The correct answer is Ribosomes is the single molecule that could do both cellular work and replicate itself.
Ribosomes have two primary functions: message decoding and peptide bond formation. The ribosomal subunits are made up of two large ribonucleoprotein particles (RNPs) of unequal size. Each subunit is composed of one or more ribosomal RNAs (rRNAs) and a large number of ribosomal proteins (r-proteins). The ribosome is an ancient molecular fossil that can be used to peer into the origins of life. In all living systems, the ribosome, which is composed of RNA and protein, converts mRNA to coded protein. Translation is infused with universality, economy, centrality, and antiquity. Because the ribosome is so important to all aspects of life and reproduction in an organism, rapid change is unlikely to survive. The ribosome components are an excellent resource for studying the evolution of all organisms because all cellular organism have ribosomes .
Based on a number of considerations, it is hypothesized that at some time in the evolution of life, there must have been a single molecule that could do both cellular work and replicate itself. A possible molecule that has been suggested is a catalytic RNA molecule, now called a ?
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Olivia earned 24 out of 30 points on her chemistry exam. What percent of the points did Olivia earn?
Answer:
80%
Explanation:
Where did the water cycle begin?
Answer:
The water cycle has no starting point. But, we'll begin in the oceans, since that is where most of Earth's water exists.
How do guard cells maintain homeostasis?
Answer:
Explanation: Guard cells in the plants prevent water loss from it in cases of soil dryness or high temperature by closing themselves. If this does not happen, water will keep leaving the plant by the process of transpiration in these harsh conditions and the plant will not have the important medium for the homeostasis process to continue.
1 point
Many of the sun's rays may be PARTIALLY blocked by dust or clouds
formed by volcanic eruptions or pollution. What are some possible short-
term effects of this on photosynthesis?
Photosynthesis will happen faster/more
Phstosynthesis will happen slower/less
Photosynthesis will NOT happen at all
Nothing will change
Answer:
B. Photosynthesis will happen slower/less
Explanation:
Option B is the possible short-term effect on photosynthesis when the sun's rays are partially blocked.
Photosynthesis is the process whereby plants manufacture their own food with the use of sunlight and carbon dioxide. When this occurs, (energy in form of glucose) and oxygen are produced. The oxygen is released for animals to use.
Photosynthesis makes use of sunlight. But if sunlight is partially blocked, the process by which photosynthesis occurs becomes slow or less. This is because as the sunlight is partially blocked, there is no adequate supply of sunlight to carry out photosynthesis.
animals and plants found in different biomes have special to help them survive their
help? giving 25 points
Answer:
% Normal chin (NN) - 25%
% Normal chin (Nn) - 50%
Explanation:
Create a punnett square using Nn and Nn. Since both mom and dad have a dominant trait, but carries that recessive trait, it is considered "Nn".
N n x N n = NN, Nn, Nn, nn
% Normal chin (NN) - 25%
% Normal chin (Nn) - 50%
% Abnormal chin (nn) - 25%
Islands are home to many of the world's rare species. Which of the following factors contributes most
to this situation?
a small land area
b. geographic isolation
C. limited food source
d fewer predators
Answer:
b geographic isolation
The ocean stores carbon from its interactions with the atmosphere, so the ocean serves as (a) _________ for the carbon cycle.(1 point)
carbon dioxide
carbon source
carbon flux
carbon sink
Answer:
Carbon source.
Explanation:
The ocean is storing carbon, it is a carbon source.
It's storing the carbon until it's needed in the carbon cycle.
wei, s the extent of the human germline t-cell receptor v β gene segment repertoire, 1994, immunogenetics, 40, 27-36.
Based on the identification of T-cell receptor B variable gene segments in genomic DNA an estimation of the size of the human T-cell receptor B variable gene segment repertoire was embarked upon.
PCR amplification from uncloned and cloned genomic DNA sources, Southern blot hybridization, nucleotide sequencing, and cosmid cloning were used to identify T-cell receptor B variable gene segments in numerous irrelevant individuals. The benefits of this strategy lead to many findings such as there was a possibility of discriminating between alleles at the products of different loci and the same locus, T-cell receptor B variable gene segments c expressed at very low levels in libraries of Complementary DNA are detectable. 63 unique T-cell receptor B variable gene segments were sequenced and identified .Out of 63 , 51 contained Thirty-four cosmid clones which were isolated and later filtered for the existence of further T-cell receptor B variable subfamily members.The results were that human T-cell receptor B variable germline repertoire encodes at least 63 T-cell receptor B variable gene segments out of which 52 are functional.
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During which phase of the moon do neap tides occur? full gibbous new quarter
Answer:
The answer is D
Explanation:
The neap tides occur during a phase of the moon called the quarter phases, This is further explained below, Option D is correct.
To find the tides we need to know more about the phases of the moon
What are the phases of the moon?The new moon, first quarter, full moon, and last quarter are the four main lunar phases, which occur when the Moon's ecliptic longitude is at an angle to the Sun.
In conclusion, The phase of the moon neap tides occur is called the quarter
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Explain the structure of a chromosome (please)
Answer:
Chromosome structure consists of a long arm region and a short arm region connected at a central region known as a centromere. The ends of a chromosome are called telomeres. Duplicated or replicated chromosomes have the familiar X-shape and are composed of identical sister chromatids.
Explanation:
In what way are the planets mars mercury and earth similar ?
Answer:
Together with Venus, they make up the inner, rocky planets of the Solar System.
Explanation:
which is the best advice you and from whom?share.
Answer:
u should s#x more often
Explanation:
in mammals, an increase in the temperature of the preoptic area of the hypothalamus activates physiological mechanisms for heat dissipation including vasodilation.
True. In mammals, an increase in the temperature of the preoptic area of the hypothalamus activates physiological mechanisms for heat dissipation including vasodilation.
What is vasodilation?Vasodilation, as it is known in medicine, occurs when blood vessels in your body open up, enabling more blood to flow through them and resulting in a reduction in blood pressure. Without your knowledge, your body goes through a routine procedure like this. It can also be brought on by the foods and beverages you consume as well as the drugs you take. Vasodilation may also be a sign of a particular illness.
The two of the many functions that your blood serves in the body:
Carrying oxygen and nutrients Aiding in temperature regulation in your body.Your body's blood arteries are more complex than simple tubes that remain constant in size. Your blood arteries include muscle as well, and that muscle regulates how wide or narrow they are at any particular time. Vasodilation occurs when blood vessels enlarge. Vasoconstriction is the opposite process, which occurs when blood vessels narrow and contract.
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I need help and listen I will give you Brainliest just answer this question and read it twice because I really need help and so help me God if you don't answer this question fully I will report you and you will get banned for life so answer this question fully!!
Answer:
The heart consists of four chambers organized into two pumps (right and left) for the purpose of providing blood flow to the systemic and pulmonary circulations. The right atrium receives deoxygenated blood from the entire body except for the lungs via the superior and inferior vena cavae!
The heart has four chambers: two atria and two ventricles.
The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle.
The right ventricle pumps the oxygen-poor blood to the lungs.
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.
The left ventricle pumps the oxygen-rich blood to the body.
Hope this helps!
True/False: Cytoplasm helps the cell grow
What does Letter "A" represent in the water cycle? *
HELP ASAP
Answer:
Air, Atmosphere?
Explanation:
Which of these is not produced in the Calvin Cycle?
Sugar
NADPH
ООООО
с
ADP
d
АТР
e
CO2
Question 39
True or False Animal cells contain a cell wall?
what claim can the student make based on the observed cells?
Why is it important to have the three different lines of defense?
Answer:
The three lines of defense represent an approach to providing structure around risk management and internal controls within an organization by defining roles and responsibilities in different areas and the relationship between those different areas.
If hydrogen peroxide is stored in a clear glass bottle and is left to stand, it decomposes into water and oxygen.Which of the following correctly shows the balanced equation for this decomposition?
1. 2HO2-------------> 2HO + O
2. 2H2O2--------------> 2H2O + O2
3. 2H2O-----------------> 2H2O + O2
4. H2O2----------------> H2O + O
Help pls
Answer:
2. 2H2O2 -> 2H2O+ O2
Explanation:
This equation is balanced because there are equal amounts of each element on each side. 4 Hydrogen on the left, 4 On the Right. 4 Oxygen on the Left, 4 on the right.
Although 1 is balanced it is not the Chemical equation for hydrogen peroxide (H2O2)
2. is not the equation for Hydrogen Peroxide
4. Balanced although this one does not show oxygen as a gas ( when oxygen is a gas it is O2)
why is most life in the ocean concentrated near the surface? Discuss sunlight, temperature, and pressure in your answer.
Explanation:
This is because most of the living things even marine animals need heat which is suitable for them, sunlight gets more to the surface which provides heat. It's easy to live if there is low pressure in the ocean so your energy doesn't get wasted.
Use the list of words and place them under the correct category (DNA, RNA, or Both)
Deoxyribonucleic Acid, Double Helix, Uracil, Double Stranded, Deoxyribose Sugar, Thymine, Pyrimidines, Copy the Instructions and Make Proteins, Ribose Sugar, Instructions for making proteins, Located in Nucleus of Eukaryotes, Cytoplasm, Ribosomes, Nucleic Acid, 3 Types, Adenine, Nucleotide is the monomer, 5-Carbon Sugar, Phosphate Group, Guanine, Cytosine, Single Strand, Genetic Information, Ribonucleic Acid
Dna
Rna
Both
Answer:
DNA: Deoxyribonucleic Acid, Double Helix, Double Stranded, Deoxyribose Sugar, Thymine, Instructions for making proteins, Located in Nucleus of Eukaryotes, Genetic Information,
RNA: Uracil, Copy the Instructions and Make Proteins, Cytoplasm, Ribosomes, Single Strand, Ribonucleic Acid, Ribose Sugar
Both: Nucleic Acid, 3 Types, Nucleotide is the monomer, 5-Carbon Sugar, Phosphate Group, Pyrimidines, Adenine, Guanine, Cytosine,
Explanation:
DNA or deoxyribonucleic acid, and RNA ribonucleic acid are made up of nucleotides, molecules that are essential to life- DNA stores genetic information, while RNA is important for facilitating the translation of DNA's information to proteins.
Nucleotides are monomers composed of DNA, a nucleic acid that serves as a storage molecule to encode proteins, along with RNA, a ribose sugar-containing nucleotide. In nucleotides, 5-carbon deoxyribose or ribose sugar, phosphate and one of four bases of nitrogen are found:
Adenine (A)
Guanine (G)
Cytosine (C)
Thymine (T).
Uracil (U) found in RNA
DNA replication results in two identical daughter molecules each consisting of one old (original) strand and one newly-synthesized strand.
True
False
Answer:
true
Explanation:
please mark me brainliest
DNA replication results in two identical daughter molecules each consisting of one old (original) strand and one newly-synthesized strand. Therefore, it is true.
What is DNA replication?The process of duplicating the parent DNA helix into two identical daughter helices is known as DNA replication. One parent strand is passed down to each daughter strand in this semi-conservative procedure.
In prokaryotic cells, DNA replication takes place in the nucleoid area, whereas it happens in the nucleus in eukaryotic cells. Prior to cell division, DNA replication takes place in the S phase of the cell cycle.
Replication fork pairs that form at the origins of replication and then move in opposition to one another carryout genome duplication. When convergent replication forks meet, DNA replication is complete. Hence, it is true.
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The cell cycle is not regulated by proteins
Answer:
false
Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress
Explanation:
genomic landscape of ductal carcinoma in situ and association with progression. breast cancer research and treatment. 2019
Genomic landscape of ductal carcinoma in situ and association with progression breast cancer research and treatment a small fraction of DCIS patients develop subsequent invasive disease.
What is cancer?Cancer is defined as unwanted unusual growth of cell and the division of cell is not according to the pattern which leads to formation of tumor known as cancer.
The non-hodgkin's lymphoma is the cancer of limphatic system and condition occurs when a large number of abnormal lymphosides produces in the body and the lymphosides are a type of white blood cells.
The non-hodgkin's lymphoma is treatable disease and it can be treated by medical professionals. The main symptoms of non-hodgkin's lymphoma are fever, stomach, night sweats, swollen lymphnodes and loss of appetite.
Therefore, Genomic landscape of ductal carcinoma in situ and association with progression breast cancer research and treatment a small fraction of DCIS patients develop subsequent invasive disease.
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GUACUGUAC, what is the DNA Sequence?
Answer:
Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.
Explanation:
How do you get the amino acids your body uses to make proteins 
Answer:
Eating such things as eggs, animal meat.
Explanation:
It is broken down into amino acids and used to build muscle with the protein.
If a normal body cell has 12 chromosomes, how many chromosomes will a new body cell have immediately following mitosis?
A. 3
B. 6
C. 12
D. 24
What is the advantage of genetic connections and disadvantage
Answer:
A sense of relief from uncertainty.
it reduced the risk of cancer