A diagnostic test for tuberculosis (TB) involves injecting antigen (from the bacterium that causes TB) under the skin and then waiting a few days for a reaction to appear. This test is NOT useful for diagnosing TB in AIDS patients. Explain why

Answers

Answer 1

Answer:

This test is called TB Skin Test.

Some people who are infected with both HIV and TB bacteria will not react to the TB skin test. This is because the immune system is not working properly. Anyone who is HIV infected and has a negative skin test should also have other medical tests, if they have symptoms of TB disease.


Related Questions

What are to two types of gametes?A gamete is also known as?
What is the process called when the fusion of gametes create a zygote?Is a zygote a diploid of haploid cells?​

Answers

Answer:

What are to two types of gametes?

Sperm and Egg

A gamete is also known as?

Sex cells

What is the process called when the fusion of gametes create a zygote?

Fertilization

Is a zygote a diploid of haploid cells?

Diploid

-TheUnknownScientist

Answer:

types of gametes is sperm

gamete is also known as sex cells

the process called when the fusion of gametes create a zygote is fertilization

Which part of the heart are the pacemaker cells found in?

Answers

Answer:

It is located in the upper wall of the right atrium of their heart

Explanation:

The peacemaker cells or sinoatrial node are specialised cells located in the upper part of the right atrium which is one of the heart chamber at the junction of superior vena cava and it is responsible for producing electrical impulses that makes the heart to beat.

because the moon has little gravity it can't _____​

Answers

Answer:

no puede ser habitado por los seres humanos

Explanation:

por la gravedad

Complete the paragraph by applying the laws of conservation of energy and matter to the interactions between Earth’s subsystems.

According to the law of conservation, both energy and matter are ____1______
in natural systems. Earth as a whole is a ____2______ system, in which energy and matter can move from one subsystem to another.
As energy and matter are transferred between subsystems, different forms of matter and energy interact. For example, during photosynthesis, carbon is transferred from the ____3_____ into the biosphere, while radiant energy from _____4_____ is being converted into chemical energy. During this process, the amount of carbon remains constant, but some of the radiant energy is transformed into ____5_____ energy.

1. Conserved
Created
Destroyed

2. Open
Closed
Unnatural

3. Hydrosphere
Atmosphere
Geosphere

4. the moon
the Earth
the sun

5. Mechanical
electrical
heat

Answers

1. conserved

2.closed

3.atmosphere

4.the sun

5.electrical

Hope this helps fr fr

According to the law of conservation, both energy and matter are conserved in the natural system. Earth as a whole is a closed system, in which energy and matter can move from one sub-system to another.

As energy and matter are transferred between subsystems, different forms of matter and energy interact. For example, during photosynthesis, carbon is transferred from the atmosphere into the biosphere, while radiant energy from the sun is converted into chemical energy.

During this process, the amount of carbon remains constant, but some of the radiant energy is transformed into electrical energy.

What is the Law of conservation?

The law of conservation may be defined as a physical property that can not change in the course of time within an isolated physical system.

Therefore, the blanks are appropriately filled.

To learn more about Radiant energy, refer to the link:

https://brainly.com/question/26393285

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Which one ? Help please! Thank you!

Answers

Answer:

mitochondria

Explanation:

Answer:

The mitochondria

Explanation:

Please help I’ll make as brainliest.

Answers

Answer:

its the second one because genetic engineering is somelike fake

Answer:

B

Explanation: It could be C but Im pretty sure its b

The fight or flight response includes greater heart output and a rise in blood pressure. This response is accomplished by the release of adrenaline, a hormone. Which systems are mainly interacting to create such a response?

A. excretory and digestive

B .muscular and skeletal

C. circulatory and immune

D. circulatory and endocrine

Answers

Answer:

D. Circulatory and Endocrine

Explanation:

One sends hormones to cells and the latter sends them to the bloodstream.

What is the genotype for a person who is heterozygous for Type B blood?

Answers

Answer:

I'm sooooo confused

Explanation:

I am not sure, I’m sorry :(

In a deciduous forest of Maine, there are 300 Falcons living in a certain region at the beginning of the year. Scientists have determined that these Falcons demonstrate exponential growth and that their per capita growth rate is 0.067. What will the population of Falcons be in 5 years?

Answers

Answer:

419 Falcons

Explanation:

P= Poe^rt

P= population at time t = ?

Po = initial population = 300

r= growth rate = 0.067

t = time taken = 5 years

P = 300e^(0.067 * 5)

P = 419 Falcons

3. Which of the following metals is a toxic byproduct of coal combustion?
mercury
uranium
cadmium
silver

Answers

Answer:

Mercury

Explanation:

pls help trulyhelp for 25 point not lying pls help asap

Answers

Answer:

Im not sure what your exactly asking but for the last question just say something along the lines of how Europe was the highest popualtion dessity and Australia has the lowest. Do you need help with the bar graph?

Explanation:

Answer:  You can say that there is sometimes a pattern in the numbers.  In the graph, The density of Africa minus North America's density equals 2, and the density of North America minus South America's density also equals 2.

Sorry, if this didn't help and also if it is not the right answer.

What are some technologies that need fluids to work properly?

Answers

Answer:

Examples of Fluid Technology include: Hydraulics- which exist in cars, planes, robots, etc. Other examples include: Fire Extinguishers, Steam Engines, Water Turbines, etc.

Explanation:

I hope this helps and pls mark me brainliest :)

Where are Earth’s magnetic poles?

Answers

Answer:

Based on the WMM2020 coefficients for 2020.0 the geomagnetic north pole is at 72.68°W longitude and 80.65°N latitude, and the geomagnetic south pole is at 107.32°E longitude and 80.65°S latitude.

Explanation:

Os polos magnéticos são dois pontos da superfície da Terra onde se encontram as suas linhas de forças magnéticas: Polo norte magnético. Polo sul magnético.

Oceanic __________ are deep valleys on the ocean floor, some having depths of over seven kilometers.
A. trenches

B. ridges

C. plains

D. plumes

Answers

it would be trenches

The pistil collects pollen from the __________.
A. seed
B. ovule
C. sepal
D. stamen

Answers

D.Stamen (I think)
The stamen is responsible for the production of the male reproductive structure called pollen while the pistil is responsible for production of female reproductive structure called ovary,
The pistil collects polling from the stamen

Which diagram correctly represents a step in the normal process of human reproduction?
Key
2n = total genetic material of a human cell
n
= one half of the total genetic material of a human cell

Answers

Answer:c

Explanation:

The diagram that correctly represents a step in the normal process of human reproduction is n + n = 2n (Option C).

Meiosis is a reductional type of cell division that produces four daughter haploid cells.

These meiotic haploid (n) cells are known as gametes or germinal cells.

During fecundation, two different germinal cells fuse to produce a diploid zygote.

In conclusion, the diagram that correctly represents a step in the normal process of human reproduction is n + n = 2n (Option C).

Learn more in:

https://brainly.com/question/8253366

Light colored fur is recessive (bb) to dark colored fur. If 35% of the mouse population is light colored, answer the following:

What percent of the population is BB? (Round to two decimal places)


What percent of the population is Bb? (Round to two decimal places)


What percent of the population is bb? (Round to two decimal places)


What is the frequency of the single dominant allele B? (Round to two decimal places)


What is the frequency of the single recessive allele b? (Round to two decimal places)

Answers

Answer:

What percent of the population is BB? (Round to two decimal places)  → 17% BB   What percent of the population is Bb? (Round to two decimal places)         → 48% Bb   What percent of the population is bb? (Round to two decimal places)    → 35% bb   What is the frequency of the single dominant allele B? (Round to two decimal places) → 0.41   What is the frequency of the single recessive allele b? (Round to two decimal places) → 0.59

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

Which process must occur for clouds to form?
(1) conduction (2)erosion (3) precipitation (4) condensation

Answers

Erosion for the sky white

What is the answer to this?

Answers

there is not picture

Please help and no file
What is activity A title?

Count: Chromosomes 1 through 22 are called autosomes. Examine the karyotype you have created.
How many total autosomes do human cells have?
How do you know that it is a male karyotyping?
Compare: In the SIMULATION pane, make sure Subject A is selected. Click on and drag one of subject A’s chromosomes to the area labeled Identify. Use the arrows to compare the chromosome you picked with chromosomes 1 through 22 and also with X and Y.
Which chromosomes did you select

Answers

Answer:

The correct answer is -

Activity is the study of human karyotype

There are 22 autosomes

The sex chromosome has one copy of the X chromosome and one copy of the Y chromosome.

Explanation:

During which period of geologic history did the earliest birds appear on earth

Answers

Explanation:

in Cretaceous period,the earliest birds appeared on the earth.

What is the
the function of insulie ?​

Answers

Answer:

Insulin is an anabolic hormone that promotes glucose uptake, glycogenesis, lipogenesis, and protein synthesis of skeletal muscle and fat tissue through the tyrosine kinase receptor pathway.

Explanation:

Insulin is one of the essential hormones for controlling the blood and energy absorption. Insulin is also a chemical messenger that allows cells to absorb glucose which is a form of sugar which you should know that the pancreas is an organ behind the stomach that is main source of insulin in the body

Which type of land formation would NOT occur at a convergent plate boundary of two
oceanic plates? ( plz help ASAP) :(

Answers

Answer:

island arc im prettu sure

Explanation:

Identify where erosion dominates in a mature stream
A. Fairly equally horizontally and vertically
B. Vertically
C. Horizontally

Answers

Answer:

I think its C. but i could be wrong. I hope this helps u

Explanation:

Why do scientists often use bacteria to produce medicines?

Answers

scientists have ways to ensure that the bacteria make the proteins in large amounts. For these reasons, bacteria can function as 'protein factories', producing medically important proteins and others.

Scientists often use bacteria to produce medicines because of their easy use, genetic manipulability, and genetic ability to produce medicine.

What are the characteristics of bacteria?

Scientists often use bacteria to produce medicines because bacteria grow quickly and can be cultured in large quantities. This makes them a cost-effective option for production of large amounts of medicine.

Bacteria also have a simple genetic makeup that is easy to understand that allow scientists to easily produce proteins. Some bacteria have the ability to produce natural compounds containing medicinal properties, such as Streptomyces produces several antibiotics that are used in medicines.

Bacteria can also be genetically engineered to produce new compounds that can be used as new medicines. Bacteria are highly versatile for production of wide range of medicines.

Therefore, bacteria are used for producing medicines because of easy use, genetic manipulability, and genetic ability to produce medicine.

Learn more about bacteria here:

https://brainly.com/question/8008968

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The thermal energy of an object decreases. Which measurement of the object will change?

Answers

Answer:

temperature

(and kinetic energy ? ? maybe)

let me know if its right

Explanation:

the polysaccharide that occurs in the woody parts of older plants​

Answers

Answer :cellulose

Explanation:

Write the energy transformation for what happens when we eat a plant.

Answers

through a process known as photosynthesis. Most of this energy is stored in compounds called carbohydrates. The plants convert a tiny amount of the light they receive into food energy.

PLEASE HELP ASAP!!! thx!


Part 1: Which process does arrow A represent?
Part 2: Which type of energy transformation does arrow A represent?
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.

Use complete sentences to explain your answer. (10 points)

(LOOK AT THE PIC BELOW)

Answers

Answer:

Part 1. Process A represents photosynthesis because the solar energy is being transfered to the plant. Part 2. It represents  solar energy being treansferred. Part 3. This process is the recycling of carbon because you can see that photosynthesis, plant and animal respiration, and combustion are all occuring.

Explanation:

Someone PLEASE HELP!!!

Answers

Answer in link




Brainlysmarts.com






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