Biology, 23.04.2020 01:05 Mathewcastillo88

What interactions contribute the most to holding the two strands of dna together?

Answers: 2

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Answer from: MoparorNocar061401

Mainly by Hydrogen bonds and the Van der Waals forces

Explanation:

The DNA double helix (both strands of DNA) are held closs together by i) mainly hydrogen bonds between complementary bases and ii) the Van der Waals base-stacking interaction.

The hydrogen bonds between the base pairs form the double helical structure of DNA. There is no exchange or sharing of electrons in hydrogen bonds.

G always pairs with C with three hydrogen bonds and T always pairs with A with two hydrogen bonds.

Answer from: richardgibson2005

Hydrogen Bonds

Explanation:

In DNA double helix structure , there's four nitrogen bases Adenine , Thymine, Cytosine and Guanine . Hydreogen bonds formed between these nitrogenous base in DNA . In DNA double helix , two hydrogen bonds exist between Adenine and Thymine while three hydrogen bond exist between Cytosine and Guanine . Pairing of nitrogen bases in DNA double helix is very specific and this specific and selective pairing results in 'complementary base pairing ' . Hydrogen bonds doesn't involve in sharing of electrons , it occur over short distance and it can be formed and broken easily . In DNA double helix , hydrogen bond is weaker but still contribute the most to holding the two strands of DNA together because hydrogen bonds present excessively in between the DNA double helix .

Answer from: Quest

events in order:

1. vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.

Answer from: Quest

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )

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