What does a photosynthetic eukaryotic cell contain?
Plastids
Plastids. Some groups of eukaryotes are photosynthetic: their cells contain, in addition to the standard eukaryotic organelles, another kind of organelle called a plastid. There are three type of plastids: chloroplasts, chromoplasts, and leucoplasts. Chloroplasts are plastids that conduct photosynthesis.
What is the origin of eukaryotic organelles?
Eukaryotic cells arose through endosymbiotic events that gave rise to the energy-producing organelles within the eukaryotic cells such as mitochondria and chloroplasts. Mitochondria appear to have originated from an alpha-proteobacterium, whereas chloroplasts originated as a cyanobacterium.
What does eukaryotic usually contain?
Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles. There is a wide range of eukaryotic organisms, including all animals, plants, fungi, and protists, as well as most algae. Eukaryotes may be either single-celled or multicellular.
How was the photosynthetic eukaryote created?
A study suggests that photosynthetic eukaryotes may have emerged around 1.9 billion years ago in freshwater habitats. Eukaryotes are thought to have evolved the capacity for photosynthesis through a process called endosymbiosis, in which a protist host encapsulated a photosynthetic cyanobacterium.
Where is RNA found in eukaryotic cells?
nucleus
In eukaryotic cells, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein.
What was the first eukaryote?
Because eukaryotes are the only organisms on Earth that can make these molecules, scientists concluded that eukaryotes—probably simple, amoeba- like creatures—must have evolved by 2.7 billion years ago. The oldest eukaryotic body fossil is the multicellular alga, Grypania spiralis.
What was the first photosynthetic eukaryote?
Bangiomorpha
The earliest widely accepted fossil evidence of photosynthetic eukaryotes is Bangiomorpha, a red alga deposited ∼1.1 billion y ago (Bya) (12).
Is RNA found in eukaryotic cells?
In eukaryotic cells, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein.
How are eukaryotic cells involved in photosynthesis?
Some groups of eukaryotes are photosynthetic. In addition to the standard eukaryotic organelles, they contain another kind of organelle called a plastid. When such cells are carrying out photosynthesis, their plastids are rich in the pigment chlorophyll and a range of other pigments which are involved in harvesting energy from light.
What is the origin of the eukaryotic cell?
In the 1960s, American biologist Lynn Margulis developed the endosymbiotic theory. It states that eukaryotes may have been a product of one cell engulfing another and evolving over time until the separate cells were no longer recognizable.
Is there a molecular timeline for the origin of photosynthetic eukaryotes?
These data establish a molecular timeline for the origin of photosynthetic eukaryotes that is in agreement with the available fossil record.
What kind of structures are found in eukaryote cells?
Eukaryote cells include a variety of membrane-bound structures, collectively referred to as the endomembrane system. Simple compartments, called vesicles and vacuoles, can form by budding off other membranes.
