: endocrine system

Explanation:

Answer:

cranium=2

small intestine= 1

kidneys=7

lungs=8 (maybe 6)

arteries=6(maybe8)

spinal cord=4

adrenal gland=3

According to Kepler's second law of motion, which statement describes the area
swept out py a line between a planet and the sun?
It is constant if the planet moves at a constant speed.
O It increases as the planet moves away from the sun.
O It is constant for equal times.
OIt increases as the planet approaches the sun.

Answers

Answer: It is constant for equal times

Explanation: Just did the assignment

According to Kepler's second law of motion it is constant for equal times. The correct option is C.

What is  Kepler's law?

Kepler's laws of planetary motion, published between 1609 and 1619 by Johannes Kepler, characterize the orbits of planets around the Sun.

The speed of a planet in an elliptical orbit around the Sun is described by Kepler's second law of planetary motion.

It states that a line drawn among both the Sun as well as the planet shuffles equivalent regions in equal amounts of time.

As a result, the planet's speed increases as it approaches the Sun and declines as it fades away from it.

Kepler's laws of planetary motion represent a watershed moment in the transformation from geocentrism to heliocentrism.

They establish the first quantitative link among the planets, together with Earth. They also represent a time when the important questions of the day were changing.

Thus, the correct option is C.

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which molecule is important in regulating cell membrane fluidity?

Answers

Answer:

cholesterol plays a distinct role in determining membrane fluidity.

Cholesterol has a specific impact on how fluid a membrane is. With their polar hydroxyl groups adjacent to the hydrophilic head groups of the phospholipids, cholesterol molecules enter the bilayer.

How does cholesterol regulate cell membrane fluidity?

The phospholipid bilayer's random distribution of cholesterol molecules aids the bilayer's ability to remain fluid under a variety of environmental conditions.

Cells control membrane fluidity by modifying the lipid composition of the membrane. A lipid bilayer's fluidity fluctuates according to temperature. Lipid bilayers become more fluid, porous, or leaky at increasing temperatures (like butter melting on a hot day).

Cholesterol makes the cell membrane less fluid at higher temperatures and more fluid at lower temperatures.

Therefore, cholesterol is the chemical in the plasma membrane that has an impact on the fluidity of the membrane.

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I need to connect each monomer to its polymer

Answers

I really hope it helps you!
Connect the dots

PLEASE ANSWER ASAP BRAINLEST IF BEST ANSWER!
Please expain what is the simple diffusion and what does it do please?

Answers

Answer:Simple diffusion is basically the diffusion of substances through a membrane without needing the help from other substances, such as proteins. An example would be carbon dioxide gas for plants.particle or substance moves from higher to lower concentration

Que avances tecnológicos ha
propiciado la química en la
actualidad

Answers

Answer:

porque contigo yo ya escoji ara mi corazon ta sufri bien simple lang iyo tapidi ela cin titu el cosayoya cinti

the scientific study of all forms of life is called

Answers

Answer:

life science/biology

Explanation:

it literally says it in the name

if you move 50 meters in 10 seconds, what is you speed

Answers

Answer:

5 mps (meters per second)

Explanation:

Divide 50 by 10 to get 1 second.

Which of the following equations best represents conservation of matter?

Option 1: 6H₂O + 10CO₂ -> C₆H₁₂O₆ + 4O₂
Option 2: 3H₂O + 3CO₂ -> C₆H₁₂O₆ + 6O₂
Option 3: 6H₂O + 6CO₂ -> C₃H₆O₃ + 3O₂
Option 4: 6H₂O + 6CO₂ -> C₆H₁₂O₆ + 6O₂

Answers

Answer:

4

Explanation:

A muscle cell has a solute concentration of 2% it is in a solution of 5% solute. What will happen
to the cell?

Answers

Answer:

But now you have two mixtures of different solute concentrations. In comparing two solutions of unequal solute concentration, the solution with the higher solute concentration is hypertonic, and the solution with the lower solute concentration is hypotonic

Explanation:

hope it helps :P

The cell will shrink as the solvent from low concentration solute will move towards the high concentration solute.

What is osmosis ?

Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane from a region of high water potential to a region of low water potential, in the direction that tends to equalize the solute concentrations on the two sides.

Since the solute concentration in the muscle cell is just 2%, and the muscle cell is dipped in a solution that contains 5% solute, the solvent will flow from the muscle cell into the solution. This will result in the muscle cell becoming smaller until the concentration of solutes on both sides is equivalent.

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what are the malleable and ductile properties of metal

Answers

Answer: The malleable properties are properties that affect its ability to be harmed, pressed, or rolled into thin sheets without breaking. It is the property of a metal to deform under compression and take on a new shape. The ductile properties is the ablity to be hammered thin or stretched into wire without breaking.

Explanation: Found on Thoughtco.com

name the three dimensional shape of the dna molecule

Answers

Answer:

The double helix

Explanation:

which statement best describes photosynthesis and respiration

Answers

Answer:

Easy

Explanation:

Photosynthesis turns carbon into oxygen, and respiration puts carbon back in the air

Pensamiento que tenga que ver con la ciencia

Answers

la ciencia es la progresiva aproximación del hombre al mundo real (Max Planck)

what is the bar graph showing

Answers

Answer:

The bar graph didn't exist in your question so ask again by showing bar graph.

a population characteristic, such as a population mean, is called

Answers

Answer:

Parameter

Explanation:

Every Characteristic a population has is called a Parameter

7. during metaphase, spindle fibers are attached to what part of the chromosome?

Answers

Answer:

centromere

Explanation:

How does this question represent the law of conservation of energy that energy cannot be created or destroyed? Consider the role of photosynthesis in your answer.

Answers

You need to put this into your own words, or else your school system will detect you copied from a source named Brainly.

Anyways, the law of conservation of energy is exactly what it says. Energy cannot be created nor destroyed. All they do is rearrange.

Now, for photosynthesis, it's an interesting thing. Photosynthesis takes the energy from the sun's light to produce sugars/carbohydrates. The sun's energy just got reused. It also uses water, which comes from the soil/ground. This simply, reuses the water. During photosynthesis, it also absorbs the carbon dioxide from the air. The carbon dioxide like everything else listed, got reused.

Meaning, energy does not leave. It endlessly works for different purposes. And as you should know, all of the water on the planet has been here since the dawn of time.

Hopefully this makes sense.  Have a nice day!

What are the levels of the energy pyramid called?

Answers

Answer:

Trophic level

Explanation:

A trophic pyramid shows where most of the energy in an ecosystem can be found. Each level is called a trophic level and as you move up trophic levels 90% of the energy is lost.

PLS MARK BRAINLIEST

6. The Edwards Plateau in west-central Texas is home to a diverse group of bats, reptiles,
and birds. How does the biodiversity of the Edwards Plateau affect the sustainability of local
ecosystems?
A. The variety of interactions among the different species helps the ecosystems remain
sustainable.
B. The variety of interactions among the different species prevents the ecosystems from being
sustainable.
C. The uniformity of interactions among the different species prevents the ecosystems from
being sustainable.
D. The uniformity of interactions among the different species helps the ecosystems remain
sustainable.

Answers

Answer:

A.

Explanation:

The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem. A great variety of genes and species means that the ecosystem is better able to carry out natural processes in the face of external stress. Thus, the ecosystem is more sustainable.

Hope this helps!! Brainliest?? Anyways have a great day!! :))

What effect will boiling have on an enzyme's activity?
decreased active site due to changed shape
increased active site due to changed shape
O
less substrate due to increased product formation
o
more product due to increased molecular movement

Answers

Answer:

decreased active site due to changed shape.

Explanation:

With the rising temperature, chemical bonds between molecules of enzymes break resulting to alter the standard shape of enzymes. the active site no longer fits substrate molecules and thus the effect of enzymes decreases.

One of the carbohydrates is a building block of a plant's cell wall. It is

Answers

Answer:

hshdghdisuahzggdhxdhdnndnxhdj dhhdgdhdghdgdgehdyjebdjdhdydjshdjudydjdjdjxjxjdjdjdjdjdjdjdjdhdjdhydudueuhhcgduhxydjyduydjdhdyudjddhhdudusudidhdddfrdiiwousiisosooss

Answer:

cellulose is a building block of a plant cell wall

Explanation:

true or false? mitosis takes place during m phase, which is the longest phase of the cell cycle.

Answers

Answer:

False

Explanation:

Mitosis takes place during M phase of the cell cycle, which is longer than interphase. False. Although mitosis takes place in M phase, M phase is shorter than interphase; cells spend most of their time in interphase.

The thoracic cavity is ____ to the abdominal cavity

Answers

Answer:

The thoracic cavity is SUPERIOR to the abdominal cavity

Answer:

Superior

Explanation:

If you need more help on this assignment

*The Language of Anatomy Review Sheet 1* on Quizlet can help you

what are three functions that lipids serve in plants and/or animals?

Answers

Answer:

Lipids perform three primary biological functions within the body: they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules.

they serve as structural components of cell membranes, function as energy storehouses, and function as important signaling molecules.
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