Why is Kingdom Protista so diverse?
Kingdom Protista is said to be the most diverse kingdom, because each of its members are so individual from each other. If an organism does not belong any particular kingdom, it goes into kingdom Protista. This miscellanous grouping causes the organisms in the kingdom to be very different from each other.
Does a protist have DNA?
Like all other eukaryotes, protists have a nucleus containing their DNA. They also have other membrane-bound organelles, such as mitochondria and the endoplasmic reticulum.
Do fungi have DNA?
Fungi are eukaryotes and have a complex cellular organization. As eukaryotes, fungal cells contain a membrane-bound nucleus where the DNA is wrapped around histone proteins. A few types of fungi have structures comparable to bacterial plasmids (loops of DNA).
What is the scientific name for Protista?
This organism consists of a single cell with several flagella. Therefore, this organism belongs to the domain Eukarya, the domain that includes humans. This particular eukaryote is one of the smallest, simplest organisms in the domain, called a protist. It’s scientific name is Giardia lamblia.
What is a protist simple definition?
“The simplest definition is that protists are all the eukaryotic organisms that are not animals, plants or fungi,” said Alastair Simpson, a professor in the department of biology at Dalhousie University. He further explained that there are examples of multicellular protists among brown algae and certain red algae.
What are the 3 types of protist?
Lesson Summary
- Animal-like protists are called protozoa. Most consist of a single cell.
- Plant-like protists are called algae. They include single-celled diatoms and multicellular seaweed.
- Fungus-like protists are molds. They are absorptive feeders, found on decaying organic matter.
What is another name for protists?
“Protista”, “Protoctista”, and “Protozoa” are therefore considered obsolete.
What does protista mean in Greek?
“Protista” comes from Greek words meaning “the very. first”
What are the four types of protist?
What does prokaryote mean?
Prokaryote, also spelled procaryote, any organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes. Bacteria are among the best-known prokaryotic organisms.
What do prokaryote and eukaryote literally mean?
Prokaryotic literally means ‘before the nut or kernel’, referring to the nucleus of the cell. Whilst prokaryotic cells are smaller and less complex than eukaryotic cells, there is no doubt that the success of prokaryotes has far surpassed any other living organisms that have since colonised the earth.
What does prokaryote mean in Greek?
A prokaryote is a typically unicellular organism that lacks a nuclear membrane-enclosed nucleus. The word prokaryote comes from the Greek πρό (pro, ‘before’) and κάρυον (karyon, ‘nut’ or ‘kernel’).
What is a human cell made of?
A cell consists of a nucleus and cytoplasm and is contained within the cell membrane, which regulates what passes in and out. The nucleus contains chromosomes, which are the cell’s genetic material, and a nucleolus, which produces ribosomes.
Where do human cells belong?
Despite the fact that we have gobs of prokaryotic cells living inside and on us, humans are still categorically eukaryotic organisms. This means that all human cells—including those found in the brain, the heart, the muscles, and so on—are also eukaryotic.
Do humans have a nucleus?
1 Answer. Yes there are millions of cells in our body and they all have a nucleus.
Which is an eukaryote?
Eukaryote, any cell or organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus, in which the well-defined chromosomes (bodies containing the hereditary material) are located.