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3 years ago

A key discovery leading to the structure of dna was done by chargaff. He found that ____. Select all that apply.

Biology

1 answer:

tresset_1 [31]3 years ago

5 0

Answer;

A. The amount of A equals the amount of T, and the amount of G equals the amount of C

C. The tetra nucleotide hypothesis is false

Explanation;

Chargaff's rule states that DNA from any cell of any organism has a 1:1 ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine, a purine base, is equal to cytosine, a pyrimidine base; and the amount of adenine, a purine base, is equal to thymine, a pyrimidine base.

Chargaff's rules are important because they point to a kind of “grammar of biology”, a set of hidden rules that govern the structure of DNA.

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2 years ago

The Go' for the reaction Citrate  Isocitrate is +6.64 kJmol-1 . The Go' for the reaction Isocitrate  α-Ketoglutarate is -267

xz_007 [3.2K]

Answer:

ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64 kJmol-1

Explanation:

ΔG°' for Citrate is +6.64 kJmol-1

ΔG°' for Isocitrate is -267 kJmol-1

ΔG°' for the conversion of citrate to α-ketoglutarate = ΔG°' for product - ΔG°' for reactant

ΔG°' for the conversion of citrate to α-ketoglutarate = -267 kJmol-1 - (+6.64 kJmol-1)

ΔG°' for the conversion of citrate to α-ketoglutarate = - 273.64 kJmol-1

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