Many scientific explanations for the origin of DNA and life have been proposed over the years. These hypotheses explain how
inorganic molecules became organic monomers, such as amino acids, sugars, phosphates, and bases. But this still didn't explain
where living things came from. If macromolecules were able to form on early Earth, this still leaves us with the question of how
the polymers would have become self-replicating, a basic criteria for life. There are several ideas but little certainty. Some of the
common ideas include: the RNA world hypothesis, the genes first hypothesis, and the metabolism first hypothesis."
Which of these statements is proposed by the genes first hypothesis?
A)
RNA is highly stable.
B)
The first life forms were self-replicating nucleic acids, such as RNA or DNA
RNA is able to store and pass on genetic information.
D)
RNA contains less nitrogen bases than DNA and thus, is a simpler molecule.
E)
Ribosomal RNA (TRNA) and transfer RNA (TRNA) are the primary molecules
responsible for protein synthesis.
The first life forms were self-replicating nucleic acids, such as RNA or DNA, RNA is able to store and pass on genetic information.
What is the difference between RNA and DNA?There are two differences that determine DNA from RNA,
(a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose, and
(b) RNA has the nucleobase uracil while DNA contains thymine.
Thus, options, A and C are correct, RNA is adapt of both storing genetic data and catalyzing chemical responses.
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Contrast primary succession and secondary succession. Give an
example of each.
Answer:
Some examples of primary succession include the formation of a new ecosystem after a volcano, glacier outbursts, or a nuclear explosion. Some examples of secondary succession include succession after fire, harvesting, logging, or abandonment of land or the renewal after a disease outbreak
Wave energy is a. Another name for tidal energy. C. A clean, renewable resource. B. Used around the world. D. Run by computer programs. Please select the best answer from the choices provided
Answer:
A; another name for tidal energy
Explanation:
The wave energy comes from the movement of the sea or ocean tides.
It is the energy that can be obtained from the movement of the tides of the ocean or sea.
It is the energy that we can get as a result of the rise and progression including the retraction and fall of the sea waves.
Please Help I willl mark Brainlist Please
Answer:
4 I think
Explanation:
The cytoplasm is home to many activities of the cell as it contains molecules, enzymes that are crucial in the break down of the waste. The cytoplasm also assists in metabolic activities. Cytoplasm provides shape to the cell. It fills up the cells thus enabling the organelles to remain in their position.
Plants produce oxygen which animals use. Animals produce carbon dioxide which plants use. Predict the most likely outcome if airborne pollution blocked the sun’s rays so significantly that the percentage of living plants was decreased by 95%.
A. Plants would quickly evolve to consume a mixture of oxygen and carbon dioxide
B. Animals would quickly evolve to begin using carbon dioxide
C. The atmosphere would fill with carbon dioxide, and animals would begin to die.
D. The atmosphere would fill with oxygen, and animals would begin to die.
Answer:
C
Explanation:
A can’t happen because there are barely any plants
B can’t happen because Animals need Oxygen to breathe
D won’t happen due to lack of plants
PRODUCT
OR
11. (Circle one) Oxygen is a
released?)
REACTANT
of respiration? (In other words, is it needed or
Answer: ?
Explanation:
In these chemical equations, each letter represents a different element.
Which equation is balanced?
A. 2EF + 3G2H
3GF + E2H3
B. 2EF3 + 3G2H → GF + E2H3
C. EF + G2H + EH + 2GF
D. 3E2F+G2H3 + 3EH + G2F3
Answer: B. 2EF3 + 3G2H → 6GF + E2H3
Explanation:
In these chemical equations, each letter represents a different element the correct equation is B. 2EF3 + 3G2H → GF + E2H3.
What is the balanced equation?A balanced equation is an equation for a chemical response wherein the wide variety of atoms for every detail withinside the response and the overall fee is the identical for each the reactants and the products. In different words, the mass and the fee are balanced on each aspects of the response.
Here this equation is balance 2EF3 + 3G2H → GF + E2H3 as all are balanced.
Read more about the element:
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First to answer gets brainliest!!!!!
For this scenario, determine if it is a Harmful, Neutral or beneficial mutation.
NO LINKS OR BAD ANSWERS!!!!!
Answer :Neutral
Explanation: Ability keeps them from growing over 4 feet. but does prevent Alzheimer's,diabetes,and cancer
Substance A is a gas and substance B is a liquid, They are at the same temperature why is one gas and one a liquid
For each sequence of DNA is shown. Write the complementary RNA sequence underneath the letters, then use the codon chart to determine the amino acid sequence. DNA: ACA TTT CAG ACC GTG
Answer:
If youre doing the complementary RNA strand of DNA is would be for example
DNA: A T C G G
RNA: U A G C C
*remember that in RNA the A is complementary U instead of T*
so when you get that done you use every three letters of the *RNA* sequence and match it to the codon chart
Explanation:
i hope this helps!! btw can you help me with my rough draft i really need some help and i'll give you 30 0r more points for it
Arturo ran a 3,000-meter race. His running time from start to finish was 10 minutes. What was Arturo's average speed?
Answer:
300 meters/min
Explanation:
average speed = distance / time
(3000 m) / (10 min) = 300 meter per minute
if you need it in meters/sec then just multiply 10 by 60 first and then continue
(3000 m) / (600 sec) = 5 m/s
liver damage leads to impaired digestion of fats .explain the statement
Answer:
the liver has multiple functions in the body but its main function is to process nutrients that are absorbed from the small intestine.
Someone please bro me !!
Answer:
i think the answer is b.
Explanation:
tell me if this is incorrect
Answer:
The second one
Explanation:
A thesis statement is usually at the end of an introductory paragraph. The sentences that precede the sentence will introduce it, and the sentences that follow will support and explain it.
explain how the last food chain represents a full circle of life
Answer:
the last food chain is the last predator of the enature food chain which ends that particular food chain and inturn the circle of life
The last food chain represents a full circle of life by:-
Detritivores and decomposers are the final part of food chains. Detritivores are organisms that eat dead plant and animal remains. Energy is passed from plant to animal to animal to decomposer and back to plant.What is food chain?The food chain describes who eats whom in the wild. Every living thing needs food to survive.Each food chain is a possible pathway that energy and nutrients can follow through the ecosystem.To know more about food chain here
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Do you think aluminum foil is a good insulator or conductor? Why? Give data ( I'm talking about numbers here)
Answer: hewo, There! your Answer is Below ;w;
aluminum foil reflects the emission of heat, it tends to be a better insulator than other materials that just slow down the flow of heat from one area to another. So It is a Good Insulator,
Explanation:
aluminum foil is a good insulator because it prevents the radiation of heat by reflecting it back at the source.
Hope this helps!
Have a great day!!!
-August-
Nondisjunction that occurs during meiosis II produces what?
Answer:
Both of these daughter cells will then go on to divide once more in meiosis II, producing 4 daughter cells, 2 with n+1 and 2 with n-1. Nondisjunction in meiosis II results from the failure of the sister chromatids to separate during anaphase II.
a retionship where both species benefit is called
Answer:
Mutualism is a symbiotic relationship in which both species benefit.
Explanation:
The offspring from asexual reproduced organisms are?
Answer:
Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. A single individual can produce offspring asexually and large numbers of offspring can be produced quickly.
Explanation:
(not sure if this is what you wanted)
Why do we use pH and the pH scale?
Answer:
We use pH as a measurement of how acidic something is. pH scale is what we use to determine how acidic it is. i tried hope it helps:)
Explanation:
PLEASE HELP I NEED HELP (Plant related / Project stuff)
Answer:
B, D, A, E, C
Explanation:
1. environmental factors
2. growth
3. adaptation
4. organism
5. genetic factors
As the masses of two objects increases, the force of gravity between them_____.
Answer:
Increases
Explanation:
As the mass of either object increases, the force of gravitational attraction between them also increases.
A type of circuit that has only one path is called a —
Group of answer choices
series circuit
parallel circuit
open circuit
closed circuit
The answer is series circuit.
Trees in a temperate deciduous forest compete for all of the following EXCEPT -
A sunlight.
B shelter.
C soil.
D water.
Answer:
B
Explanation:
Trees needs sun, soil (nutrients), and water to grow and become strong.
I hope this helps ^-^
Why must you consume carbohydrates in the foods you eat? How does this relate to cellular respiration?
Complete the following analogy.
Family is to population, as house is to _____.
niche
habitat
community
biome
Answer:
Habitat makes the most sense hope this helps if it's right cann i get me pls 5star :DExplanation:
brainliest?HELP AGAIN
askjcnoianlkscnoxicn
Answer:
a hope it helps make brainlliest ty
Explanation:
make free póínts again please
This is a question that has been confusing - In addition to carbon dioxide, what other two ingredients does a plant need for photosynthesis?
Answer:
Carbon dioxide, water and sunlight
Answer:
water and sunlight
Explanation:
Examine the graph showing a comparison of transportation and emissions trends in the United States over the years 1980-2015.
Which statement best describes the trend for the six common pollutants, as shown in the graph?
A)
B)
The Clean Water Act addressed the six major pollutants that were
damaging the ecosystems.
The decline in vehicle miles traveled and US population correlates with a
drop in air pollution
The 1990 amendments to the Clean Air Act addressed the sources of acid
rain, smog, and toxic air pollutants.
A conversion to 100% renewable resources for energy harnessing and
electricity production caused a reduction in air pollution.
C)
D)
In protein synthesis, how many nitrogenous bases code for a single amino acid?
one
two
three
four
Answer:
C
Explanation:
EDGE 2022
If forests are strictly managed according to the maximum sustainable yield model, some biodiversity would still be lost because ________. species whose habitat depends on mature trees in the top canopy layer will be excluded forests are more susceptible to herbivore damage habitats for nesting birds are lost all the trees are of mature size leaving no room for new seedlings nearly all predators will be excluded
Answer: species whose habitat depends on mature trees in the top canopy layer will be excluded
Explanation:
The maximum sustainable yield refers to a biological resource maximum usable production which can be gotten at a particular period of time without the ability of the resource maintaining that particular production level reduced.
If forests are strictly managed according to this model, some biodiversity would still be lost due to the fact that species whose habitat depends on mature trees in the top canopy layer will be excluded.
