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Vera_Pavlovna [14]
3 years ago
7

The idea that, when life originated on earth, a macromolecule other than dna served the role of information storage and that thi

s same macromolecule carried out catalysis is called the _____ hypothesis.
Biology
1 answer:
svet-max [94.6K]3 years ago
4 0

The RNA world hypothesis states that the earlier life-forms had relied only on RNA (Ribonucleic Acid) for the purpose of catalyzing the chemical reactions, and storing the genetic information. This hypothesis was proposed by Leslie Orgel, Carl Woese, and Francis Crick.

This hypothesis states that long before the living forms evolved to use DNA as the genetic storage material, the RNA molecules served the purpose of both storing the genetic information and carrying out catalysis, but because of its instability, DNA evolved.

Hence, the answer is RNA world hypothesis.

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If the original color is blue, then its color afterimage would be
Pani-rosa [81]
The correct answer is the color yellow.
An afterimage is best described as a photograph that continues to seem in a single's imaginative and prescient after the publicity to the original picture has ceased. An afterimage may be a ordinary phenomenon or may be pathological. Illusory palinopsia can be a pathological exaggeration of physiological afterimages. Afterimages arise due to the fact photochemical activity in the retina keeps even whilst you are no longer experiencing the unique stimulus.
7 0
4 years ago
The brain stem consists of the ________. The brain stem consists of the ________. cerebrum, pons, midbrain, and medulla midbrain
skelet666 [1.2K]

Answer:

midbrain, medulla, and pons

Explanation:

The brainstem (also known as truncus encephali) is localized in the posterior part of the brain, in the base between cerebral hemispheres and the cervical cord. <em>It's divided into three parts, the midbrain or mesencephalon, the pons or mesencephalon, and the medulla oblongata also known as long medulla or myelencephalon.</em> <em>In the image I added you can see the brainstem structure.</em>

Some of the brainstem functions include the regulation of respiratory and cardiac function, thermoregulation, and other functions related to vision, sleep, etc.

I hope you find this information useful and interesting! Good luck!

3 0
4 years ago
When was the first pocket mice found on a volcano year ?
Delvig [45]
Can you re state the question it’s confusing
3 0
3 years ago
Which element is found in nucleic acids but not in proteins?
fenix001 [56]

Phosphorus is the element found in nucleic acids but not in proteins.

<h2>Further Explanation </h2><h3>Proteins  </h3>
  • Proteins are one of the major biomolecules that exists in nature.
  • They are made of amino acids which are the building blocks. Amino acids contain four different elements which include;
  1. Hydrogen  
  2. Oxygen  
  3. Nitrogen
  4. Carbon
  5. Some amino acid contains sulfur element.
<h3>Nucleic acids</h3>
  • Nucleic acids are one of the four major bio-molecules in nature. Nuclei acids is divided into two; RNA and DNA.
  • The building blocks of nucleic acids are Nucleotide bases which are made by a nitrogenous base, a sugar and a phosphate group.
<h3>DNA  </h3>
  • DNA is a nuclei acid that is responsible for carrying genetic information in living organisms.
  • It is through DNA that genetic information is passed from one organism to another through the process of DNA replication.
  • Additionally, it carries the information that is used to make proteins which performs various functions in living cells.
  • Each Nucleotide in DNA contains a nitrogenous base, a deoxyribose sugar, and a phosphate group.
  • DNA molecules are made up of nitrogenous bases; Adenine, Guanine, Cytosine and Thymine.
<h3>RNA </h3>
  • Ribonucleic acid (RNA) is a type of nucleic acid, a molecule that plays a major role in the flow of information from the DNA to the proteins. For a gene to be expressed information has to be passed through the RNA.
  • Each nucleotide in RNA contains a nitrogenous base, a ribose sugar, and a phosphate group.
  • Nitrogenous bases in RNA includes; Adenine, Guanine, Cytosine and uracil. Thymine in DNA is replaced with Uracil.

Keywords: DNA, RNA, Nitrogenous bases  

<h3>Learn more about:  </h3>
  • Nucleic acid: brainly.com/question/2416343
  • RNA structure: brainly.com/question/2416343
  • DNA structure: brainly.com/question/2416343

Level: High school

Subject; Biology

Topic; Nucleic acids

Sub-topic: RNA and DNA structure

6 0
4 years ago
Read 2 more answers
What are the monomers for each of the 4 biomolecules?
Elena L [17]

Answer:

protiens: amino acids

lipids: fatty acid and glycerol

carbohydrates: monosaccharides

nucleic acid: nucleotides

Explanation:

7 0
2 years ago
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