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Eddi Din [679]
3 years ago
9

A chemical is reported to inhibit bacterial replication. Bacterial cells are placed in medium with all nutrients necessary for r

eplication. The chemical is added to the culture, and after a half hour an extract of the DNA is prepared. A significant percentage of the DNA is in pieces about 1000 to 2000 bases in length. The results are consistent with the chemical blocking the function of DNA ligase.a) trueb) false
Biology
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

True

Explanation:

DNA ligases are enzymes required for replication, repair, and recombination of DNA molecules. The DNA ligase repairs the break in the DNA molecule by the formation of a phosphodiester bond.  

The bacterial genome consists of a circular DNA molecule, thereby laboratories use these enzymes to create recombinant DNA molecules

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Which of the following alternative engery technologies is most likey to be used to power a car?
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Answer:

The correct answer to the question is Biofuel

Explanation:

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The biofuels that can be used are butanol,ethanol and biodiesel etc.

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3 years ago
Need help with these questions answer what you can
OlgaM077 [116]

Answer 1:

The mutation shown is point mutation.

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Answer 2:

No, the resulting protein will not be altered.

The genetic code occurs in a linear sequence with triplet format. The change in a single base will cause the wrong amino acids to be formed. However, if the different code is common for the same amino acid then there will be no effect on the amino acid being formed.

<em>For example, the code GUA makes the amino acid Valine. If a mutation occurs and the code becomes GUU instead of GUA, then the resulting amino acid formed will also be Valine. Hence, there will be no alternation in the formation of the protein.</em>

Answer 3:

Melanoma cancer is the type of skin cancer which is associated with cancer from sun light. It is mainly caused due to the harmful ultraviolet rays which act as a mutagen.

<em>The mutations might keep coming back because although the growth have been removed, the other skin cells of the body might still have the mutation in them. As a result, growth will be seen again in the skin cells which might occur again and again. </em>

<em />

Explanation:

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Complete question:

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The _____ Thory of disease asserted that many human diseases were the result of infection with microbes ,as opposed to other non
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