1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mamaluj [8]
3 years ago
13

When testing a person's skin for allergens using patch testing, tiny amounts of allergens are placed on stainless steel discs an

d applied to the back. How many hours later is the skin under the discs assessed for reaction?
Biology
2 answers:
Airida [17]3 years ago
7 0

Answer:

48 hours

Explanation:

Patch testing is a method to test the allergic reactions called contact dermatitis caused by the allergens found in the environment the patient is surrounded by like home allergens or work allergens.

To perform the test, the allergens are placed on the metal discs which are pasted on the back of the person with hypoallergenic tape.

Then the discs are allowed to be pasted on the back of the person for about 2 days or 48 hours after which the skin is examined for the allergy reactions caused by an allergen in the form of inflammatory response or hypersensitivity.

Thus, 48 hours is the correct answer.

Jet001 [13]3 years ago
7 0

Answer:

The correct answer is - 48 hours.

Explanation:

Skin patch testing is the process or the testing method that is used to detect allergic dermatitis an individual person could be affected of from the atmosphere around him. In this test the patch with substances to test, in a small discs to skin of a person.

The test substances to the skin under the disc that are then left in place for 48 hours. The skin is then assessed a further 48 hours later for any allergic reaction.

Thus, the correct answer is - 48 hours.

You might be interested in
The rising of bread dough is the result of The rising of bread dough is the result of oxygen being released. carbon dioxide prod
Luba_88 [7]

Answer:

Fermentation

Explanation:

Fermentation is the process whereby carbohydrates are converted to acohol or acid by the activities of some enzymes. During the process of fermentation, carbon dioxide is produced and it is found as tiny pockets of air inside the bread dough. This make it to rise. The alcohol produced evaporates later during the bread making process.

5 0
2 years ago
Phosphorus is very important for living things because living organisms need phosphorus for what?
Lemur [1.5K]
It is apart of cellular DNA an ATP, and is a major component of bones and teeth, it is often only available in limited quantities in the the environment.
4 0
3 years ago
Which feature is common to prokaryotic and eukaryotic cells?
Ilia_Sergeevich [38]
The answer is Cell Membranes.
6 0
3 years ago
Read 2 more answers
Mr. White gives you an empty box and asks you to push it with 10N of force. He then puts all of the class textbooks in the box,
jarptica [38.1K]
The mass of the box increased and the acceleration of the box decreased
3 0
3 years ago
In a particular species of frogs, black spots are a dominant trait and their absence is a recessive trait. In a population of fr
swat32

The correct answer is optionD 134/200.

The frequency of the dominant allele can be calculated by the summation of the frequency of the homozygous individual frequency that has  dominant allele  and half of the heterozygous individuals, as half of the heterozygotes have dominant allele.

The frequency is no of individual of desired trait divided by total number of individual.

The calculation is shown below:frequency of dominant allele=frequency of dominant individual+\frac{1}{2} frequency of heterozygotes\\frequency of dominant allele=\frac{50}{100} +\frac{1}{2} (\frac{34}{100} )\\frequency of dominant allele=\frac{50}{100} +\frac{34}{200} \\frequency of dominant allele=\frac{2(50)+34}{200}\\ frequency of dominant allele=\frac{134}{200}

8 0
3 years ago
Read 2 more answers
Other questions:
  • After which event could you say with most certainty that evolution has occurred?
    5·1 answer
  • The two upper chambers of the heart are separated from each other by the
    7·2 answers
  • Convert 0.37 kilograms to grams. ____ grams
    5·2 answers
  • Me no know the ans, pls hlp meh!
    10·2 answers
  • Like DNA, RNA has<br> bases.
    5·1 answer
  • Explain how water in the soil enters to the root hairs of plant
    12·1 answer
  • Describe the characteristics of the phospholipid bilayer that permit small hydrophobic lipid molecules to pass directly across t
    12·1 answer
  • Create some GREAT SCIENTIFIC game of FREEZE TAG to play in class.
    5·2 answers
  • An Olympic sprinter has just broken the world record for the 100-meter dash. Which process will her body likely use to recover f
    5·1 answer
  • If an organism uses elemental sulfur as its final electron acceptor at the end of its electron transport system, what compound w
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!