In this activity, you'll grow bacteria in four prepared petri dishes. The first petri dish will have a sample swabbed from your unwashed hands. The second petri dish will have a sample swabbed from your hands after washing them with regular soap. The third petri dish will contain another sample from your unwashed hands. The fourth petri dish will contain a sample taken after cleaning your hands with hand sanitizer. What do you think the results will be? Write down your predictions for which samples will show the greatest and least bacteria growth. bacteria: unicellular organisms that sometimes have cell walls but do not have organelles and an organized nucleus

Answers

Answer 1

Answer:

Explanation:

In this study, the swabs taken should represent different amounts of bacteria growth. The samples that were swabbed from unwashed hands should show the greatest bacteria growth. This is because there already existing bacteria have not been killed and have been allowed to reproduce, and since bacteria reproduce at an alarming rate (roughly doubling every 4 minutes) it would pick up momentum easily. Next, would be the swabs of hands washed with soap since soap cleans your hands killing off most of the harmful bacteria thus lowering its rate of reproduction drastically. Lastly, would be the swabs of hands cleaned with hand sanitizer since hand sanitizer is designed to kill 99.9% of germs it comes in contact with therefore eliminating nearly every germ in your hands. This also makes it very unlikely that the swabs managed to pick up any germs.


Related Questions

What are the advantages of Terai region in Nepal? Explain.

Answers

terai region is the main region for agriculture

agriculture production are supplied to all over country from this region

hope this will help you

Answer:

hi

Explanation:

bye

I really need Newsela answers for "Shakespeare's works have been translated and performed internationally since the 1600s"

When did William Shakespeare's plays become popular around the world? How do you know?
A.They were very popular as soon as he started writing; "Shakespeare's plays were written during the late 1500s and early 1600s. At that time English audiences were becoming more aware of the world."

B. They grew to be more popular over the course of his life; "Shakespeare's plays were initially performed in England and Europe. By the end of his life, however, they appeared in all corners of the globe."

c.They were only popular after he died; "One translation of Shakespeare can seem like it was written in Germany around the 1800s. Another can sounds like it was written in the Soviet Union during the 1920s."

d.They grew suddenly popular after appearing on television; "Over the past 100 years, Shakespeare has been adapted to stage, film and television around the world."

Answers

Answer:

c.They were only popular after he died; "One translation of Shakespeare can seem like it was written in Germany around the 1800s. Another can sounds like it was written in the Soviet Union during the 1920s."

Explanation:

William shake sphere died in April 23, 1616.

Over the course of his life, Shakespeare's work were popular only within England (Especially between the period of 1590s to the 1630.

His works started to gain popularity around the 17th century as many artists within the continental Europe started to performed his stories in their local plays.  His play started to gained international recognition only in mid 1800s, around 200 years after his death.

Why is it important for laws to be written down? Support your answer with at least two pieces of evidence from the text.

Answers

Explanation: Written laws are important for several reasons. Written laws provide a shared reference. Once a law is written down, there is an objective record of what the law is. That means if you can read the law, or can get someone to read the law to you, you can use it.On the most basic level, you can consult it directly, so you know what to do and not do.

Laws existed before writing, but they were held in memory. This meant you had to go to the people who knew the law (usually the wise elders of a society) and ask them what the law was. This means the oral transmission of culture is disrupted, these laws can mutate or be lost.

Written law also allowed a society to grow beyond a certain size. To use the example from above, in an oral culture you either have to be directly in the presence of the people who know the law, or have the law passed on to you by word of mouth. That puts a practical limit on the size of a society. Written laws allows continuity across space. Imagine trying to govern a nation like the United States using only laws passed on through word of mouth. That would be next to impossible.

Historically, writing laws down allowed a kind of democratization of power. You can see this in ancient Rome, when the common or plebeian class pushed for a change from an oral legal tradition, and for laws to be written down.

Written laws serve as a common reference point. There is an impartial record of what a legislation is once it has been written down.

That implies you can utilize it if you can read the ruling or have someone read it to you. This means that oral cultural transmission is disturbed, and these laws may evolve or disappear.It reaffirmed the government's role in the community and set consistent criminal laws and punishments.Learn more:

https://brainly.com/question/17641127?referrer=searchResults

What was the bloodiest battle ever fought in Georgia?

Chickamauga
Savannah
Griswoldville
Resaca

Answers

Answer:

Chickamauga

Explanation:

3. PART B: Which phrases from the text best support the
answer to Part A?
.
A "In order to do that, the people made the Articles of
Confederation. This was a document that explained
what the central government's job was." (Paragraph 7
)
B "Eventually, they came to a compromise. Every five
slaves would count as three people when they counted
the population." ( Paragraph 12)
C "Beyond just splitting the government, they made it so
each branch could stop other branches from making
bad decisions." (Paragraph 17)
D "The Founders also wanted to make sure the states still
had some authority." ( Paragraph 19)
E "The purpose of the Bill of Rights is to clearly say what
the rights of every voting citizen in the United States
are." ( Paragraph 23 )
F"Congress has made 17 more amendments over our
nation's history." ( Paragraph 25)

Answers

C ? Beyond just split

Why do so many ppl in India and bangladesh live by the Ganges river???

Answers

Answer:

B. It provides water for farming and it's used as a way to transport people and goods

Explanation:

The Ganga River has become a water source for over 300 million people living by it. They use the river water for drinking, planting, and transportation.

Hope this Helps!

How much is this coin with John F. Kennedy's image
worth?

Answers

Answer:

$3

Explanation:

Answer: $3

Explanation:

The ancient Egyptians were the first known people to develop __________. A. wooden boats B. military armor C. a 365-day calendar D. a system of writing

Answers

Answer:

D

Explanation:

Ancient Egyptian writing isknown as hieroglyphics ('sacred carvings') and developed at some point prior to the Early Dynastic Period (c. 3150 -2613 BCE). According to some scholars, the concept of the writtenword was first developed in Mesopotamia and came toEgypt through trade.

Answer:

c

Explanation:

The governor's canes symbolized __________________
a.
Spanish control over the Pueblos.
b.
the ancient history of the Pueblos.
c.
a feeble people who needed canes.
d.
the right of the Pueblos to govern themselves.

Answers

Answer:

D)

Explanation: im pretty sure

Intellectual property rights are important to a free enterprise system because they:
A. ensure that all companies benefit equally from new ideas.
B. help governments set prices for essential products.
C. prevent the courts from interfering with private businesses.
D. prevent companies from stealing ideas from innovators.

Answers

Answer:D

Explanation:got it right

in an ideal world, all representatives, judges, and the president would be independently

Answers

Answer:

wait independently what?

Explanation:

_____ were powerful organizations that used legal and illegal methods.

A. political machines

or

B. progressives

Answers

Answer:

Political machines (A)

Explanation:

They wanted to get their candidates elected to office and would do almost anything no matter if it was legal or illegal to assure this. Progressives were people or reformers who worked to improve society in the late 1800s and there fore were less likely to do something illegal because they wanted change for the better.

Who do doctors and hospitals charge for their services in a fee-for-service
health-care system?
A. Pharmacies
B. Religious organizations
C. Insurance companies
D. Patients

Answers

Answer:

D

Explanation:

Pharmacies,Religous organizations, and insurance companies do not pay the patients fees.

4What can be inferred from the text?
A.Living close to a volcano can be dangerous.
B. Volcanoes usually destroy islands when they erupt.
C. Touching molten lava would not hurt as much as boiling water.
D. Kilauea is the only volcano on the Hawaiian islands

Answers

A I think the answer would be A

Was it the plantation owners who received the money made from selling their African slaves at an auction or someone else?​

Answers

Answer:

Yes, given the context.

Explanation:

As long as the plantation owner owned the slave and it was written down as his property in his inventory, he could do whatever he wanted with it and so if he sold it, since he owned it he would get all the profit.

HELP NEEDED ASAP!!! Select all that apply.
The historical method includes what steps?

analysis of data
classifying data
guessing about data
giving opinions on data
reporting on data

Answers

it should be classifying data! but if not then analysis of data

im doing this for a genealogical school research, does this man look american to u ,be honest please

Answers

Answer:

nope

Explanation:

he doesn't.........

What resulted from the Maccabean Revolt? Choose three correct answers.

Jewish people controlled the Temple of Jerusalem.
Jewish practices were made illegal.
Jewish people were forced to worship Greek gods.
The nation of Judah became independent.
Jewish people could not study their sacred writings.
Jewish people lived by their own laws.

Answers

Answer:picture below

Explanation: I did the test

Answer:

The Answer is A,D and F

Explanation:

YOUR WELCOME :)

What are charters, and how did they influence the establishment of colonies I need help quick

Answers

Answer:

Colonial charters were empowered when the king gave a grant of exclusive powers for the governance of land to proprietors or a settlement company. The charters defined the relationship of the colony to the mother country as free from involvement from the Crown.

Explanation:

Whats rights were protected by the governments set up in the colonies?

Answers

Answer:Among the natural rights of the Colonists are these: First, a right to life; Secondly, to liberty; Thirdly, to property; together with the right to support and defend them in the best manner they can.

Explanation:

Which mixture is homogenous?

Answers

Answer:

There is not enough information in this question to give a proper answer, sorry

Explanation:


Problem: The miller needs a job and worries about
people's opinion of him.
The donkey is startled by the loud noise
and runs away.
The miller has no money and no donkey,
and feels bad about his foolishness.
The miller gets a job as the town's best
standup comedian.
The miller sees all the peopleline has
passed on the road at the flea market. I

Answers

Answer: The Miller gets a job as the town’s best standup comedian.

Explanation: The question: Which event solves the main problem? Problem: The muller needs a job and worries about people’s opinions of him

Answer:

The miller gets a job as the town's best

standup comedian.

Explanation:

How long did it take to go from one Cherokee village to the next?
A. One hour
B. One day
C. One week
D. One month




Help me ASAP please

Answers

Answer:

I think it was, it took them one month. If I remember correctly, let me know If I am wrong!

Explanation:

After which battle did the British surrender and who surrendered on the behalf of Great Britain?

Answers

Answer:

Yorktown

Explanation:

hope that helps

HEEELLLLLLPPPPP!!!!!!!!!!!!!!The countries of South Asia seem to be the same no matter where you go. True or false

Answers

Answer:

True

Explanation:

Bridges and Buildings from the past are still visible, Past things

Where are all the rivers in the United States and Canada

Answers

Answer:

Canadian River

South Branch West Canada Creek

Canada Garcia Creek

La Canada Verde Creek

West Canada Creek

Canada Creek

Canada Verruga

Explanation:

Mark Brainlist pls

Explain the "Great Compromise" of the constitution and the bill of rights

Answers

Answer:

-The Great Compromise created two legislative bodies in Congress. ... According to the Great Compromise, there would be two national legislatures in a bicameral Congress. Members of the House of Representatives would be allocated according to each state's population and elected by the people.Apr 17, 2018

-The Bill of Rights is the first 10 Amendments to the Constitution. ... It guarantees civil rights and liberties to the individual—like freedom of speech, press, and religion. It sets rules for due process of law and reserves all powers not delegated to the Federal Government to the people or the States.Jul 24, 2020

Explanation:

Which of the following statements about Latin American governments is false ?
A. Most countries have written constitutions,
B. Most countries have strong executive branches and weaker legislatures.
C. Most countries are military dictatorships.
D. At least one country has an authoritarian dictatorship.

Answers

I think it is A not sure

Answer:

It’s C. Most countries are military dictatorships.

Explanation:

. What was the purpose of the Farmer's Alliance?

Answers

Answer:to improve the economic conditions for farmers through creation of cooperatives and political advocacy

Explanation:

Answer:work for political and economic reforms

What is South Africa's biggest economic challenge? A. It has few natural resources. B. Its economy is too dependent on the service industries and not enough on mining. C. Its history of apartheid has resulted in high poverty rates among its black population. D. It has to import too much of its oil.

Answers

Answer:

Its history of apartheid has resulted in high poverty rates among its black population.

Explanation:

South Africa has the second biggest Economy on the continent of Africa. They are regarded as the most technologically advanced and diversified economy, rated above Nigeria and other big economies.

The country is said to have people from different races and in the third quarter for 2010, a certain report that was released showed that the black population accounted for 29.80% of the total number of unemployed people, while figures for the white people and Asians were 5.10 % and 8.60% respectively.  

Answer:

 

Its economy is too dependent on the service industries and not enough on mining.

Explanation:

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