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elena55 [62]
4 years ago
12

If an incorrect nucleotide is incorporated once per thousand nucleotides, proofreading normally catches 999 incorrectly incorpor

ated nucleotides per thousand, and mismatch repair detects 999 residual replication errors per thousand, leading to a 1 per billion error rate for replication as a whole. What will be the overall error rate of replication in a strain of E. coli that has an intact mismatch repair pathway but has a mutation in DNA polymerase that results in it having no proofreading activity?
Biology
1 answer:
lilavasa [31]4 years ago
3 0
Huh? What do you mean
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How do human beings negatively affect the carbon cycle?
andre [41]

Answer:

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.

Explanation:

Brainliest please?

7 0
3 years ago
Which part of the chemical equation is incorrect
elena-14-01-66 [18.8K]

The answer is 10 O2, it should de 13 O2.

To know if a reaction is well balanced between the reactants and the products, you have to calculate the number of atoms of each element on both sides of the reaction and to check if they are equal.

*For carbon, on both sides, there are 8 carbon atoms.

*For hydrogen, on both sides there are 20 hydrogen atoms.

*For oxygen, there are 20 oxygen atoms in the reagents and 26 in the products, so it is necessary to increase the number of oxygen in the reactants (without touching the others). For this we put 13 O2 in the reactants instead of 10, to have 26 oxygen atoms on each side.

3 0
3 years ago
relationship between lactobacillus bulgaricus and streptococcus thermophilus under whey conditions: focus on amino acid formatio
fredd [130]

The discussion of relationship between lactobacillus bulgaricus and streptococcus thermophilus under whey conditions: focus on amino acid formation is given in the below paragraph-

In this study, we used Lactobacillus delbrueckii subsp. bulgaricus 2038 grown with or without Streptococcus thermophilus in whey medium to conduct microarray experiments to examine how these two strains use nitrogen since Lb. bulgaricus 2038 uses whey as its nitrogen before casein. Because S. thermophilus primarily preferred different types of peptides than L. bulgaricus, but has lost the ability to prioritize the use of free branched-chain amino acids, L. bulgaricus 2038 was better able to import the types of peptides required for growth compared to monoculture.

In order to stop Lb. bulgaricus 2038 from converting aspartate into intermediates that form the carbon skeleton, which is catalyzed by phosphoenolpyruvate carboxykinase, the ratio of nitrogen to carbon was reduced during co-culture.

<h3>What is an amino acid?</h3>

Organic substances known as amino acids have both functional groups for amino and carboxylic acids. Alpha-amino acids, which make up proteins, are by far the most common amino acids in nature despite the fact that there are hundreds of them. The genetic coding only contains 22 alpha amino acids.

The locations of the primary structural functional groups in amino acids can be categorized as alpha, beta, gamma, or delta amino acids; further classifications relate to polarity, ionization, and the type of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.).

To learn more about amino acid with the help of given link:

brainly.com/question/2526971

#SPJ4

6 0
2 years ago
Blood cells are <br> in shape because they lack a nucleus.
Nitella [24]

Explanation:

blood cells are BICONCAVE DISK in shaped because they lack nucleus

4 0
3 years ago
Cacti grow slowly due to the fact that they keep their stomata closed for much of the day. Why would closing their stomata durin
djverab [1.8K]
I believe the answer is A
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