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Black_prince [1.1K]
2 years ago
6

Determine the significance of plasmids for bacteria. A.They help in meiosis and in the manupulation of the plasmids of their hos

t organisms. B. They help in meiosis and in the manupulation of their genome with the gene of their requierment. C.They help in reproduction , antibiotic resistance, virulence and competition with other bacteria
Biology
2 answers:
Art [367]2 years ago
8 0
I think the correct answer from the choices listed above is option C. Plasmids are small DNA molecules within a cell that are important for bacteria because t<span>hey help in reproduction , antibiotic resistance, virulence and competition with other bacteria.</span>
nignag [31]2 years ago
3 0

Answer:

The correct answer is C.They help in reproduction , antibiotic resistance, virulence and competition with other bacteria

Explanation:

Plasmids are the small, single circular DNA molecule that is different from the chromosomal DNA of bacteria. These plasmids can replicate independently from the chromosomal DNA. Plasmids are naturally found in bacteria.  

These plasmids contain some extra genes like antibiotic-resistant genes that provide bacteria an advantage in a competition over bacteria that do not have plasmid with antibiotic-resistant genes because when antibiotic is used against these bacteria the bacteria having antibiotic-resistant gene will survive.

Plasmid also code for virulence factors in bacteria like toxins, adhesin proteins, etc. Therefore the right answer is C.

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List 4 targets of antibiotics.
Aleksandr-060686 [28]

Answer: Antibiotics targets the synthesis of protein, nucleic acid, folate and cell wall.

1. Synthesis of protein; antibiotics binds to either 30s or 50s ribosomal subunits blocking the polypeptide from the exiting the tunnel thus inhibiting a full completion of protein expression or production.

2. Nucleic acid synthesis; Antibiotics also act by inhibiting genetic expression, DNA transcription and replication where DNA makes exact copies of itself, as well as RNA molecules preventing bacterial growth.

3. Cell wall synthesis; Inhibition of cell wall synthesis in microorganisms will prevent it from replication and growth.

4. Folate synthesis; Folic acid also known as vitamin B9 helps in DNA replication and cell division. Folate antagonists such as aminopterin kills bacteria by preventing folic acid production required for DNA replication.

3 0
2 years ago
Gerard lives in a tropical region where the average
Inga [223]
It’s Insulated gloves because you wouldn’t need gloves in 77 degree weather.
7 0
2 years ago
Which two steps follow after Lysis in the experiment​
Advocard [28]

Explanation:

The cell must be lysed (broken open) to release the nucleus. the nucleus (if present) must also be open to release the DNA. at that point the DNA must be protected from enzymes that will degrade it, causing shearing. [[ once the DNA is released, it must then be precipitated in alcohol...]

8 0
2 years ago
What is the pH of a 0.00125 M HCl solution?
timofeeve [1]

Answer:

pH=2.9

Explanation:

Hello,

In this case, the pH is computed by:

pH=-log([H^+])

Whereas the concentration of hydrogen ions equals the concentration of the acid for strong acids such as hydrochloric acid (HCl) due to its complete ionization in solution, which means that such concentration is 0.00125 M. Thus, the pH turns out:

pH=-log(0.00125)\\\\pH=2.9

Regards.

4 0
3 years ago
Howard is constructing a model of the tree of life. Which strategy would most likely ensure that all of Earth's organisms are re
scZoUnD [109]

Answer:

The answer is A. Draw branches for the domains: Bacteria, Archaea and Eukarya

Explanation:

Three Domains of Life:

Bacteria, Archaea and eukarya are the three principal branches or domains of the tree of life that explains the evolutionary relationship between all living organisms.

The first two domains, bacteria and archaea comprise the prokaryotic unicellular organisms. The third domain, eukarya includes all eukaryotic organisms.

All other organisms have evolved from these three principal domains.

3 0
3 years ago
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