prokaryotes

/proʊˈkærioʊts/ /proʊˈkæriəts/

Meanings

noun

An organism whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.

Examples :

"Bacteria are prokaryotes, meaning their cells do not have a nucleus. "

noun

In the two-empire system of biological taxonomy, an organism of the kingdom Prokaryotae (now superseded).

Examples :

"Before scientists further classified life, all bacteria were grouped as prokaryotes, meaning they lacked a nucleus. "

organism biology microorganism science

Related Words

superseded verb

/ˌsupərˈsidɪd/ /ˌsjuːpərˈsidɪd/

To take the place of.

"Those older products have been superseded by our new range."

organism noun

/ˈɔː.ɡən.ɪ.zəm/ /ˈɔɹ.ɡən.ɪ.zəm/

A discrete and complete living thing, such as animal, plant, fungus or microorganism.

"The single-celled organism was studied by the biology students in their science class. "

organelles noun

/ɔːrɡəˈnelz/ /ɔrɡəˈnelz/

A specialized structure found inside cells that carries out a specific life process (e.g. ribosomes, vacuoles).

"Just like a factory has specialized machines for different tasks, a cell contains organelles that each perform a specific job, such as creating energy or storing waste. "

classified adjective

/ˈklæsɪfaɪd/ /ˈklæsəˌfaɪd/

Sorted into classes or categories

"The library books are classified by subject, so finding a book on history is easy. "

scientists noun

/ˈsaɪəntɪsts/

One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research, or make use of the results of the research of others.

"Scientists study plants to understand how they grow. "

absence noun

/ˈæb.s(ə)n̩s/ /æbˈsɒns/

A state of being away or withdrawn from a place or from companionship; the period of being away.

"Absence makes the heart grow fonder."

biological noun

/ˌbaɪə(ʊ)ˈlɒdʒɪkəl/ /ˌbaɪəˈlɑdʒɪkəl/

A biological product.

"The school's science fair featured several different biological specimens. "

membrane noun

/ˈmembɹeɪn/

A flexible enclosing or separating tissue forming a plane or film and separating two environments (usually in a plant or animal).

"The cell membrane controls what enters and leaves the cell. "

bacteria noun

/bækˈtɪəɹ.ɪ.ə/ /bækˈtɪɹ.i.ə/

A type, species, or strain of bacterium.

"The doctor identified the specific bacteria causing the student's illness. "

nucleus noun

/ˈnjuː.kli.əs/ /ˈnuːkli.əs/

The core, central part of something, around which other elements are assembled.

"The nucleus of the family's discussions was always about who would do the dishes. "

taxonomy noun

/tækˈsɒnəmi/ /tækˈsɑːnəmi/

The science or the technique used to make a classification.

"The librarian used a detailed taxonomy to organize the books by subject and author, making it easier for students to find what they needed. "

characterized verb

/ˈkæɹəktəɹaɪzd/

To depict someone or something a particular way (often negative).

"The teacher characterized the student as disruptive in class. "