<span>D) composed of one or more eukaryotic cells</span>
Answer:
The phloem connects the leaves to the stem and roots of the plants by transporting the sucrose to various parts.
All the statement above are very true of what virus structure constitute.
This goes to say that viruses:
- use DNA as their genetic material.
- have a phospholipid bilayer envelope.
- lack organelles, ribosomes, and a plasma membrane.
- have a capsid.
- require a host for replication.
<h3>What are viruses?</h3>
Viruses are seen and considered as the border line between living and non living things.
- Viruses are living when they are inside another living organism. They are the smallest known microorganisms.
- However, they are non-living when they are outside the system of a living thing
Learn more about viruses:
brainly.com/question/18451282
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.
