How was penicillin improved?

Answers

Answer 1

Answer:

A number of semisynthetic penicillin derivatives improving the properties of penicillin have been developed since penicillin was first commercialized. Ampicillin, patented by Beecham in 1961, improved the oral absorption of penicillin. Amoxicillin, also patented by Beecham in 1964, further improved oral absorption.


Related Questions

Which group used terrorism in the late twentieth century?

United Nations

Indian National Congress

OPEC

al-Qaeda

99 points plus brainleast please help

Answers

Answer:

al-Qaeda

Explanation:

OPEC is a petroleum organization and the United Nations try to preserve peace and don't look for terrorism. Indian National Congress was striving for peace.

Answer:

Option D) al-Qaeda

Explanation:

Have a great day

Guns, ammunition, medical supplies, and food supplies could not reach Southern cities because of the naval ______.

Answers

During the Civil War, the entire coast of the Southern states was subjected to a naval blockade (barrier) to prevent the South from importing crucial war supplies. This was the primary goal of the naval blockade of the South.

As the importance of sea trade grew toward the end of the 16th century, it became necessary to also cut off the enemy's sea links without taking possession of the particular part of the coast line or port. Blockades were initially limited to coastal fortifications, so they differed only slightly from sieges in land warfare.10 11 The Dutch probably declared the first naval blockade in 1584. In order to prevent supplies from reaching the Spanish troops, the ports in Flemish that were then under Spanish control were declared closed. 12 In point of fact, the declaration of this blockade and subsequent blockades was made solely with the intention of B the Dutch to seize neutral merchant vessels even when those vessels were not carrying goods that belonged to the enemy or were illegal. 13 At the beginning of the 17th century, Hugo Grotius held the view that all goods destined for a blockaded location were subject to capture and seizure regardless of their contraband nature if their de livery endangered the success of the respective enemy port's closure. That was the situation, according to Grotius, when peace or surrender were imminent. 14 State practice, however, does not indicate widespread acceptance of such a restriction at the end of the 16th century or during the 17th century. As a result, one hundred years later, Cornelius van Bynkershoek was able to quickly establish that Grotius's opinion was not in accordance with the treaties and edicts that were already in place or even with reason.

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The United States is a member of _______, the international organization created after World War II to establish peace.

Answers

Answer:

The United Nations

Explanation:

The United Nations is an international organization founded in 1945. Currently made up of 193 Member States, the UN and its work are guided by the purposes and principles contained in its founding Charter.

Answer:

Explanation:

The direct answer is The United Nations which replaced the League of Nations. The UN was created in 1946.

What is the thesis of the Declaration of Independence ?

Answers

The thesis of the Declaration of Independence is that the thirteen American colonies were breaking away from British rule and forming a new nation based on the principles of liberty, equality, and self-government.

The Declaration of Independence, adopted on July 4, 1776, is a statement of the colonists' desire for independence from British rule. It set forth the reasons why the colonies felt compelled to break away from British rule, including a lack of representation, unjust laws and taxes, and other abuses of power by the British government. The Declaration asserts the right of the people to alter or abolish a government that becomes destructive of these ends. The Declaration also states that all men are created equal and have inalienable rights of "life, liberty, and the pursuit of happiness," which became the foundation of the American political system and culture. The thesis of the Declaration of Independence is the foundation of the United States of America and it is considered as one of the most important document in the history of the world.

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Explain how the end of WW1, the Treaty of Versailles, and the Great Depression may have led to the conditions that causes WW2. Need ASAP

Answers

the treaty of versaille caused a decline in germany. Germany was blamed for war, lost land, and had to pay large amounts of reparations. they already had damaged land from WW1. with this and the great depression, germanys economy fell. the Germans were vulnerable and needed someone powerful to rule and regulate germany, to get back to power. hitler promised to get germany back to power and get revenge on the allied powers. and so he tried to do with WW2.

Just say no- How does paragraph 4 contribute to the development of ideas in the text

Answers

Paragraph 4 shows that it is possible to learn anything if you know your feelings and what you want to become.

What is a paragraph?

A paragraph is a self-contained unit of a discourse in writing dealing with a particular point or idea. Though not required by the orthographic conventions of any language with a writing system, paragraphs are a convenient means of organizing extended segments of prose. The oldest classical British and Latin writing had little or no space between words and could be written in boustrophedon.

Ancient manuscripts also divided sentences into paragraphs with line breaks followed by an initial at the beginning of the next paragraph.

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What was rationing and why was it used during WWII?

Answers

Explanation:

Rationing was a means of ensuring the fair distribution of food and commodities when they were scarce. It began after the start of WW2 with petrol and later included other goods such as butter, sugar and bacon. Eventually, most foods were covered by the rationing system with the exception of fruit and vegetables.

Why did the United States intervene in Korea during the mid- twentieth century?

Answers

Answer:

The last choice

Explanation:

Truman adopted the policy of containment, which means "containing" soviet influence and aggression. Thus, the answer is D, leading an international community (UN forces) in response to an act of aggression (North Korea trying to invade and conquer South Korea, backed by Soviet troops)

he Mongol Empire collapsed for a number of reasons. The Mongols were nomads whose customs were suited to a large empire. The Mongols in distant khanates were minorities, and many Mongol rulers in these places . Some places, such as , cooperated with their Mongol rulers, but others rebelled, and the empire eventually fell apart.

Answers

There were many factors that led to the Mongol Empire's demise. The customs of the nomadic Mongols were suitable for conquest but not for governing a vast empire. As minority populations in far-off Khanates, many Mongol kings there adopted local practices.

What caused the Mongol Empire to fall?

In all four of Genghis Khan's khanates, inter-family revolt served as a warning flag before it descended into chaos. Drought, flood, hunger, and the bubonic plague finally contributed to the fall of each khanate as weaker Mongol commanders battled to maintain control.

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- conquering but not ruling

- adopted local customs

- Russia

What is the best credit history?

Answers

To maintain the best credit history a person must pay his/her bills on time by doing that they can gain a good credit score if the credit score ranges from 670-739 then it is considered a good credit score or FICO score. A credit history is a measure of one’s ability to repay debts.

It is recorded in the credit report, which gives detailed information about the details about the credit accounts, types of credit accounts, how long it took to create them, amounts owed, whether paid bills on time or not, number of recent credit inquiries, etc.

Credit history is important cause credit companies and lenders use this information to decide whether to lend money or not.

Having a good credit history means paying your bills on time without having heavy debts. It makes it easy to get credit cards, gives a better choice of loans, and helps to gain lower interest rates. All these factors can help you get a good amount of loans and gain the trust of creditors.

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Which sate did Russia sell to the U.S?

Answers

Answer:

Alaska

On March 30, 1867, the United States reached an agreement to purchase Alaska from Russia for a price of $7.2 million. The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl.

Explanation:

How have the major causes of death changed from 1900 to now?

Answers

Tuberculosis, gastrointestinal infections, and diphtheria were the leading causes of death in 1900, but cases have seen a large reduction in mortality and this has made these diseases no longer the leading cause of death in the United States. However, heart disease and cancer have increased mortality.

About mortality ratio

Mortality ratio is a measure of the average death of the population in a certain area or area. In simple terms, mortality is the number of deaths from certain diseases or natural deaths. Mortality is an important component in population. Population growth is determined one way or another by mortality

The object of mortality is all humans at all types of ages wherever and whenever. Mortality is an important piece of information for the government and the private sector in the field of economy and health. The problem of mortality covers the economic, social, customary, and environmental health sectors. The improvement of the people's welfare by the central government and local government can be known through the mortality indicator.

The combination of information in the form of maternal mortality rate, infant mortality rate, child mortality rate, as well as the prevalence of malnutrition and age life expectancy, is representative of the level of welfare of the population. In addition, the amount of mortality determines the development direction of a country.

The calculation of mortality consists of several types, such as: infant mortality rate, crude mortality rate, and death rate by age group.

Mortality is different from morbidity which refers to the number of individuals who have the disease during a certain period of time.

Mortality in detail is defined as the number of specific deaths in a population with the large scale of a population per unit multiplied. Specific mortality expresses the number of death units per 1000 individuals per year.

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Upon a declaration of war or when so directed by the President, the Coast Guard may be transferred to and operate as a service of

Answers

The Coast Guard shall function as a service in the Navy upon the declaration of war or whenever the President orders and shall do so until the President, by Executive Order, returns the Coast Guard back to the Department of Transportation.

What are presidential orders called?

Presidents use executive orders, a sort of written directive, to impose their policies on the executive branch of the government.

Executive orders that go beyond the president's power can be revoked by Congress and Federal courts.

Conservatives contend that President Barack Obama utilised executive orders to accomplish goals he was unable to secure congressional approval for.

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Read the excerpt from Alabama's ordinance of sessions select two highlighted text examples that provide reasons for Alabama session

Answers

Answer:

An Ordinance to dissolve the union between the State of Alabama and the other States united under the compact styled "The Constitution of the United States of America"

Whereas, the election of Abraham Lincoln and Hannibal Hamlin to the offices of president and vice-president of the United States of America, by a sectional party, avowedly hostile to the domestic institutions and to the peace and security of the people of the State of Alabama, preceded by many and dangerous infractions of the constitution of the United States by many of the States and people of the Northern section, is a political wrong of so insulting and menacing a character as to justify the people of the State of Alabama in the adoption of prompt and decided measures for their future peace and security, therefore:

Be it declared and ordained by the people of the State of Alabama, in Convention assembled, That the State of Alabama now withdraws, and is hereby withdrawn from the Union known as "the United States of America," and henceforth ceases to be one of said United States and is, and of right ought to be a Sovereign and Independent State.

Sec 2. Be it further declared and ordained by the people of the State of Alabama in Convention assembled, That all powers over the Territory of said State, and over the people thereof, heretofore delegated to the Government of the United States of America, be and they are hereby withdrawn from said Government and are hereby resumed and vested in the people of the State of Alabama.

And as it is the desire and purpose of the people of Alabama to meet the slaveholding States of the South, who may approve such purpose, in order to frame a provisional as well as permanent Government upon the principles of the Constitution of the United States,

Be it resolved by the people of Alabama in Convention assembled, That the people of the States of Delaware, Maryland, Virginia, North Carolina, South Carolina, Florida, Georgia, Mississippi, Louisiana, Texas, Arkansas, Tennessee, Kentucky, and Missouri, be and are hereby invited to meet the people of the State of Alabama, by their Delegates, in Convention, on the 4th day of February, A.D., 1861, at the city of Montgomery, in the State of Alabama, for the purpose of consulting with each other as to the most effectual mode of securing concerted and harmonious action in whatever measures may be deemed most desirable for our common peace and security.

And be it further resolved, That the President of this Convention, be and is hereby instructed to transmit forthwith a copy of the foregoing Preamble, Ordinance, and Resolutions to the Governors of the several States named in said resolutions.

Done by the people of the State of Alabama, in Convention assembled, at Montgomery, on this, the eleventh day of January, A.D. 1861.

Why do you think that non-African nations supported certain factions that claimed power in the newly independent nations of Africa?

Answers

Answer:

They wanted to use Africa's resources for their factories also to sell finished from European Collett colonial powers what problems faced these new countries economics of the African countries were dependent on these crops think what Give some examples of how colonial rule caused the independent African nations

Explanation:

hope this helps

When women entered the workforce after World War II What was an obstacle they faced?

Answers

During World War II Women faced challenges in overcoming cultural stereotypes against working women, as well as finding adequate childcare during working hours. Minority women also endured discrimination and dislocation during the war years.

Before enlisting in World War II, how did the US mobilize?

The War Resources Board was established as the U.S. government's initial move to start making war preparations (WRB). The board was tasked with creating a strategy outlining the steps required to mobilize the nation's industry. The military also issued its own Industrial Mobilization Plan in 1939. The Selective Service and Training Act (draft), as well as the training and deployment of troops, were all parts of the US's mobilization for World War II.

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The "Great Ocean Conveyor Belt" is an ocean current that helps move heat energy around the earth and keeps our atmosphere more liveable. This ocean current is caused by differences in water density. These differences are caused mainly by:

Question 2 options:

Chemical content and surface winds


Salinity and surface winds


Water temperatures and salinity


Water temperatures and geographical formations

Answers

This ocean current is caused by differences in water density.  These differences are caused mainly by Water temperatures and salinity. Thus option C is correct.

What is the Great Ocean Conveyor Belt?

After the heat of the Sun has been taken by the water, a significant portion of it is distributed throughout the world via the huge conveyor belt.

The equator would really be much higher, the poles will be much colder, therefore western Europe wouldn't enjoy the same warm temperature as it does now if it weren't for this stream.  Water is transported around the world by huge ocean conveyors.

The deep-ocean transportation system known as the "global ocean production line" is continually changing, governed by temperature and salinity. Therefore, option C is the correct option.

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Plz help! Past due!
What types of strategy did North Vietnamese forces use during the conflict? © Copyright History Matters 2015.

Answers

What types of strategy did North Vietnamese forces use during the conflict?

Answer: Every citizen is a soldier, implement guerrilla warfare: a type of asymmetric warfare often used by smaller and weaker military groups and groups that are easier to hide against larger and stronger enemies that are harder to hide. Guerrilla warfare includes ambushes, sabotage, surprise attacks, lightning strikes, and quick retreats.

What fighting strategies did the Vietcong and NVA (North Vietnamese Soldiers) use to lower the morale and confidence of the American soldiers? They used guerilla warfare and hit and run tactics. They knew the land better than the Americans. They hid among the South Vietnam people

The architect president's home. O James Madison O James Hoban O John Adams built the​

Answers

Answer:

James Hoban

Explanation:

in 1792, the president george Washington chose hogan’s design for his house, after selecting the site for the White House the previous year

20 POINTS + BRAINLIEST HELP ASAP.

Answers

Answer:

it will be more costly than what it is worth in the end

what was the strategic arms reduction treaty

Answers

The Strategic Arms Reductions Treaties, known as START I and START II, were agreements to reduce the number of long-range nuclear weapons in the United States and the former Soviet Union.

How does a case of Escobedo vs Illinois get into the Supreme Court? I

Answers

Answer:

Escobedo appealed to the Illinois Supreme Court, which initially held the confession inadmissible and reversed the conviction. Illinois petitioned for rehearing, and the court then affirmed the conviction. Escobedo appealed to the US Supreme Court, which overturned the conviction in a 5-4 decision.

Explanation:

hopefully this helps you!

The United Nations has declared ethnic cleansing a crime against humanity and defined ethnic cleansing as "... a purposeful policy designed by
pne ethnic group to remove by violent and terror inspiring means the civilian population of another ethnic group from certain geographic areas.
Should the Indian Removal Act be considered an example of ethnic cleansing? Why or why not?

Answers

Answer:

yes it should. the Indian removal act was a way to rid the "civilized"land of the United States. instead of embracing the culture of the Native Americans, the government wanted to rid the United States of them. they were forced to give up their lands and move across the country, missionaries tried to convert them to Christianity, not speak their native language or wear their clothing. If the tribes did not leave the land peacefully the Army would come in and forcefully move the tribes. hence the trail of tears

1. Government propaganda might be used in which of the following cases?
A)to inform citizens of the date for an upcoming election

B) to convince people of the importance and benefits of its programs

C)to inform people of the pros and cons of an issue

D)to give the point of view of the Germans and Japanese​

Answers

Answer:

the awnser is b) to convince people of the importance and benefits of its program

Answer:

its B) because propaganda cause it is made for the government

Explanation:

I guess but pls dont judge me

9
According to Mee-Hai Kong of Pusan's Women's University, the change in Korean women's status, political participation, and
employment is a result of modern development. Which social institutions are most responsible for this development?

A. economics and nonprofits

B. economics and government

C. education and religion

D. nonprofits and government

Answers

Social institutions are most responsible for this development economics and government.

What is Social institutions?

Social institutions are complex organizations that are formed by individuals to achieve common goals. They are often used to maintain order and organization in society. They can take many forms, such as religious institutions, educational institutions, economic institutions, government institutions, and family institutions. In each case, these institutions are designed to provide a structure and set of rules that help individuals achieve their desired goals. Social institutions also help to ensure that all members of society are treated fairly, and that everyone is provided with the opportunity for personal growth and development. Social institutions are essential for creating and maintaining strong, healthy societies.

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Uprisings in Belgium and Poland in the 1830s were influenced by what event?
A. The French Revolution
B. The American Revolution
C. The Industrial Revolution

Answers

Answer: The French "July" Revolution.

Explanation: This uprising in these 2 countries started The French July Revolution Because Belgium was attacked by the Dutch kingdom, which brought Louis-Philippe to the throne of France. Also, since the uprising happened in Brussels Belgium, this led Belgium to decide to break away from the United Kingdom of the Netherlands. Polish nationalists, however, were looking to the successful revolutions in Belgium in France, and also decided to revolt in 1830. Czar Nicholas quickly crushed the Polish rebellion. I hope this helps

(Yes, I am a world history and geography nerd XD)

explain the statement no one wins in a war

Answers

In any war, there will be two opposing sides, or more, but the fact that lives from all sides are lost in the battle is a loss, regardless of victory or defeat.

What did the Japanese do once they realized they had fallen behind Europe? How was this different from China?

Answers

Answer:

Explanation:

Once the Japanese realized that they had fallen behind Europe in terms of economic and military power, they implemented a number of reforms to modernize and westernize their country. This process, known as the Meiji Restoration, involved a series of reforms that aimed to transform Japan into a modern, industrialized nation.

The Meiji Reforms included a number of measures to modernize and westernize Japan, including the adoption of a new, Western-style legal system, the establishment of a centralized government and bureaucracy, the promotion of education and the creation of a public school system, and the development of a modern, industrialized economy. The Meiji Reforms also involved the adoption of Western-style military and diplomatic practices, as well as the opening of Japan to foreign trade and investment.

In contrast to Japan, China did not undertake a similar process of modernization and westernization. While the Chinese also faced pressure from foreign powers, they did not respond by implementing sweeping reforms to modernize their country. Instead, the Chinese government resisted foreign influence and attempts to open China to trade and investment, and continued to rely on traditional practices and institutions. This ultimately contributed to China's decline in the 19th and early 20th centuries, as other countries were able to outcompete China in the global economy and military sphere.

People who supported the 1996 welfare reform claim that the earlier system ________ and critics of reforms claim the new system ________

Answers

People who supported the 1996 welfare reform claim that the earlier system encouraged welfare dependency and critics of reforms claim the new system has done little to reduce poverty in the United States.

The federal government's approach to helping impoverished families has changed significantly as a result of the welfare reform law from 1996. Prior to 1996, low-income families had access to a range of welfare services, including cash payments, food stamps, and Medicaid. The American public grew to feel that this entitlement benefit system was a factor in the reduction of poor parents' ability to work and the even more dramatic decrease in the proportion of poor children growing up in two-parent households. The 1996 changes, among other things, mandated work for nearly every adult who joined the assistance rolls. A five-year restriction on the receiving of monetary welfare by particular families was also imposed, with some exceptions.

A federal assistance program in the US is called Temporary Assistance for Needy Families (TANF). It started on July 1, 1997, and it replaced the Aid to Families with Dependent Children (AFDC) program. Through the US Department of Health and Human Services, it provided financial aid to impoverished American families. The term welfare is frequently used to describe TANF.

Numerous of these regulations are in response to criticisms that the welfare law of 1996 placed too much focus on caseload reduction and not enough on poverty reduction.

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Was communism bad? If so, why and why not?

Answers

Answer:

It wasn't a bad idea but excuted poorly

Explanation:

Answer:

Communism, in the modern age, is a bad, bad idea.

Explanation:

Using a little bit of evolutionary biology and psychology i will explain.

The reason it's a bad idea is because people can only work together in the long term given some kind of incentive to do so. People require a leader to control and manipulate them for them to all work together in the long run. Why do you think we have prisons? It's for this massive reason that I have just stated.

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Find the area of the rhombus.Find the area. The figure is not drawn to scale. What is the value of f in a function? What was the main issue in the Presidential election of 1868? Someone please help ASAP !! A block of metal has a mass of 18.361kg and the following dimensions: 22.35 cm x 7.34 cm x 22.05 mm. What is the density of the metal in g/cm^3 On the basis of Maslow's hierarchy of needs,one would be LEAST likely to predict that aA) starving person might sell his or her child to obtain food.B) teacher with high self-esteem might seek a career change to use his or her abilities more fully.C) successful business executive might show greater concern for his or her family relationships than for becoming president of his corporation.D) prisoner might choose to die rather than betray his or her country. if u know lmk pls and ty Could Aliens 65 Million Light Years Away from Earth See Dinosaurs Alive? If aliens can see the dinosaurs, what problems might there be? If aliens couldnt see the dinosaurs, why not? Where does the light reaction occur in plants? There is a many-colored scarf hanging from a nail. MR. FRANK takes it, putting it around his neck. As he starts back for his rucksack, his eye is caught by something lying on the floor. It is a woman's white glove. He holds it in his hand and suddenly all of his self-control is gone. He breaks down crying. Find the angle measure of the shaded region Which proposal do you think the committee should choose? Write an essay on which you make an add for your choice. Support your argument with references to specific details in each proposal. Why was the word "escalation" used by critics of the Vietnam War? Which equations represent circles that have a diameter of 12 units and a center that lies on the y-axis? Select two options. x2 + (y 3)2 = 36 x2 + (y 5)2 = 6 (x 4) + y = 36 (x + 6) + y = 144 x2 + (y + 8)2 = 36 How do I solve this system of equations using the elimination methody=3x+13 2x=y-9 What is the rhetorical device used in the last two sentences of paragraph 12A. hyperboleB. sarcasmC. ironyD. litotesE understatement A client with sickle cell crisis reports severe generalized pain. Which intervention is a priority for correcting vaso occlusion what are body organs? 10.Find the area of the shadeda)b)14 cm14 cmd)e) Pls help me with math