bacteria
の説明 bacteria あなたのレベルで:
Bacteria are tiny things that live everywhere. Some are good, and some are bad. You cannot see them without a special lens.
You can find bacteria in the air, water, and soil. We wash our hands to get rid of harmful ones. Some bacteria help us stay healthy.
Although bacteria are often linked to diseases, many types are beneficial. They are essential for processes like fermentation in food. Scientists study them to develop new medicines.
The term bacteria refers to a diverse domain of prokaryotic organisms. While pathogenic bacteria cause infections, commensal bacteria are vital for human physiological functions like digestion.
In scientific discourse, bacteria are categorized based on their morphology and metabolic processes. Understanding their role in the microbiome is a central focus of modern immunology and environmental science.
The ubiquity of bacteria across diverse ecological niches highlights their evolutionary success. From extreme thermophiles to human-associated flora, their genetic adaptability remains a cornerstone of biological research and biotechnology.
bacteria 30秒で
- Bacteria are microscopic living organisms.
- They exist in almost every environment.
- Some are helpful, while others cause illness.
- Bacteria is the plural form of bacterium.
Think of bacteria as the invisible neighbors that share our world. They are microscopic organisms, meaning you cannot see them with the naked eye.
While people often associate them with getting sick, most bacteria are actually helpful. They live in your gut to help you digest food and play a huge role in cleaning up our environment.
The word bacteria comes from the Greek word bakterion, which means 'little staff' or 'little rod.' This is because early scientists looked through microscopes and saw that many of these tiny creatures looked like tiny sticks.
It entered the English language in the 19th century as science began to uncover the hidden world of microbiology. It is a fascinating example of how ancient languages still shape our modern scientific vocabulary.
In casual conversation, we often use bacteria when talking about hygiene or health. You might hear people say 'wash your hands to remove bacteria.'
In formal or scientific contexts, it is used to describe biological processes. Note that the word is technically the plural form, while the singular is bacterium.
While there are few formal idioms using 'bacteria,' it is often used in metaphors. 'Good bacteria' is a common phrase used in marketing for yogurt or health supplements to describe probiotics.
We also use the phrase 'bacterial infection' as a standard medical term. You might hear someone say 'I have a bacterial infection' to explain why they need antibiotics.
The most important grammar rule is that bacteria is a plural noun. If you are talking about just one, you must say bacterium.
The pronunciation is /bækˈtɪəriə/. The stress is on the second syllable. It rhymes loosely with 'area' or 'hysteria' in some dialects.
豆知識
Named for their shape under early microscopes.
発音ガイド
Back-TEER-ee-uh
Back-TEER-ee-uh
よくある間違い
- Misplacing stress
- Pronouncing as singular
- Adding an 's'
韻が合う語
難易度
Easy to read
Easy to write
Easy to say
Easy to hear
次に学ぶべきこと
前提知識
次に学ぶ
上級
知っておくべき文法
Plural Nouns
Bacterium -> Bacteria
Subject-Verb Agreement
Bacteria are...
Countable vs Uncountable
Bacterium is countable
レベル別の例文
Bacteria are very small.
Small living things.
Plural noun.
Bacteria live in water.
Some bacteria are good.
Wash your hands for bacteria.
Bacteria are everywhere.
I cannot see bacteria.
Bacteria are tiny.
Do you see bacteria?
Bacteria can make you sick.
There are bacteria on the table.
Good bacteria help your stomach.
Soap kills some bacteria.
Bacteria grow in the soil.
Scientists study bacteria.
Bacteria are single-celled.
Are all bacteria bad?
The doctor said it was a bacterial infection.
Yogurt contains healthy bacteria.
Bacteria play a role in decomposition.
We need to study the bacteria count.
Some bacteria are resistant to medicine.
The lab is testing for harmful bacteria.
Bacteria multiply very quickly.
Our bodies host trillions of bacteria.
The microbiome consists of various bacteria.
Antibiotics are used to treat bacteria.
Bacteria are essential to the nitrogen cycle.
Researchers are mapping the bacteria genome.
The bacteria thrive in warm environments.
We must minimize the spread of bacteria.
Some bacteria are used in food production.
The bacteria population is increasing.
The pathogenicity of these bacteria is well-documented.
Bacteria are instrumental in bioremediation efforts.
The colonization of bacteria is a complex process.
Genetic mutations allow bacteria to adapt.
We observed the bacteria under high magnification.
The bacteria culture was contaminated.
Probiotics introduce beneficial bacteria.
Strict protocols prevent bacteria exposure.
The phylogenetic tree of bacteria is vast.
Bacteria exhibit remarkable metabolic diversity.
Horizontal gene transfer is common in bacteria.
The bacteria are symbiotic with their host.
We analyzed the bacteria in the sediment.
The bacteria are highly resilient to stress.
Microbiologists classify bacteria by shape.
The bacteria are active in the fermentation.
類義語
反対語
よく使う組み合わせ
慣用句と表現
"good bacteria"
Probiotics that help health
Eat yogurt for good bacteria.
neutral"bacterial load"
Amount of bacteria present
The bacterial load was too high.
formal"bacterial resistance"
Ability to survive medicine
We are fighting bacterial resistance.
formal"bacterial colony"
Group of bacteria together
A bacterial colony grew in the petri dish.
formal"bacterial bloom"
Rapid growth of bacteria
The pond had a bacterial bloom.
formal"bacterial strain"
Specific type of bacteria
This is a dangerous bacterial strain.
formal間違えやすい
Both cause disease.
Bacteria are alive; viruses are not.
Antibiotics kill bacteria, not viruses.
Both are microorganisms.
Fungi are larger and different structure.
Mold is a type of fungus.
It is the same word.
Bacterium is singular.
One bacterium, many bacteria.
Casual synonym.
Germ is vague.
Wash your hands of germs.
文型パターン
Bacteria are + adjective
Bacteria are microscopic.
Some bacteria + verb
Some bacteria cause disease.
There are + bacteria + in + place
There are bacteria in the water.
We use + bacteria + to + verb
We use bacteria to make yogurt.
The presence of + bacteria + indicates
The presence of bacteria indicates contamination.
語族
名詞
動詞
形容詞
関連
使い方
8
丁寧さの度合い
ヒント
Memory Palace
Native Speakers
Health Focus
Grammar Shortcut
Say It Right
Avoid 'Bacterias'
Did You Know?
Study Smart
Formal Writing
Biology Tip
暗記しよう
記憶術
Back-teer-ee-uh: The tiny things on your BACK.
視覚的連想
A tiny stick-shaped creature.
Word Web
チャレンジ
Look at a yogurt label for 'live bacteria'.
語源
Greek
元の意味： Little rod
文化的な背景
None, but can be a sensitive topic regarding hygiene.
Commonly discussed in health and school contexts.
実生活で練習する
実際の使用場面
Health/Doctor
- bacterial infection
- antibiotics for bacteria
- test for bacteria
Cooking/Food
- food safety
- good bacteria
- prevent bacteria growth
School/Science
- microscope view
- bacterial colony
- single-celled organism
Cleaning/Hygiene
- kill bacteria
- remove germs
- hygiene standards
会話のきっかけ
"Did you know that bacteria live inside us?"
"How often do you think about bacteria in your daily life?"
"Why do you think people are afraid of bacteria?"
"Have you ever used a microscope to see bacteria?"
"What are some ways we can stay healthy around bacteria?"
日記のテーマ
Write about why bacteria are important for the planet.
Describe what you think a world without bacteria would look like.
Explain the difference between good and bad bacteria.
Reflect on how your hygiene habits help control bacteria.
よくある質問
8 問自分をテスト
Bacteria are very ___.
Bacteria are microscopic.
What is the singular of bacteria?
Bacterium is the singular form.
All bacteria are bad for you.
Many bacteria are helpful.
Word
意味
Grammar categories.
Standard subject-verb structure.
スコア： /5
Summary
Bacteria are tiny but powerful living things that play a huge role in our world and our health.
- Bacteria are microscopic living organisms.
- They exist in almost every environment.
- Some are helpful, while others cause illness.
- Bacteria is the plural form of bacterium.
Memory Palace
Native Speakers
Health Focus
Grammar Shortcut
例文
You should wash your hands with soap to kill the bacteria.
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