a. Why was it important in this case to identify Salmonella Typhi in the feces of the restaurant worker?​

Answers

Answer 1

Answer:

Some other types of Salmonella cause typhoid fever or ... Most people with Salmonella infection have diarrhea, fever, and ..

Explanation:

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Related Questions

Primary sensory afferent axons have widely varying diameters, and their size correlates with the type of receptor to which they are attached. Write down the axons that are the smallest and the slowest?

Answers

Answer:

Smaller and slower axons are those related to temperature, itching and pain.

Explanation:

As you may already know, the axon is an extension of the neuron that has the ability to transmit signals to cells, indicating the nerve impulse that must be felt by the body. In other words, the axons receive a synapse, which is the nerve impulse, and pass this message on to a nerve cell to turn it into a sensation. These axons have varying diameters and the speed at which they transmit messages also varies. According to researches, the smaller and slower axons are those related to the sensation of temperature, itching and pain.

In convergent evolution, unrelated species or different organisms evolve similar traits, even though they live in different parts of the world.

Answers

Answer:

True  

Explanation:

Convergent evolution is a type of independent evolutionary process by which unrelated species evolve similar structural features/traits that fulfill the same or similar functions. Convergent evolution generates analogous structures, i.e., structures that have similar functions in organisms that don't share a common ancestor with such phenotypic traits. An example of convergent evolution is the wings of insects (e.g., butterflies), birds and bats. Conversely, divergent evolution is a type of evolutionary process that creates homologous structures/traits in closely related organisms because such features were inherited from a common ancestor.

Why do v sneeze
plz explain it step by step​

Answers

You’re just releasing air that helps your body get rid of irritants that are in our throat and nose. Such as, pollen, dust, etc.

The fact that _____ is electronegative gives a water molecule a partial positive side.

Answers

Answer:

Oxygen

Explanation:

In a molecule of water ie H20, Oxygen is more electronegative and hence attracts more electrons to itself making Hydrogen partially positive ‍♂️

Which statement explains the goal of using sustainable practices in food
production?
A. It feeds a growing population without harming ecosystems or
humans.
B. It feeds a shrinking human population while still preserving
ecosystems.
C. It keeps a few populations healthy while still generating high
profits
D. It keeps farmers in business by earning them the highest profits.

Answers

Answer: A. It feeds a growing population without harming ecosystems or humans.

Explanation:

Sustainable food production refers to the method of using processes that conserve non-renewable energy, non-polluting, economically efficient, and are also safe for everyone in the society. Also, the needs of the future generation isn't compromised.

The statement explains the goal of using sustainable practices in food

production is to feed a growing population without harming ecosystems or humans. Therefore, the correct option is A.

In a Nitrogen metabolism study, the following data were obtained over the test period:

Nitrogen consumed 175 grams
Total Fecal N 35 grams
Metabolic Fecal N 10 grams
Total Urinary N 80 grams
Endogenous Urinary N 10 grams

Calculate:
a. Apparent Nitrogen digestibility (%)
b. True Nitrogen digestibility (%)
c. Nitrogen Balance (g)
d. Apparent Nitrogen Retention (%)

Answers

Answer:

a. 80%

b. 86%

c. 60 g

d. 34.29%

Explanation:

From the given information:

The apparent nitrogen digestibility (AD) is the ratio of the difference between the consumed nitrogen and fecal nitrogen to the consumed nitrogen.

Mathematically:

[tex]AD = \dfrac{consumed \ nitrogen - fecal \ nitrogen }{consumed \ nitrogen }[/tex]

[tex]AD = \dfrac{175 -35 }{175}[/tex]

AD = 0.8

To percentage, the apparent Nitrogen digestibility = 80%

b. True Nitrogen digestibility is calculated by the formula:

[tex]=\dfrac{consumed \ nitrogen - (fecal \ nitrogen -metabolic \ fecal)}{consumed \ nitrogen}[/tex]

[tex]= \dfrac{175 -(35-10)}{175}[/tex]

[tex]= \dfrac{175 -25}{175}[/tex]

= 0.86

= 86%

c. Nitrogen Balance = consumed Nitrogen - Fecal nitrogen - total uninary

Nitrogen Balance = (175 - 35 - 80) grams

Nitrogen Balance = 60 g

d. Apparent Nitrogen Retention (ANR) is computed as follows:

[tex]ANR = \dfrac{(consumed \ nitrogen-fecal\ nitrogen - total \ uninary )}{nitrogen \consumed }\times 100\%[/tex]

[tex]ANR = \dfrac{(175-35- 80 )}{175 }\times 100\%[/tex]

[tex]ANR = \dfrac{(60 )}{175 }\times 100\%[/tex]

ANR = 34.29%


What was one major effect of urbanization on British society during the
Industrial Revolution?
O A. Urban citizens were forced to drink unsanitary and polluted water.
B. Improved living conditions resulted in a decline in the mortality
rate.
O C. Governments passed strict regulations to reduce the levels of
pollution.
D. Wealthy corporations relocated their factories to rural areas.

Answers

Answer:

B is the answer

B. Improved living conditions resulted in a decline in the mortality

rate.

Hope it helps

The major effect of urbanization is improved living conditions resulted in a decline in the mortality rate during industrial revolution.

What is industrial revolution?

The Industrial Revolution was the shift to new industrial methods in the United Kingdom, continental Europe, and the United States from around 1760 until between 1820 and 1840.

The major effect of urbanization is improved living conditions resulted in a decline in the mortality rate during industrial revolution.

Thus, the correct option is B.

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How can a change to Earth's tilt affect Earth's climate?

Answers

Answer:

It makes seasons more extreme

Explanation:

cual es la causa para que los oceanos se expanden entre 3 y 10 cm por año

Answers

Answer:

El calentamiento global causa que el nivel del mar se eleve, debido a que el hielo en las plataformas continentales se derrite y que el agua del océano se expande al calentarse.

Why are temperatures hotter in locations near the equator?

Answers

Temperatures are hitter around the equator because the equator is the part of the earth that has the most heat from the sun directed onto it unlike the north and south pole that have snow because they are farther away
Most of the heat from the sun is directed onto the equator

Which characteristic is unique to vertebrates?

A) they all have a well-defined skeleton

B) they have no defined organ systems

C) they have bilateral symmetry

D) they have an exoskeleton

Answers

Answer: They have well-defined skeleton.

Explanation:

This is because the vertebrates are uniquely characterised by the presence of the bones.

Answer:

Answer is A)They have a well-defined skeleton

Explanation:

most reasonable answer


3.3
Predict the possible genotypes of offspring if two roan heterozygous
polled cattle were mated​

Answers

Answer:

RR, Rw, Rw, ww

Explanation:

Rw

R

w

RR, Rw, Rw, ww

The phenotypes would be 1 Red, 2 Roan, and 1 white, assuming the colors of roan are white and red and red is dominant white is recessive, hope that helps!

why it is important that we have an understanding of geologic time

Answers

Answer:

Time is a very important variable in geology because the exact timing of spatially separated events allows us to reconstruct the surface and surface conditions of the ancient earth. Geologic time spans are considerably more difficult to comprehend than historical time spans because they are so incredibly long.

One reason is so that we can fully understand how geological processes that seem impossibly slow can produce anything of consequence. For example, we are familiar with the concept of driving from one major city to another: a journey of several hours at around 100 km/h. Continents move toward each other at rates of a fraction of a millimetre per day, or something in the order of 0.00000001 km/h, and yet, at this impossibly slow rate, they can move thousands of kilometres. Sediments typically accumulate at even slower rates — less than a millimetre per year — but still they are thick enough to be thrust up into monumental mountains and carved into breathtaking canyons.

Another reason is that for our survival on this planet, we need to understand issues like extinction of endangered species and anthropogenic (human-caused) climate change. Some people, who don’t understand geological time, are quick to say that the climate has changed in the past, and that what is happening now is no different. And it certainly has changed in the past. For example, from the Eocene (50 Ma) to the present day, Earth’s climate cooled by about 12°C. That’s a huge change that ranks up there with many of the important climate changes of the distant past, and yet the rate of change over that time was only 0.000024°C/century. Anthropogenic climate change has been 1.1°C over the past 100 years, and that is 45,800 times faster than the rate of natural climate change since the Eocene.

Science is concerned with explaining natural phenomena, based on observation, experiments, and evidence. Other questions are best answered by using other forms of knowledge and understanding, such as art, philosophy, or religion. Read each topic and select the topics for Science.
Select ALL that apply.

behavior of alligators

meaning of existence

black holes

deep-sea vents

the Aurora Borealis (Northern Lights)

ghosts, goblins, and other creatures in stories

Answers

Answer:

These:

Explanation:

behavior of alligators

black holes

deep sea vents

the Aurora Borealis

Behaviour of alligatorsBlack holesDeep-sea ventsThe Aurora Borealis

What is natural phenomena?

Any event or an occurrence that happens on its own without any human intervention is termed as a natural phenomena.

Natural phenomena harms the nature as well as life on earth.

Common examples of natural phenomena include thunder storms, earthquakes, landslides, volcanic eruptions, hurricane etc.

Some majestic natural phenomena include blood rain, Northern lights and luminous water in the world.

Natural phenomena can sometimes be destructive in nature and are therefore responsible for loss of lives and property.

It is almost impossible to predict the occurrence of any natural phenomena.

However, the negative outcome of natural phenomena can be managed with special disaster management operation

Thus, natural phenomena could only be observed and understood in science.

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Write any two demerits of local system of measurement.​

Answers

Answer:

) It's easier for younger people to change than older people. (3) It ignores, and devalues cultural differences, expressions, and idioms, based on imperial measurements. For example: can a British pub be truly British without "Pints of beer"? - "Half a litre of beer" doesn't quite have the same ring to it!

1. cannot be used in international trade.

2. cannot be used in scientific experimemts.....

Complete each sentence with the correct word or phrase

a. An action potential reaches the axon terminal causing __________to open.
b. Acetylcholine diffuses across the synaptic cleft before binding to its receptor, which is located on the _____
c. When the membrane potential reaches ________an action potential spreads across the sarcolemma due to the opening of ___________
d. In response to acetylcholine binding, ________ move into the muscle fiber causing the membrane potential to rise.

Answers

Answer:

a). Voltage-gated Ca2+ channels

b). the motor end plate

c). Threshold, voltage-gated Na channels

d). sodium ions

Explanation:

a). The voltage-gated [tex]Ca^{2+}[/tex] channels are the key transducers of the membrane potential that changes into a intracellular [tex]Ca^{2+}[/tex] transients which initiates the  physiological events. When the action potential makes a contact with axon terminal, the voltage-gated [tex]Ca^{2+}[/tex] channels opens.

b). The acetylcholine is the main neurotransmitter of the parasympathetic nervous system. It helps in blood vessels dilation, muscle contraction, and perform many more functions.

It diffuses with the synaptic cleft that is located on the motor end plate of the nervous system.

c). The membrane potential is also known as the membrane voltage or the  transmembrane potential. When it recaches the threshold, the  voltage-gated Na channels opens to spread the action potential across sarcolemma.

d). The sodium ions in case of acetylcholine binding moves to the muscle fiber due to which the membrane potential rises.

Explain how sunlight is the primary source of energy for your own life

Answers

Answer: ok...

Explanation:

The continual input of energy, mostly from sunlight, sustains the process of life. Sunlight allows plants, algae and cyanobacteria to use photosynthesis to convert carbon dioxide and water into organic compounds like carbohydrates. This process is the fundamental source of organic material in the biosphere.

A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented shape characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive, green color characteristic. A pure bred plant with green spherical shaped seeds is crossed with a pure bred plant with yellow dented shaped seeds. State the phenotype and genotype for the parent plants p1 and p2

Answers

Answer:

The correct answer is -

P1: SSyy

p2: ssYY

Explanation:

In the given question it is given that S is the allele for the dominant trait of spherical shape over s allele of dented shape and similarly Yellow pea seed is dominant over y green seed.

It is given that parent 1 or p1 is true breeding for green spherical shaped seeds which means it has two alleles of the same gene that are SSyy (S for spherical and y for green) and parent 2 or p2 is a pure bred plant with yellow dented shaped seeds that would be ssYY.

Which statement accurately identifies the order of tissues pictures left to right in the microscopic image?

a) Epithelial cells, smooth muscle, connective tissue
b) Connective tissue, epithelial cells, smooth muscle
c) Epithelial cells, connective tissue, smooth muscle
d) Connective tissue, smooth muscle, epithelial cells

Answers

Answer:

The correct answer is - d)  Connective tissue, smooth muscle, epithelial cells.

Explanation:

The connective tissues are the tissue layers that protect the outside of arteries and veins. The thick outermost layer of a tunica adventitia and other, made of connective tissues.

The middle layer that has tunica media that s made up of outer connective and smooth muscles in the inner or middle and in the innermost layer is made up of epithelial layer.

As per the image given the statements that describe the tissues from the left to right in a microscopic image are connective tissue, smooth muscles, and epithelial cells.

The connective tissues support and protect and give stricture. The smooth muscles are involuntary non straighter muscles. The epithecal cells that line the surface of the body.

Hence the option D is correct.

Learn more about the statement accurately identifies.

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number of cell that undergo meiotic division to produce a 216 gametes in gymnosperms is​

Answers

meiotic devision this is the answer it might help you

What is a working copy of DNA that leaves the nucleus of the cell? And is read by organelles called that connect amino acids together to make proteins

Answers

Answer:

Messenger RNA

Explanation:

What is a sacrolemma?

Answers

Answer:

the fine transparent tubular sheath which envelops the fibres of skeletal muscles.

Give any two examples for each. 1. Floating plants 2. Underwater plants 3. Fixed plants 4. Emergent plants 5. Insectivorous plants 6. Mangroves 7. Desert plants 8. Coniferous trees 9. Deciduous trees 10. Grass 11. Evergreen trees​

Answers

Answer:

awdwdadadaawdadawdawdadad

Explanation:

awdawdawdadawdawdwaawdawdawdadawdawdwda

Explain the role of enzymes to living organisms

Answers

Explanation:

enzymes create chemical reaction in the body.But they actually speed up the rate of chemical reaction to help support life.. Enzymes is important to our body as it supports in building muscles and destroying toxins..

Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.

Check all statements you agree with regarding the
purpose section of Proposal A.
This project will do a good job revealing the
effect of pesticides on honeybees.
It will help to establish a baseline for historical
comparison, a long-term benefit.
Society will benefit because the project will
indirectly increase the supply of honey and
other agricultural production.
The honey and agricultural industries will
benefit because bees will face fewer threats

Answers

Answer:

And will also reduce unemployment and also reduce morbidity

I am sorry I wanted just wanted point for my answer I am sorry

2
Organism A
Offspring 1
Offspring 2
The diagram below represents a form of cellular reproduction
Fi
As a result of this process, offspring 1 and offspring 2 will have *
(2 Points)

Answers

Answer: A

Explanation:

they will have different traits because they will each have different dna but the same amount of genes

Offspring 1 and offspring two will have the same number of genes but different traits. So, the correct option is A.

How the same number of genes?When a sperm fertilizes an egg cell, each parent contributes 23 chromosomes with genetic information to the offspring. This means that each cell of the offspring's body has 23 chromosomes that contain instructions for their development, including their traits.

What are the different traits?Parents pass on traits, such as eye color and blood type, to their offspring through their genes. Some health conditions and diseases can be passed on. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB, or O.Eye color is based on the amount of pigment melanin in the iris. Every gene has an allele from its parents, so many variations are possible.  Because of this, even if parents have blue eyes, offspring can have brown or green eyes, or one offspring can have blue, and others can have different eye colors from their family.

Thus, we can conclude that two offspring will have the same genes but different alleles.

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Was there any significant difference in appearance between the two bean plants? if so, what was the difference?​

Answers

Explanation:

the plant in the sunlight will receive green color due to chlorophyll and the plant in the dark will have yellow or white color due to the lack of chlorophyll

Answer true or false.

1._____The central nervous system consists of the brain, spinal cord, and nerves.

2._____The autonomic system is part of the nervous system that controls involuntary
actions in the body.

3._____A fish has a more highly developed brain than an ape.

4.______The spinal cord is part of the respiratory system.

5._____The three main parts of the brain in vertebrates are the cerebrum, the
cerebellum, and the brain stem.​

Answers

Answer:

1. False

2. -----

3. False

4. False

5. True

I'm not sure of the 2nd question

Hope it helps:)

Answers:
1. True
2. True
3. False
4. False
5. True

Explanation:
1. This is true.
2. This is true.
3. Apes are highly intelligent creatures will have more brain development than fish.
4. The spinal cord is a part of the nervous system, which is responsible for signaling things. Whereas the respiratory system is responsible for supplying the body with oxygen.
5. This is true.

Dehydration synthesis leads to WICH formation

Answers

Answer:

Polymers...........

Explanation:

What is a working copy of DNA and is read by organelles called?

Answers

Answer:

Working copy of DNA is RNA (Ribonucleic acid)

The nucleus controls all of the cell’s activities, such as growth and metabolism, using the DNA’s genetic information.

Answer:

messenger RNA (mRNA)

Explanation:

The working copy of the DNA is called messenger RNA (mRNA). Its ready by  organelles such as ribosomes to manufacture amino acids to make proteins.

Other Questions
If x follows a normal distribution with a mean of 10 andstandard deviation of 3; find out the followingA) Find the value of x = x such that P(x 5 x) = 5%B) Find the value of x = x such that P(x 2 x) = 1% Given f(x) and g(x) = k-f(x), use the graph to determine the value of k.f(x)g(x)A. -5B. -1/5C. 1/5D. 5 Use the number line to find the measure of SV You are using a hose to fill up your backyard swimming pool on a hot day. Water flows out of the hose at a rate of 6 gallons per minute. In the equation below, m is the number of minutes the hose has been running, and g is the number of gallons of water in the pool.The relationship between these two variables can be expressed by the following equation:g=6m, Identify the dependent and independent variables. Fill in the blank with or = . 11.01-----11.001 What kind of inventory tracking system shows the cost and gross profit margin in each item?Unit-control systemsDollar-control systemsManual tag systemsRadio frequency identification systems what is the measure of each exterior angle of a regular dodecagon? My grandma sent me a birthday card and a present for my birthday." >> Find the direct objects. The cost of one scooter is Rs.52,136. What is the cost of 34 scooters?----------------------------------------------------------------------------------------------------------------------------Rs.17,72,624Rs.1,77,26,204Rs.1,24,56,658 Solve 4(x - 3) - 2x - 1) > 0 1. Our team is considered by some people the best in the league. rewrite each sentence using an active form of verb Resources are not they become. Critically examine Rubab is so friendly. ___________ can make friends with her.a) Something b) Anythingc) Anyone d) Someone Which segment is an angle bisector?V48W48xUY What is the correct form ot the verb in bracket written in the preterite tense.El profesor ________________ en la clase. (Entrar) Dan, Harry and Regan sell cars.Dan sells x cars.Harry sells 5 more cars than Dan.Regan sells twice as many cars as Dan.Write an expression, in terms of x, for the mean number of cars Dan, Harry and Regan sell. Determine the intercepts of the line.y=11x+6 4 Why agricultural sector declared as a critical industry and exempt from the hardest lockdown regulations? was 2. Suppose the measures of the interior angles of a convex octagon are eightnumbers, each separated by a value of 1 degree from its neighbors. Findthe measure of the second smallest angle.118131132.5142None of these answers are correct. pls tell me the correct option