A mutation in yeast makes it unable to convert pyruvate to ethanol. how will this mutation affect these yeast cells?

1 answer:

7 0

The answer to the question "A mutation in yeast makes it unable to convert pyruvate to ethanol. how will this mutation affect these yeast cells" is "a" the mutant yeast will be unable to grow anaerobically.

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What happens when previous adaptations are no longer suitable for changes in the environment

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In recombinant dna experiments, what is used to cut pieces of dna and what joins the resulting fragments to form recombinant dna

jonny [76]

DNA fragments are cut out restriction enzymes (restriction endonucleases) and then joined together using enzymes called DNA ligases.

Restriction enzymes are enzymes which recognize target sequences (recognition sites) and cuts DNA at or near those sequences.

DNA ligase is an enzyme that connects the gap between the molecules (if they have matching ends).

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Like mammals, dolphins breathe air, but they are born underwater. Which is an innate behavior that a dolphin uses to breathe for

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2 Points What do bacteria have in common with the cells of other living organisms?

Anon25 [30]

Answer:

Bacteria have cytoplasm and ribosomes which are common with the cells of other living organisms.

Explanation:

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Read 2 more answers

Boris Magasanik collected data on the proportion of each base in RNA from different species. To compare the relative amount of e

just olya [345]

Answer:

The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).

In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.

The purine to pyrimidine ratio in RNA with different bases is given below in the following table:

Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.

Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.

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3 years ago