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
DedPeter [7]
3 years ago
7

Which statement about RNA is not true? Uracil is found in RNA as one of the two pyrimidine nitrogenous bases. RNA possesses cata

lytic activity, which earned it the name "ribozyme." RNA is thought to have dominated early life on earth, serving as both genetic information and as a catalyst. RNA is a more stable molecule than DNA. RNA typically consists of a single polynucleotide strand with distinct secondary structures.
Biology
2 answers:
Alla [95]3 years ago
6 0

Answer:

RNA is a more stable molecule than DNA

Explanation:

This is a false statement. DNA is far more stable than RNA.

This is  because of  the stability provided by the presence of double helix  strands held by  hydrogen bonds holding the purine and pyrimidine bases  is shape,which releases free energy for   thermodynamic  stability.

it is also stable because of the  interaction of the  hydrogen bonds with the surrounding  water molecules in the  cells.

The presence of Thymine instead of Uracil in DNA is additional factor to DNA stability, because Thymine has resistance to photochemical mutations compare to U in RNA. Thus  genetic code encoded in DNA molecule  is more stable against mutation  compare to RNA.

Furthermore, the phosphodiester  bonds holding the alternate backbone of phosphate and sugar further provided needed stability.

RNA is made up of single strands, made up of Uracil base  of low resistance to photochemical mutations, OH-groups in position 2 of its ribose sugar which makes it to easily hydrolysed in alkaline solution. These factors makes it less stable compare to DNA.

mash [69]3 years ago
4 0

Answer: RNA is a more stable molecule than DNA

Explanation: DNA (deoxyribonucleic acid) is much stable than RNA (ribonucleic acid) for many reasons; Frist of all its because of the double strand of the DNA versus the single-stranded RNA. This is thanks to the Hydrogen bonding between bases since those bondings release free energy that allows the molecule to be provided by more thermodynamic stability.

Also the lack of 2′ OH groups makes DNA more stable since the OH groups are very reactive by themselves. In the DNA sugar molecule there is not a spare OH group that could start reacting on its own. So this is why DNA is immune to chemical reactions, while RNA (having an extra OH group) is more chemically "promiscuous".

You might be interested in
Which answer is not a mechanism for evolution
OlgaM077 [116]
Mutations are not a mechanism for evolution.
7 0
3 years ago
Read 2 more answers
Can you tell the difference between electromagnetic and mechanical waves?
mart [117]

Answer:

Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.

Explanation:

8 0
2 years ago
How the data from the temperature experiment supports your hypothesis.
Kipish [7]
Wheres the picture for this
4 0
2 years ago
If you breathe heavily on a plant, does that increase the rate of photosynthesis?
koban [17]

Answer:

no

Explanation:

they absorb our oxygen by the wind that blows so they can keep alive

3 0
2 years ago
“The rest is lost largely through metabolic processes as heat.”
stepladder [879]

Answer:

The rest is lost generally through metabolic cycles as warmth.

Hope this helps you. Do mark me as brainliest.

3 0
2 years ago
Other questions:
  • Why do u think the bird populations decreased sharply after the rattlesnakes were eliminated?
    15·1 answer
  • True or False. The more threads a screw has the greater the holding power of the screw.
    10·2 answers
  • If two organisms have different traits, then they probably
    10·1 answer
  • Brainly me help wala option kha hota hai​
    10·1 answer
  • What are the products of aerobic cellular respiration? Check all that apply.
    13·1 answer
  • Which of the following conditions would lead to a snall population size?
    15·1 answer
  • 2. Despite differences in size and shape, all cells have
    13·1 answer
  • Name the tiny free floating organisms that live in both fresh water and salt water
    5·1 answer
  • Do all fossils contain intact dna that can be sequenced.
    14·1 answer
  • the transfer of genes from donor to recipient in microorganisms, where the recipient strain shows a change in genetic makeup at
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!