Answer:
A. engulfing of small photosynthetic prokaryotes by larger cell
Explanation:
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship.
Some Evidence for this is based on the following:
1. Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane.
2. The mitochondria are the same size as prokaryotic cells, divide by binary fission, and the mitochondria of some protists have Fts homologs at their division plane.
3. Mitochondria and chloroplasts have their own DNA that is circular, not linear.
4. Mitochondria and chloroplasts have their own ribosomes that have 30S and 50S subunits, not 40S and 60S.
5. Several more primitive eukaryotic microbes, such as Giardia and Trichomonas have a nuclear membrane but no mitochondria.
Blue eyes<span> are blue to lack of melanin, brown </span>eyes<span> are brown due to a lot of melanin and </span>hazel<span> or green </span>eyes<span> have melanin levels in between, and, as such, can appear to take on different hues based on how they blend with the </span>colors<span> people wear, the </span>color<span> of their hair</span>
If water does not contain carbon atoms in its structure, why is it considered a fundamental biomolecule for the development of living organisms?
Many unicellular organisms live in bodies of water and must move around to find food. Most often, they must obtain nutrients by eating other organisms. Plant-like protists, and some types of bacteria, can make their own food through photosynthesis.
Answer: because they are eukaryotypes,
Explanation: they are hetreotrophs, and some can move and some cannot. ... This protist is a Protozoan with a pseudopods. 2a) What are characteristics do diatoms dinoflagellates, and other plantlike protists share. They are cell organization, structure, and function.
