FILL THE BLANK.
A chronic, local allergy such as hay fever is considered ______. Select one: a. antibody-mediated b. atopic c. systemic anaphylactic d. delayed
Answers
A chronic, local allergy such as hay fever is considered atopic. The correct option is b. atopic .
Atopic allergies are characterized by a hypersensitivity reaction that occurs in response to exposure to specific allergens. In the case of hay fever, it is a localized allergic reaction affecting the respiratory system due to allergens like pollen. Atopic allergies involve the production of IgE antibodies by the immune system, which bind to mast cells and trigger the release of inflammatory mediators.
In summary, a chronic, local allergy like hay fever is categorized as an atopic allergy. This classification highlights the immune system's hypersensitivity response involving the production of IgE antibodies and the release of inflammatory mediators upon exposure to specific allergens. Understanding the nature of atopic allergies helps in identifying appropriate treatment and management strategies for individuals suffering from conditions like hay fever.
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A chronic, local allergy such as hay fever is considered atopic.
Hay fever, a chronic, local allergy, is considered an atopic allergy. Atopic allergies are a type of immediate hypersensitivity reaction that involve the production of immunoglobulin E (IgE) antibodies. When a person with hay fever is exposed to allergens such as pollen, their immune system overreacts and produces IgE antibodies specific to those allergens. These IgE antibodies then bind to mast cells and basophils, which are types of immune cells.
Upon subsequent exposure to the same allergens, the allergens bind to the IgE antibodies on the mast cells and basophils, triggering the release of inflammatory mediators such as histamine. This immune response leads to the characteristic symptoms of hay fever, including sneezing, itching, and a runny or stuffy nose.
It is important to note that hay fever is a localized allergy, meaning it primarily affects the respiratory system. Other types of allergies, such as systemic anaphylactic allergies, can have more widespread and severe effects on the body.
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Related Questions
which member of kingdom protista is the closest relative to the land plants? A) dinoflagellates B) diatoms amoeba spp. C) rhodophytes D) chlorophytes
Answers
The member of Kingdom Protista that is the closest relative to the land plants is:
D) Chlorophytes
Chlorophytes, also known as green algae, are thought to be the most closely related to land plants. This is due to the fact that they share many characteristics with terrestrial plants, such as the presence of chlorophyll a and b, the ability to perform photosynthesis, and the use of cellulose as a structural component of their cell walls.
In fact, some green algae species are so similar to land plants that they are referred to as "proto-plants" at times. It is thought that land plants evolved from a type of green algae, possibly via endosymbiosis, a process in which one organism is taken up by another and they evolve together to form a new organism.
While other Kingdom Protista members, such as dinoflagellates, diatoms, and rhodophytes, perform photosynthesis, they are not as closely related to land plants as chlorophytes.
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Which of the following Kingdoms does not contain Autotrophs?
A. Eubacteria
B. Plantae
C. Protista
D. Animalia
Answers
Answer:
b planted
Explanation:
Kingdom Plantae includes multicellular, autotrophic organisms. Except for a few species that are parasites, plants use photosynthesis to meet their energy demands. Kingdom Fungi includes multicellular and unicellular, heterotrophic fungi.
Animals are heterotrophic animals that belong to the kingdom Animalia. The correct option is D as it is the only one that is not included in autotrophs.
What is a kingdom?On the basis of characteristics such like cell structure, mode of nutrition, mode of reproduction, and body organization, living organisms are categorized into 5 kingdoms: Protista, Fungi, Plantae, Animalia, and Monera.
Animals are heterotrophic animals that belong to the kingdom Animalia. These are included under this category as they are not able to make their own food.
Thus, the correct option is D as it is the only one that is not included in autotrophs.
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b. What two things would need to happen for your hypothesis to eventually become a theory? Look back over the definition of a theory. (2 points
Answers
Answer:
A scientific theory is a broad explanation for events that is widely accepted as true. To become a theory, a hypothesis must be tested over and over again, and it must be supported by a great deal of evidence. People commonly use the word theory to describe a guess about how or why something happens.
Explanation:
as thermal energy transfers occur in the atmosphere and ocean,________ form
A.air bubbles
B.currents
C.jet streams
D.hurricanes
Answers
Answer:
B.currents
Explanation:
Hope this is helpful.
Which ion is a found in a glass of water
Answers
In a glass of water, the most common ion found is the hydroxide ion (OH-) and the hydrogen ion (H+).
These ions are formed when water molecules dissociate through a process called self-ionization or autoionization.
In a glass of water, several ions can be found, originating from the dissociation of water molecules. The main ions present are hydrogen ions (H+) and hydroxide ions (OH-), resulting from the self-ionization of water.
Water molecules can break apart spontaneously into equal concentrations of H+ and OH- ions through a process called autoionization. This occurs when a water molecule donates a proton (H+) to another water molecule, forming H3O+ (hydronium ion) and OH-.
Additionally, other ions might be present in a glass of water depending on its source. For example, tap water can contain various dissolved ions like calcium (Ca2+), magnesium (Mg2+), sodium (Na+), chloride (Cl-), and bicarbonate (HCO3-). These ions come from minerals and other substances present in the water source, such as groundwater or surface water.
It's worth noting that the specific ion composition of water can vary depending on factors like location, treatment processes, and water source. However, the fundamental ions present in water are H+ and OH- resulting from the autoionization of water molecules.
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Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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What would polymer of only two sugars be called ?
Answers
Hope this helps!!
What is the appearance of a plant cell when water is plentiful?
Answers
In thanks to the cell wall, the appearance of a plant cell does not change when water is plentiful and is therefore normal.
A cell wall is a structure on the outskirts of most plant cells. The density of the wall can change from time to time, but this wall is often rigid. This cell wall functions to provide the cell with protection and structural support, as well as help it withstand mechanical pressures.
The cell wall helps the cell in withstanding a form of mechanical pressure known as turgor pressure exerted by the vacuole when the plant absorbs a great amount of water. In this way, the cell wall helps in withstanding water pressures in hypotonic solutions. In addition, it also prevents the shrinkage of the cell in hypertonic solutions from exceeding a certain limit.
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question 4, select all of the things that happened during the reign of terror
Answers
During the reign of terror, the Law of Suspects was enacted, allowing police to arrest anyone who did not consistently support the revolution, and the king's supporters defeated Robespierre's rebellion.
What is reign of terror?Following the establishment of the First Republic, numerous mass killings and other atrocities occurred during the French Revolution's Reign of Terror. The Committee of Public Safety carried out public executions in response to revolutionary fervor, anti-clerical sentiment, and treason accusations.The Reign of Terror was a dark and bloody period during the French Revolution. During the revolution, radicals took control of the government. Anyone suspected of betraying the revolution was apprehended and executed. The French Revolution had officially begun four years prior with the storming of the Bastille.In the pursuit of freedom and liberty by French revolutionaries, the Reign of Terror demonstrated more brutal punishments for counter-revolutionaries and foreign enemies.To learn more about reign tower, refer to:
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Jamarion Smith
What did Juan Ponce de León and Francisco Vásquez de Coronado have in common?
O Neither found gold in the areas where they searched.
O Neither wanted to spread their religion to the native peoples.
O Both found climates that were desirous for future colonizations.
O Both consistently battled the native peoples in the places where they settled.
Answers
help please I'm stuck
#life sciences
Answers
hope this helps
I do think that they close to not allow too much of either water or air from entering.
the hollow tube allows water to flow easily.
https://www.bbc.co.uk/bitesize/guides/z28g7p3/revision/1
The cells that make xylem have an ability to adapt according to the environment. They open up, lose their ends to make a hollow vessel, and they get strength by lignin, it also supports the plant.
What is xylem vessel?Xylem vessel is a vessel type structure present in plants, that hold water for the plant. They are small vessels, and they loose and tight according to the requirement of water of the plant.
Its main function is to transport water and nutrition. It also supports the plant and give strength to tissues and stems.
Thus, the cells that make up xylem have the ability to adapt to their surroundings. They open up, shed their ends to form a hollow vessel, and lignin provides strength and support to the plant.
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A lake has very deep water at the bottom, in the benthic zone. Why is it more difficult for plants to live in the benthic zone of this lake than in the limnetic zone
Answers
Answer:
See the answer below
Explanation:
It is quite difficult for plants to survive in the benthic zone due to the limited penetration of light in the zone when compared to the limnetic zone. The limnetic zone is a well-lit area of a lake or pond while the benthic zone represents an area around the bottom of any water body - marine or freshwater.
Light is an important factor for plants because the light is necessary for photosynthesis - a process through which plants get their foods. Hence, due to limited light in the benthic zone as opposed to the limnetic zone, plants would find it easier to survive in the latter compared to the former.
Place the structures and characteristics into the appropriate category characterizing fungi or other eukaryotes.
Answers
Sure! Here are some structures and characteristics that can be used to differentiate between fungi and other eukaryotes:
Fungi:
- Chitin cell walls
- Heterotrophic
- Reproduce through spores
- Can form mycelium
- Secrete enzymes to digest food externally
Other eukaryotes:
- Cellulose or other types of cell walls
- Can be autotrophic or heterotrophic
- Reproduce sexually or asexually
- May have flagella or cilia for movement
- Do not typically secrete enzymes to digest food externally
By placing these structures and characteristics into the appropriate category, we can see that chitin cell walls, spore reproduction, and mycelium formation are characteristics that specifically characterize fungi. Other eukaryotes may have different types of cell walls, different methods of reproduction, and different structures for movement.
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Sure! Here are some structures and characteristics that can be used to differentiate between fungi and other eukaryotes:
Fungi:
- Chitin cell walls
- Heterotrophic
- Reproduce through spores
- Can form mycelium
- Secrete enzymes to digest food externally
Other eukaryotes:
- Cellulose or other types of cell walls
- Can be autotrophic or heterotrophic
- Reproduce sexually or asexually
- May have flagella or cilia for movement
- Do not typically secrete enzymes to digest food externally
By placing these structures and characteristics into the appropriate category, we can see that chitin cell walls, spore reproduction, and mycelium formation are characteristics that specifically characterize fungi. Other eukaryotes may have different types of cell walls, different methods of reproduction, and different structures for movement.
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Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why
Answers
Answer:
Though these genes are recessive, it is still very much possible for the offspring to inherit this, and the lethal gene is no different.
Explanation:
Suppose this animal breeder picked a dog who appeared to be happy and healthy and paired with another healthy dog. One of these healthy dogs may have this recessive lethal gene, though they have not been affected by it, their offspring may be likely to.
Capillaries in the heart keep blood flowing in one direction.
a. True
b. False
Answers
Answer:
A) True.
Explanation:
Capillaries then lead into small veins. Small veins lead to larger and larger veins as the blood approaches the heart. Valves in the veins keep blood flowing in the correct direction.
Hope it helps!
Jason is having problems with his metabolic rate. He cannot seem to burn calories and gains weight even on a severely reduced caloric intake. What endocrine gland is probably not involved in this problem
Answers
thymus is the answer
Jason is having problems with his metabolic rate. He cannot seem to burn calories and gains weight even on a severely reduced caloric intake thymus endocrine gland is probably not involved in this problem.
Basal metabolic rate (BMR) is the number of calories burned when the body is performing its basic life support function. Also commonly referred to as resting metabolic rate (RMR), this is the calories burned by staying in bed all day long.
The endocrine gland is a gland without a conduit in the endocrine system that secretes its product hormones directly into the blood. The main glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testicles, thyroid gland, parathyroid gland, hypothalamus, and adrenal gland.
Your thymus is also part of your endocrine system. Your endocrine system produces and releases hormones that control the functioning of your body. The thymus produces and releases a variety of hormones, including Thymopoietin: Which promotes the production of T cells and directs the pituitary gland to release hormones.
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Cystic Fibrosis is an autosomal recessive disease. A carrier male is married to a carrier female. What is the chance they will have a child with cystic fibrosis?
0 percent
25 percent
50 percent
75 percent
100 percent
Answers
Answer:
25 percent
Explanation:
25 percent 25 percent
The kind of genes an organism possesses is dependent upon the __________
a. type of proteins in the organism’s nuclei
b. sequence of nucleotides in the organism’s DNA
c. number of ribosomes in the organism’s cytoplasm
d. size of the mitochondria in the organism’s cells
Answers
Answer:
B. Sequence of nucleotides in the organism's DNA
Explanation:
The genes within an organism rely on the DNA within those organisms. Different DNA create different genes.
State one similarity and one difference between the responses of tropism and mastic movement.
Answers
Explanation:
The similarity between tropic and nastic movement is - both are the result of external stimulus and the difference between tropic and nastic movement is the direction of the response is not dependent on the direction of the stimulus in the case of nastic movement but in the case of tropic movement, the response is dependent on the moment.
how are elliptical galaxies diffrent from spiral galaxies
Answers
Answer:
While spiral galaxies are bright, elliptical galaxiesare dim. Spiral galaxiesare hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born.
Explanation:
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Mr. and Mrs. S have just married. They are healthy, but the husband's brother has two boys with sickle cell anemia and the wife's sister has the same disease. Sickle cell anemia is a condition in which there arent enough healthy red blood cells to carry adequate oxygen throughout your body. They are considering having children and have sought the advice of a genetic counselor. What are the chances of a child with the disorder?
Answers
Answer: Your welcome!
Explanation:
The chances of having a child with the disorder depend on the genetic makeup of Mr. and Mrs. S. If both Mr. and Mrs. S are carriers of the sickle cell anemia gene, then the chances of having a child with the disorder are 25%. This is because both parents would need to pass on the genetic mutation to their child, and since both have it, there is a 25% chance of passing it on to their child. If only one of the parents is a carrier, then the chances are much lower at 12.5%.
It is important to note that there is no guarantee that a child will or will not have the disorder, as there are other factors that can influence the outcome. It is recommended that Mr. and Mrs. S seek the advice of a genetic counselor to better understand their risks and potential outcomes.
dna polymerase iii ""reads"" a template strand and synthesizes a complementary strand of dna in the ________ to __________ direction
Answers
DNA polymerase III reads a template strand and synthesizes a complementary strand of DNA in the 5' to 3' direction.
DNA polymerase III is an enzyme involved in DNA replication, responsible for synthesizing a new DNA strand during the replication process. It reads a template strand, which serves as a guide, and generates a complementary strand by adding nucleotides in a specific direction. The directionality of DNA synthesis is crucial for accurate replication.
The direction in which DNA polymerase III synthesizes the new strand is referred to as the 5' to 3' direction. This means that the enzyme adds nucleotides to the growing DNA chain starting from the 5' end (where the phosphate group is attached to the 5' carbon of the sugar) and moving towards the 3' end (where the hydroxyl group is attached to the 3' carbon of the sugar). The template strand acts as a template for complementary base pairing, guiding the synthesis of the new strand.
This 5' to 3' directionality is a fundamental aspect of DNA replication. It ensures that the new DNA strand is synthesized in the correct sequence, complementary to the template strand. Additionally, DNA polymerase III can only add nucleotides to the 3' end of an existing DNA or RNA strand, requiring a primer to initiate replication. This primer provides the necessary 3' hydroxyl group for nucleotide addition.
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why did early researchers believe the genetic material was protein rather than DNA.
Answers
Early researchers believed that the genetic material was protein rather than DNA for several reasons:
Proteins were known to be more complex and varied in structure than DNA, and they thought that this complexity was necessary for encoding the genetic information.
At the time, proteins were known to carry out many of the important functions in cells, such as enzymes and structural components, so it was thought that they would be more likely candidates for carrying genetic information as well.
Early experiments on genetic transformation, such as those performed by Frederick Griffith in the 1920s, showed that a non-virulent strain of bacteria could be transformed into a virulent strain by exposure to a heat-killed virulent strain. This led some researchers to believe that the genetic material was a heat-stable substance that could survive the heat treatment, which was thought to be a property of proteins rather than DNA.
However, subsequent experiments, such as those performed by Oswald Avery, Colin MacLeod, and Maclyn McCarty in the 1940s, showed that DNA was the genetic material responsible for genetic transformation. They demonstrated that DNA from the heat-killed virulent strain of bacteria could transform the non-virulent strain into a virulent strain, whereas DNA from the heat-killed non-virulent strain had no effect. This was a key discovery in the history of genetics, and it helped to establish DNA as the primary carrier of genetic information in all living organisms.
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This diagram shows the pathway for fibrinolysis. What should go in the blue box labeled 1? A) Plasmin B) Thrombin C) Fibrinogen
D) Fibrin
Answers
Main answer: The blue box labeled 1 in the diagram for fibrinolysis should be filled with "Fibrin".
Supporting answer: Fibrinolysis is the process by which the body breaks down and removes blood clots. The process starts with the activation of plasminogen, which is converted into its active form, plasmin, by tissue plasminogen activator (tPA). Plasmin then cleaves fibrin, the main protein component of blood clots, into smaller fragments. This leads to the breakdown of the blood clot and the restoration of blood flow to the affected area. Therefore, the blue box labeled 1, which represents the substrate that is acted upon by plasmin in the fibrinolytic pathway, should be labeled with "Fibrin".
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2. Would you be able to get energy from food if there weren’t chemical reactions in your body?
Answers
Answer:
no
Explanation:
we would not get any energy from food because nothing would happen (no chemical reaction)
Answer:
if we eat food we get energy, but if there weren't chemical reaction in your body nothing happens.
Explanation:
Intraoperative Mitomycin versus Postoperative 5-Fluorouracil in High-risk Glaucoma Filtering Surgery
Answers
The study compares the use of intraoperative Mitomycin with postoperative 5-Fluorouracil in high-risk glaucoma filtering surgery.
This study aims to investigate the efficacy and safety of two different approaches for glaucoma filtering surgery in high-risk patients. The two approaches being compared are the use of Mitomycin during the surgery itself and the application of 5-Fluorouracil after the surgery. Glaucoma filtering surgery is a procedure performed to lower intraocular pressure in patients with glaucoma. High-risk patients are those who are at increased risk of surgical failure or complications. By comparing the outcomes of using Mitomycin intraoperatively and 5-Fluorouracil postoperatively, the study seeks to provide insights into the optimal treatment strategy for high-risk glaucoma patients undergoing filtering surgery.
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Why must transcription occur where dna can be found.
Answers
Answer:
because DNA can't leave
Explanation:
look this up, most of the questions on here are can be answered with a quick googIe search
Marsupials are animals that __________. A. are foreign to a particular place B. are native to particular place C. carry their young in pouches D. have no natural predators
Answers
Answer:
C
Explanation:
carry their young in pouches
Answer:
C. Carry their young in pouches
Explanation:
edge 2022
what lead to scientist accepting Mendal's ideas?
Answers
Answer:
well what made them accept his ideas is because of the structure of the table he made and how correlated there where to specific calculations
Hemoglobin binds to oxygen in the presence of protons. Briefly describe what happens when the pH in the solution decreases (starting pH is 7.4), and how this affects hemoglobin’s binding affinity to oxygen?
Answers
Hemoglobin binds to oxygen in the presence of protons. When the pH in the solution decreases, the hemoglobin's affinity for oxygen reduces. This process is known as the Bohr effect.
The hemoglobin molecule consists of four subunits, each containing an iron atom that binds to an oxygen molecule. The binding of oxygen to hemoglobin is influenced by several factors, including pH. The binding affinity of hemoglobin to oxygen is reduced as the pH of the solution decreases. This process is known as the Bohr effect.The Bohr effect is a phenomenon in which an increase in acidity (decrease in pH) or an increase in carbon dioxide concentration causes a decrease in the affinity of hemoglobin for oxygen. When hemoglobin binds to oxygen in the lungs, the pH is higher, resulting in a stronger bond between hemoglobin and oxygen. In peripheral tissues, where oxygen is needed, metabolic activity produces protons and carbon dioxide, resulting in a decrease in pH. This change in pH results in the release of oxygen from hemoglobin in the tissues, where it is needed for respiration.
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