A lethargic 22-month old black female was presented by her mother to the emergency room at 2:15 am on a Sunday. The child had a history of a runny nose, hoarse cough and low-grade fever (~99F) for the past 48 hours. The mother was concerned about the forced and noisy breathing of the child. The pediatrician examined the child and found cloudy eyes and mild inflammation of the ears, but no overt signs of bacterial infection (no significant changes in the eardrums). The throat of the child was red and coated with mucus. The larynx was swollen and raw.
The physician performed a rapid Strep Test*, and found it was negative. Throat swabs were taken for culture. The physician placed the child in a room with a warm vaponzer for about 30 minutes. This dramatically improved the breathing of the child.
rapid Strep test* is used in the diagnosis of bacterial pharyngitis caused by group A streptococci (GAS), sometimes termed strep throat.
Questions:
1. What is the presumptive diagnosis for this case?
2. Will the throat cultures likely show evidence of Streptococcus pyogenes? How about Staphylococcus aureus?
3. Do you believe that this is a bacterial or viral disease? Why?
4. What further treatment might be indicated for this case?

Answer:

C

Explanation:

2Mg + O2 → 2MgO

got it right on edge 2020

Considering the law of conservation of matter, the correct answer is third option: 2 Mg + O₂ → 2 MgO

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.

So, in the case of Mg + O₂ → MgO, you have:

The coefficients of each molecule below indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

So, balancing the O to obtain the same amount in the reactants and products you get:

Mg + O₂ → 2 MgO

So you have:

Since you still don't have the same amount of Mg on both sides, the equation is not balanced. Therefore, balancing the equation again:

2 Mg + O₂ → 2 MgO

So you have:

Now you have the same amount of each element on each side of the reaction, so the reaction is balanced.

Finally, the correct answer is third option: 2 Mg + O₂ → 2 MgO

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Answer:

A. Greenhouse gases levels would decrease.

Explanation:

Hope this helps!

Answer:

A. Greenhouse gases levels would decrease

Explanation:

Burning fossil fuels like coal, oil and natural gas for energy releases greenhouse gases like carbon dioxide and methane into the atmosphere. These greenhouse gases contribute to global warming by trapping heat in the atmosphere. If humans stopped burning fossil fuels, it would dramatically reduce the amount of new greenhouse gases being emitted. This would allow atmospheric greenhouse gas levels to gradually decrease over time as natural processes absorbed some of the excess gases.

The other answers are not likely results:

B. The polar ice caps would melt more quickly - Stopping fossil fuel combustion would actually help slow the melting of polar ice caps by reducing global warming.

C. There would be less oxygen in the atmosphere - Fossil fuel combustion does not significantly impact atmospheric oxygen levels.

D. Global warming would increase - Ending fossil fuel use would lead to less global warming in the long run by reducing greenhouse gas emissions.

So in summary, the most immediate and likely result of humans stopping fossil fuel combustion would be decreasing levels of greenhouse gases in the atmosphere, as option A states. This would then help slow climate change impacts like polar ice melting.

The ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.

To find the ratio between 92 mL and 3.0 fl oz, we need to convert the units to a common measurement. Let's convert 3.0 fl oz to milliliters (mL).

1 fluid ounce (fl oz) is equal to approximately 29.5735 milliliters (mL).

Therefore, 3.0 fl oz is equal to 3.0 * 29.5735 = 88.72 mL (rounded to two decimal places).

Now we can express the ratio between 92 mL and 88.72 mL:

92 mL : 88.72 mL

Simplifying the ratio by dividing both sides by the greatest common divisor, we get:

46 : 44

So, the ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.

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Answer:

50% from mother 50% from father

Explanation:

Hello kassidyy00, the answer you have is correct. When a baby is consummated it will receive half of its genes from its father and half from its mother. This is due to the 22 chromosome pairings known as “autosomes” each being made up of 2 single stranded DNA segments of equal length.

Hope this helps!

-HM

Answer:

Planting trees, CARBON CYCLE, and cooking with gas do not add Carbon dioxide to the atmosphere.

Explanation:

The atmosphere naturally breathes or decomposes carbon dioxide rocks, whereas forest fire takes place and volcanoes erupt.

The atmosphere is naturally decomposed. Human activities like fossil fuel and forest burning, and cement production, also add carbon dioxide to the atmosphere.

The type of fuel produces greenhouse gases is the Biomass fuels.

Fossil fuels include oil and its derivatives, coal and natural gas, all formed by the decomposition of living organisms.

The main cause of the greenhouse effect is industrialization. Due to this process, the burning of fossil fuels has intensified in recent centuries. The main products of the combustion reaction of these reagents are the gases mentioned above as the main ones for the greenhouse effect.

in this case, biomass fuels are plants, animals and their derivatives are biomass. Use as fuel can be made from its raw form, such as wood, agricultural products and residues, forest residues, livestock residues, animal excrement and garbage. In other words, are fossil fuels and podruces greenhouse gases.

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This is a persuasive essay primarily focused on highlighting the negative impact of ridgetop development on mountain regions.

The essay provided presents a clear argument and aims to persuade the reader about the importance of preserving mountain regions by discouraging ridgetop development. The writer expresses their opinion on the issue and supports it with reasons and evidence.

Overall, the essay combines persuasive techniques, such as presenting arguments, providing evidence, and appealing to the reader's emotions, to advocate for the preservation of mountain regions and discourage ridgetop development.

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Answer:

c

Explanation:

fossil fuels release greenhouse gasses into the atmosphere, not using them would end a lot of that pollution, thus lowering global warming

The Ras superfamily of small GTPases includes the Ras homologous (Rho) protein family.

In reaction to chemical or mechanical stimuli, small GTPases, which are monomeric proteins, act as molecular switches to "on" or "off" signal transduction pathways.

Rho GTPases play an important role in cellular activities such cell migration, wound healing, cell adhesion, cell polarity, membrane trafficking, and cytokinesis because they are key regulators of actin reorganization.

All eukaryotes that have been investigated so far share a high degree of conservation among the 20 Rho GTPases, with Rho, Rac, and Cdc42 being the most prominent. Rac controls the development of membrane ruffles and lamellipodia in response to growth stimuli.

Therefore, The Ras superfamily of small GTPases includes the Ras homologous (Rho) protein family.

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Answer:

Renewable:

- solar energy

- animals

Nonrenewable:

- coal

- minerals

Explanation:

Hope this helps :)

Answer:

Renewable:

- solar energy

- animals

Nonrenewable:

- coal

- minerals

Explanation:

The image represents the continental-continental boundary. When two continental plates collide, that's another kind of convergent plate boundary. The continental lithosphere is very thick and has a low density. The continental lithosphere cannot subduct. So when two mainland plates impact, they simply crush together.

Plate tectonic boundaries come in three varieties: plate boundaries that are transformed, divergent, and convergent. The three primary types of plate boundaries are depicted in this image: transform, convergent and divergent.

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The cell membrane's inside is hydrophobic, meaning that water won't cling to it. In order to effectively separate fluid inside the cell from fluid outside the cell, phospholipids form a two-layer cell membrane.

Large hydrophilic polar or ionic molecules find it difficult to pass through the phospholipid bilayer. The cell membrane prevents the passage of any size charged atoms or molecules.

While the tails (the lipid component) are non-polar, the heads (the phospho part) are polar. The tails, which face the inside of the cell membrane, are "hydrophobic" (fearful of water), whereas the heads, which make up the exterior and inner linings, are "hydrophilic" (lovers of water).

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FFA provides the next generation of leaders who will change the world. FFA makes a positive difference in the lives of students by developing their potential for premier leadership, personal growth and career success through agricultural

Answer:

FFA's soul purpose is to making a positive difference in the lives of their students by developing their learning for premier leadership, personal growth and career success through agricultural education.

Explanation:

As a member I believe that all together FFA's purpose is to prepare there children for the real world. and to establish that there are some bit's of fun that can come out of it as well.  

All of the options are chemical approaches to control micro-organism excepts: B Disinfectants

19. The scientific name for modern man is: B. Homo sapiens

20. kingdoms are prokaryotic organisms placed D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm

22.  taxonomic groups contains closely related organisms A. Genus

23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium

24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi

25. Ecology is a biological science that deals with except: D. none

26. The organism that are consumer is D. Scavengers

Disinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.

Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.

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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants

19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens

20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm

22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class

23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium

24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population

25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none​

26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers

The gravity of Jupiter is 2.4 times greater than the Earth's gravity and has the highest gravity as compared to other planets which is approximately 24.79m/\(s^2\).

Gravity may be defined as the force of attraction that might attract any particles or bodies towards itself.

If the solar system only contained Jupiter, Mars, Earth, Mercury, and Neptune, it might cause an orbital collision with those planets. Due to its high gravity, it is called the vacuum cleaner of the solar system.

Therefore, it is described above.

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Wind energy is clean and prevalent across the United States.

This is referred to as the type of energy which is used to produce electricity through the conversion of the kinetic energy of air in motion and it is a renewable source which makes it an ideal source.

It is used for various purposes such as in wind turbines as it requires the harnessing of energy from the wind using mechanical power to spin a generator and create electricity used to power various types of appliances and devices.

It is a clean and renewable energy source in the United states and is very prevalent due to the strong pressure gradient force and atmospheric pressure variations which is therefore the reason why it was chosen as the correct choice in this scenario.

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Answer:

if black feathers are the recessive gene than there is a 0% of black feathers and if its dominate than there is a 100% chance of black feathers

Explanation:

     b     b

w   bw  bw

w   bw  bw

The two genes involved in determining body color and wing shape are likely assorting independently. This means that the inheritance of one gene does not affect the inheritance of the other gene, and the traits are inherited separately.

The parental cross between true-breeding flies for ebony body and vestigial wings and true-breeding flies for gray body and long wings produced F1 offspring that all had gray bodies and long wings. When the F1 offspring were crossed, the resulting F2 offspring showed a 9:3:3:1 phenotypic ratio, which is consistent with the inheritance of two independently assorting traits that are both determined by two alleles each. The 9:3:3:1 ratio is obtained when two heterozygous individuals (AaBb x AaBb) are crossed, where A and a represent the alleles for body color and B and b represent the alleles for wing shape. The phenotypic ratio is 9: A_B_ , 3: A_bb or aaB_ , 3: aaBb , and 1: aabb.

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Answer:

It is B

Explanation:

A statement based on repeated experiments and observation that can predict what will happen

a scientific explanation of a law is a statement based on repeated experiments and observation that can predict what will happen. Hence option B is correct.

Scientific laws, often known as rules of science, are assertions that explain or predict a variety of natural events based on repeated tests or observations. In several circumstances (approximate, exact, wide, or limited), the term law is used differently across all domains of natural science (physics, chemistry, astronomy, geoscience, biology). Laws are derived from facts and can be further refined through mathematics; in all cases, they are founded on empirical evidence, either directly or indirectly. It is widely assumed that they implicitly reflect, though do not overtly claim, underlying causal linkages in reality and are found rather than constructed.

Physics laws are, by definition, stated facts that have been inferred and drawn from empirical data. Simply said, the world around us operates in a specific manner, and physical laws are a means of categorizing that operation.

Hence option B is correct.

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By definition, a food chain represents a single pathway by which energy and matter flow through an ecosystem. This means that a food chain shows the eating patterns in an ecosystem. Food energy flows from one organism to another. We can represent this flow using arrows. The arrows are used to show the feeding relationship between the animals. In fact, the arrow points from the organism being eaten to the organism that eats it.

We can conclude that the correct answer is:

The food chain describes who eats whom in the wild. This means that a food chain shows the eating patterns in an ecosystem. Then, the food energy flows from one organism to another. We can represent this flow using arrows. The arrows are used to show the feeding relationship between the animals. In fact, the arrow points from the organism being eaten to the organism that eats it. On the other hand, organisms in food chains are grouped into categories called trophic levels. these levels are divided into producers (first trophic level), consumers (second, third, and fourth trophic levels), and decomposers.

Answer:

B. They wilt and die

Explanation:

During transpiration, the sun evaporates water from the plant. If too much water is lost, the plant will wilt and die.

1) The scientific method can be used to find  out which laundry detergent is most effective in removing stains.

2) Not all scientific inquiries follow the scientific method across all the steps because some scientific investigations involves observation in a natural setting.

By making observations, formulating hypotheses, carrying out experiments, collecting data, and drawing conclusions, the scientific method is a methodical technique to answering questions or addressing problems. It can be used to provide answers to queries in a variety of everyday situations.

Let's imagine, for instance, that you want to know which laundry detergent is best at removing stains. This can be ansewed by the use of the scientific method.

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Dna replication are required for polymerase and ligase. It used as a template for assembling a leading strand of reforming and nucleotides a double helix. It is required for the covalent joining of the incoming nucleotide to the primer.

The important properties of DNA replication are the semi-conservative synthesis of the cellular double-stranded to produce two double-stranded daughter molecules. It sustained dna replication which requires many other enzymes and proteins which assemble into a large complex called a replisome.

It occurs in all living organisms acting which is the most essential part for biological inheritance. DNA replication referred to the biological process of producing two identical replicas of DNA from one original DNA molecule.

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Answer: A) bacteria

Explanation: bacteria is too small to be seen without a microscope and the rest can be seen without a microscope making A) Bacteria  the only correct answer

a) If Grant's speed is less than 10.67 km/h, then Neil's journey was quicker. If Grant's speed is greater than 10.67 km/h, then Grant's journey was quicker.

b) If Grant's speed is 10 km/h, then Neil's journey was quicker by 198 minutes (or 3 hours and 18 minutes).

a) To determine whose journey was the quickest between Neil and Grant, we need to find the time taken by each of them. We can use the formula: Time = Distance/Speed
For Neil, Distance = 36km and Speed = 8km/h. Therefore, Time taken by Neil = Distance/Speed = 36/8 = 4.5 hours
For Grant, Distance = 48km and Speed = c. Therefore, Time taken by Grant = Distance/Speed = 48/c
Now, we need to compare the time taken by Neil and Grant. If Neil's time is lesser than Grant's time, then Neil's journey was quicker. If Grant's time is lesser than Neil's time, then Grant's journey was quicker.

So, we have 4.5 < 48/c
Multiplying both sides by c, we get:
4.5c < 48
Dividing both sides by 4.5, we get:
c < 48/4.5 = 10.67 km/h
b) To find the time difference between Neil and Grant, we need to subtract the time taken by Neil from the time taken by Grant. So, we have:
Time taken by Neil = 4.5 hours (calculated earlier)
Time taken by Grant = Distance/Speed = 48/c
Therefore, Time difference = (48/c) - 4.5
We can convert this into minutes by multiplying by 60:
Time difference in minutes = 60[(48/c) - 4.5]
We know that c < 10.67 km/h (from part a). Let's assume c = 10 km/h (just for calculation purposes). So, we have:
Time difference in minutes = 60[(48/10) - 4.5] = 198 minutes
Note: The actual time difference depends on the value of Grant's speed.

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Explanation:

a variation of traits could be a variation of personality traits? everybody is different? what I do know Is that variation can be inherited or environmental which means that you get it from your ancestors through DNA or you get it from the environment around you and your choices eg a tattoo