1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
spin [16.1K]
3 years ago
6

If you were to try and pair a thymine with a cytosine (a non Watson-Crick base pairing), then would you expect to see any stabil

ity with respect to the hydrogen bonding (assuming the geometrical configurations of both bases were favorable to each other)? If yes, then how many hydrogen bonds could form between these two bases?
Biology
1 answer:
Artyom0805 [142]3 years ago
7 0

Answer:

Yes, two hydrogen bonds could form between thymine and cytosine.

Explanation:

Cytosine is a pyrimidine base found in both DNA and RNA, and Thymine is a pyrimidine base found in only DNA. Electronegative Oxygen and Nitrogen atoms with free lone pairs are potential hydrogen bond acceptors. Hydrogen atoms attached to very electronegative atoms like Oxygen and Nitrogen have strong partial positive charge and are potential hydrogen bond donors.

One hydrogen bond could form between the C4 carbonyl group on thymine which is a hydrogen bond acceptor and the C4 amino group on cytosine which is a hydrogen bond donor. Also, another hydrogen bond could be formed between N3 of thymine which is a hydrogen bond donor and the N3 of cytosine that is a hydrogen bond acceptor.

It is important to note that hydrogen bond cannot be formed between them because the C2 carbonyl groups found on both bases are both hydrogen bond acceptors.

You might be interested in
17. What is pathogenic bacteria? How does it infect an organism?
deff fn [24]
<span>Pathogenic bacteria are the disease causing bacterias
Infection occurs when </span>viruses<span>, </span>bacteria<span>, or other </span>microbes <span>enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a </span>result<span> of infection, and </span>signs and symptoms<span> of an illness appear.</span>
7 0
3 years ago
In the late 1980s and early 1990s, the percentage of Icelandic children whose bacterial infections were caused by bacteria resis
Nadya [2.5K]

Answer:

The correct answer would be - "bacterial populations evolve in response to the selection pressure imposed by antibiotics".

Explanation:

The given information provided in the question about the bacterial infection supports the hypothesis that the bacterial population shows the evolution in response to the selection pressure caused by the antibiotics due to the fact that bacteria increased resistance gradually with time. This resistance towards antibiotics increased the percentage of bacterially infected children in the late 1980s and early 1990s.

In this case, the population of bacteria having resistance genes is selected to evolved selected to increase their offsprings.

5 0
3 years ago
5 Points! Heating an object to a higher temperature increases that object's:
-BARSIC- [3]
The answer here is , A. Thermal energy
4 0
3 years ago
Read 2 more answers
Estupefacientes o psicotrópicas productoras de dependencia física o síquica, capaces de provocar graves efectos tóxicos o daños
gladu [14]

Answer:

Drogas.

Explanation:

Las drogas son sustancias que tienen un efecto modificatorio sobre el estado normal de la psique. Por tanto, estas sustancias influyen en el comportamiento o la experiencia del usuario, pudiendo tener un efecto alucinógeno, pero también sedantes o una mixtura entre ambos.

El término se usa generalmente para indicar sustancias que tienen un efecto muy fuerte (por ejemplo, heroína, cannabis, mescalina, alcohol). Aunque los estimulantes cotidianos como el café y el chocolate también pueden tener un efecto en la psique, generalmente no se clasifican como sustancias psicoactivas debido a su efecto relativamente leve.

Los medicamentos que tienen un efecto sobre la psique se denominan psicofármacos. No obstante, los medicamentos que no se clasifican principalmente como psicofármacos, como los antihistamínicos, los agentes anti-mareo y los betabloqueantes, pueden también tener un efecto psicotrópico.

5 0
3 years ago
a meniscus in a test tube forms when water curves slightly upward at the edge near the glass. This is due to
Bingel [31]
Volume the volume of the test tube is approximately 35cm so the water is 20m/cw   idk if this helps
8 0
3 years ago
Read 2 more answers
Other questions:
  • A nurse is caring for a client with heart failure. the healthcare provider prescribes a 2-gram sodium diet. what should the nurs
    10·1 answer
  • Malaria is a disease caused by a protist that requires one host to complete its life cycle.
    6·1 answer
  • The integumentary system has many functions, one of which is multiple choice production of vitamin
    9·1 answer
  • What are spring tides?
    5·2 answers
  • What is chemistry?
    11·2 answers
  • Chromosomes that carry the same corresponding genes at the same loci are said to be ---------.
    14·2 answers
  • Artificial selection is an organism, cell, or piece of genetic material that is genetically identical to the one from which is w
    9·1 answer
  • How was the Earth different 4.6 billion years ago than it is today
    14·1 answer
  • PLEASE IM BEGGIN YOU CAN YOU HELP
    10·2 answers
  • "How is it possible that siblings with the same parents can have such different traits, such as skin tone?"
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!