A plasmid is a type of double-stranded, circular, tiny DNA molecule that differs from a cell's chromosomal DNA.Both bacterial and certain eukaryotic cells naturally contain plasmids.Plasmids frequently carry genes that give bacteria genetic advantages like antibiotic resistance.
<h3>What do the little DNA loops in prokaryotic cells represent?</h3>
- Plasmids, which are tiny DNA molecules, can also be carried by prokaryotic cells.Small, circular DNA molecules called plasmids hold the cell's non-essential genes.
- In addition to chromosomal DNA, many prokaryotes also possess smaller, circular DNA molecules known as plasmids, which can provide genetic benefits in particular situations.
- Bacteria and certain other microscopic species contain plasmids, which are tiny circular DNA molecules.Physically distinct from chromosomal DNA, plasmids multiply on their own. Extrachromosomal plasmids are frequently tiny, circular DNA fragments with antibiotic resistance genes.
- It is possible for plasmids to replicate without the aid of prokaryotic chromosomal DNA and to spread to additional prokaryotes.
- Blue-green algae, bacteria, and mycoplasma are prokaryotes.Bacteria are the most prevalent and fastest-growing prokaryotes.They are single cells that are between 0.2 and 10 microns in size (about 10 times smaller than most plant and animal cells).
- Prokaryotic cells are characterized by the absence of membrane-bound organelles and a clearly identifiable nucleus.Prokaryotic cells are present in early unicellular organisms like bacteria and archaea.
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Bacteria sample A utilizes citrate while sample B does not.
<h3>What is the result of a simmons citrate agar?</h3>
Simmons citrate agar is a nutrient agar which contains the compound sodium citrate as a carbon source for microorganisms.
It is used to differentiate bacteria based on their use of citrate as a sole source of carbon.
A positive result for for citrate utilization will change the agar from green to blue while a negative result will remain green.
Therefore, since bacterial sample A produced a blue color while sample B agar remained green, A utilizes citrate while B does not.
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C. New Moon
becasue the Waning Crescent ends the moon cycle then it starts all over again with the New Moon
Answer:
The mitochondria and Golgi apparatus are packaged into the head of the sperm.
Explanation:
Spermatogenesis is the production of male germ cells. Sufficient stimulation with sex hormones, especially testosterone, and a lower temperature, which is achieved by placing the testicles in the scrotum, are required for the correct course of spermatogenesis. Sperm production has three phases: reproductive, growth and maturation. At the beginning of sperm development are spermatogonia, which are male primordial cells. They have a spherical shape and are located at the edges of the seminal canals. Spermatogonia is mitotically divided. On the one hand, in order to preserve their numbers, and on the other hand, their division produces primary spermatocytes, which lie above the layer of spermatogonia. Primary spermatocytes are diploid, but after the first meiotic division, haploid secondary spermatocytes are formed from them. They still have double chromatids, so a second meiotic division soon occurs, the product of which is spermatids. Spermatids are already fully haploid and do not divide further. Spermatids then undergo a process of spermiogenesis, in which the nucleus condenses, forming a flagellum and losing most of the cytoplasm and some organelles. Immature sperm travel through the seed-forming canals to the epididymis, where they are definitively matured. This whole process takes about 72 days.
Answer: , speed and energy efficiency come with a price in genetic diversity of the species.
Explanation:
