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4 years ago

Immunoglobulins that attach to and sensitize mast cells and basophils are

Biology

1 answer:

Ugo [173]4 years ago

6 0

Answer:

IgE

Explanation:

Immunoglobulins can be described as antibodies that are found in blood and other bodily fluids of humans and other vertebrate animals. And their major function is that they help identify and destroy foreign substances such as microbes such as bacteria and protozoan parasites.

They are known to be produced by produced by plasma cells (white blood cells).

Immunoglobulins are classified into five categories: IgA, IgD, IgE, IgG and IgM. And are distinguished by the type of heavy chain they contain. IgG molecules possess heavy chains known as γ-chains; IgMs have μ-chains; IgAs have α-chains; IgEs have ε-chains; and IgDs have δ-chains.

In this case, IgE is the immunoglobulin that attach to and sensitize mast cells and basophils.

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How does the diameter of each ripple change as time passes

VLD [36.1K]

The diameter of the ripple changes by the following equation = $\frac{dA}{dt} = \frac{\pi }{2} D . \frac{d(D)}{dt}$

Explanation:

When a pebble or a rock is dropped in the water then the ripples or waves are formed which starts moving radially outward. As the time passes, the radius of the circle increases.

Let D be the diameter of the circle.

$\frac{dD}{dt}$ will be the rate of change of diameter of the circle with respect to time.

Let A be the area of the circle.

$\frac{dA}{dt}$ will be the rate of change of area of the circle with respect to time.

Area of the circle = $\frac{\pi }{4} D^{2}$

So,

$\frac{dA}{dt} = \frac{d [\frac{\pi }{4} D^{2}] }{dt}$

$\frac{dA}{dt} = \frac{\pi }{4} \frac{d[ D(t)^{2}] }{dt}$

Using chain rule,

$\frac{dA}{dt} = \frac{\pi }{4} X \frac{d[D(t)^{2} ]}{d[D(t)]} X \frac{d[D(t)]}{dt}$

$\frac{dA}{dt} = \frac{\pi }{4} . 2D(t) . \frac{dD}{dt}$

$\frac{dA}{dt} = \frac{\pi }{2} X D(t) X \frac{d(D)}{dt}$

$\frac{dA}{dt} = \frac{\pi }{2} D . \frac{d(D)}{dt}$

Thus, the following equation determines the change in area in terms of diameter with respect to time : $\frac{dA}{dt} = \frac{\pi }{2} D . \frac{d(D)}{dt}$

7 0

3 years ago

Kensei Corp. has three strategic business units (SBUs)—pharmaceutical, publishing, and consulting. Its pharmaceutical unit is re

bixtya [17]

Answer:

C) Question marks

Explanation:

Pharmaceutical units, shown in the above question, best fit the category called "question marks". This category includes products that are at the beginning of their life cycle, that is, that have a small and recent market share. Because they do not yet have a clear prediction of their performance, they usually require a large marketing investment to promote sales and therefore do not result in many initial profits.

The term question mark has been adopted to indicate that there is doubt about the product's yield and the feasibility of investing in its development. Care must be taken with the amount of question mark products as they require large investments.

3 0

3 years ago

In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant all

photoshop1234 [79]

Answer:

Genotype of the male parent: YY

Phenotype of the male parent: Yellow

Genotype of the female parent: Yy

Phenotype of the female parent: Yellow

To determine the genotype and phenotype of the offspring, lets make a punnet square:

Y y

Y YY Yy

Genotype of offspring: 50% YY and 50%Yy

Phentype of offspring: All yellow plants

The results of the Punnet square illustrate that none of the offspring will have green seeds.

5 0

3 years ago

What kind of waves are present during an earthquake? ...

Aleksandr [31]

Answer:

1.The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

2. As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some is transformed into light energy. Light energy, also known as radiation or electromagnetic energy, is a type of kinetic energy that takes the form of visible light waves, such as the light from a match

3. Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

4. Answer: Refraction is the bending of light (it also happens with sound, water, and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms, and rainbows. Explanation: Refraction.

5. The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.

7 0

3 years ago

Mutations can also occur within the regulatory regions of genes. Fragile X is an example of a disorder caused by one such mutati

bixtya [17]

Answer:

Triple repeat expansion.

Explanation:

Fragile X syndrome is the genetic disorder in which the toxic RNA is produced in the body. This mutation is located on the long arm of the X chromosome.

Fragile X syndrome is also known as trinucleotide repeat disorders. The nucleotide CCG is increased in the affected individual from 200 to 4000. The severity of the disease depends on the repeat of CCG nucleotide in the individual.

Thus, the answer is triple repeat expansion.

5 0

3 years ago