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aev [14]
2 years ago
9

Why might you not see as much bacterial colonization of microbes from human saliva on plates cultured at 25oc versus plates incu

bated at 37oc?
Biology
1 answer:
GREYUIT [131]2 years ago
5 0

Bacteria need an optimum temperature for their growth, so this is the reason why we might not see as much bacterial colonization of microbes from human saliva on plates cultured at 25 °C versus plates incubated at 37 °C.

Why do bacteria only grow at certain temperatures?

  • The main justification for incubating bacterial cultures at various temperatures is that different temperatures favor the growth of particular bacteria.
  • Most infections and typical ambient bacteria are classified as mesophiles, which thrive in temperatures between 20 and 40 degrees Celsius.
  • An optimum temperature is required for the enzymes to show their activity, and for the division also many enzymes are involved in the process. So, the bacterial culture can be seen at a particular incubation temperature only.

To read more about bacterial colonization visit:

brainly.com/question/12485105

#SPJ4

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How are homologous chromosomes different from chromatids?
lozanna [386]

Explanation:

Homologous chromosomes are 2 physically different chromosomes that have the same genes but are not genetically identical. Sister chromatids are 2 copies of a single chromosome and so are genetically identical (they also are physically attached to one another).

5 0
3 years ago
Antibiotic resistance occurs when an antibiotic has lost its ability to effectively control bacterial growth. In other words, th
mars1129 [50]
<h3><u>Answer;</u></h3>

B. When an antibiotic is used, bacteria that have a natural variation for resistance to the antibiotic have a greater chance of survival.

<h3><u>Explanation</u>;</h3>

Antibiotic resistance is a consequence of evolution via natural selection.

The antibiotic action is an example of environmental pressure to bacteria, therefore; those bacteria which have a mutation allowing them to survive will live on to reproduce.

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3 years ago
Investigate substances containing carbon or oxygen that relate to biological processes. Explain their main function in those pro
Scorpion4ik [409]

Answer:

Well, you already have the answer, but I can try to elaborate XD

So, DNA: contains genetic information that is necessary for biological functioning and reproduction.

More specifically, it contains the genetic instructions through gene encoding that instructs the cell what to do. A specialized complex ribosome interacts with the DNA molecules and "reads" it, changing the genes from the DNA into proteins that the cell as a whole can function upon. It is also crucial to forming a whole cell in offspring, since only the genes from the two parents combined (in humans at least) can produce an offspring with all genes intact. Those who do not have genetic disorders, a famous one being Down Syndrome.

Next, RNA: a molecule necessary for expressing genes and making proteins.

Connecting to the paragraph above for DNA, RNA also assists in the process by reading the ribosome that reads the DNA itself. Complicated, I know. All you have to know, however, is that the RNA, in this case called mRNA since it serves as a messenger, hence, the "m", reads the codons produced by the ribosome when it reads the DNA, and makes proteins according to those codons, and those proteins then scatter all across the cell to execute instructions.

Now, we move onto nitrogen and phosphorous: both are found in amino acids, the building blocks of proteins.

That is actually partially wrong. Amino acids do not contain phosphorous, but do contain nitrogen. Not exactly sure what went wrong on your end there, but nitrogen is a basic building block for amino acids, which are basic building blocks themselves for proteins. To be more clear, amino acids are made of carbon, hydrogen, oxygen and nitrogen atoms. No phosphorus there!

Finally, enzymes: special proteins that accelerate chemical reactions in cells.

This is correct. Enzymes typically lower the activation energy required for reactions to happen. More specifically, enzymes make the reaction molecules more active, hence, lowering the threshold for the amount of energy you have to put in before the molecules start crashing into each other hard enough to have a chemical reaction. Of course, enzymes do not participate in the reaction itself, which makes them incredibly useful for spurring on chemical reactions since they can be used multiple times.

Yes i know the answer is long

ididnt know how big or small you wanted it

so......yea

hope it helps

7 0
3 years ago
Heat is the _____________ of thermal energy.<br> A.<br> transfer<br><br> B.<br> conservation
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Answer:

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According to the EPA, what are three benefits to geothermal heat pumps?
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Explanation:

6 0
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