Explica como crees que se originó la vida sobre el planeta tierra

Answers

Answer 1
Sabemos que la vida comenzó hace al menos 3.500 millones de años, porque esa es la edad de las rocas más antiguas con evidencia fósil de vida en la tierra. Estas rocas son raras porque los procesos geológicos posteriores han remodelado la superficie de nuestro planeta, a menudo destruyendo rocas más viejas y creando otras nuevas (lo siento si es un amor incorrecto, marque como más inteligente si es correcto).
Answer 2
La pregunta del cómo empezó la vida en la Tierra es una de las más difíciles (e interesantes) que se pueden plantear. De hecho, el origen de los seres vivos encierra varias cuestiones clave: ¿cuándo ocurrió?, ¿pudo producirse más de una vez?, ¿cómo fue la transición entre la química y la biología?, ¿tuvo lugar en la Tierra o fuera de ella? Y, a medio camino entre la ciencia y la filosofía: ¿fue fruto del azar o de la necesidad?

La investigación experimental sobre el origen de la vida comenzó en la década de 1950, con el trabajo de dos científicos pioneros en una disciplina llamada química prebiótica: Stanley L. Miller y Joan Oró. Las pruebas acumuladas desde entonces nos indican que la vida probablemente comenzó hace unos 3.800 millones de años, sólo 700 millones de años después de la formación de nuestro planeta. En el gran laboratorio de química que era la Tierra primitiva se sintetizaron las primeras moléculas orgánicas, que fueron organizándose progresivamente para formar otras más largas y complejas.

Related Questions

laws of thermodynamics

Answers

Answer:

The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The First Law of Thermodynamics states that energy can be converted from one form to another with the interaction of heat, work and internal energy, but it cannot be created nor destroyed, under any circumstances. The 3rd law of thermodynamics will essentially allow us to quantify the absolute amplitude of entropies.

What is wrong with this model of the atom?
n P+
Cloud Region
A. The protons are in the wrong place.
B. The neutrons are in the wrong place.
C. The electrons are in the wrong place.
D. The protons and neutrons are in the wrong place.

Answers

Answer:

A

Explanation:

The atomic massof an element is defined as (the SUM) of masses of protons and neutrons in an atom

hormones in the bloodstream

Answers

Answer:

insulin

Explanation:

Answer:

chemical messenger.

Explanation:

The MLH1 protein dimerizes with the PMS2 protein to form a complex that is involved in the correction of errors of DNA replication. Loss-of-function mutations in the genes that encode for these proteins increase the incidence of colon cancer. Which type of DNA error would be repaired by the activity of this complex

Answers

Answer:

Mismatched bases

Explanation:

have a great day!

The element with atomic number of 4 is

Answers

Answer:

Beryllium is the element with the atomic number 4.

Help!!!
I'll give brainliest the brainliest. ​

Answers

Answer:

resists the turgor  pressure of the cell:  A : cell wall

controls the activities of  the cell : C : nucleus

site of the chemical  reactions of the cell  including synthesis of  proteins:  D : cytoplasm

Answer:

1. A -  Cell Wall

2. C - Nucleus

3. B. Mitochondria

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Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don't they explode? They don'­t drink any water because they get so much from osmosis. They have adapted to live with high osmotic pressure. They urinate a lot, so the water does not build up. Their cells have adapted to absorb salt. All of the above

Answers

Answer:

They urinate a lot, so the water does not build up.

Explanation:

Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.

Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.

Write one functions of seed.​

Answers

Seeds serve several functions for the plants that produce them.

Adaptation:
Question 4
Which phrase indicates that organisms in a population with the best-adapted set of traits become more common over time?
Select one:

Mutations are not harmful.


Bigger is better.


All organisms have a common ancestor.


Survival of the fittest.

Answers

Answer:

Mutation is yes a harmful

Explanation:

What is the control for “which bait works best for a homemade fly trap?”

Answers

Answer:

A glass of water or an empty cup

Explanation:

If no flies are attracted, that means your experiment is not flawed.

What would be the resulting polypeptide chain that is produced from the DNA template code: TACTTCAAAATC? Use the following RNA codon to amino acid table to help you figure out the resulting polypeptide. Show your steps.

Answers

Answer:

Methionine- Lysine- leucine- stop

Explanation:

This question is describing the processes of transcription and translation, which are both involved in protein synthesis. Transcription is the synthesis of a mRNA molecule from a DNA template while translation is the synthesis of a polypeptide/amino acid sequence from a mRNA template.

The following DNA molecule was given as follows; TAC TTC AAA ATC. Firstly transcription will synthesize an mRNA molecule based on complementary base pairing rule. The resulting mRNA will be: AUG AAG UUU UAG

Next, the process of translation which involves the synthesis of an amino acid sequence from mRNA. Using the genetic code will produce the following:

Methionine- Lysine- leucine- stop

define ostia in science​

Answers

Answer:

Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.

Answer:

An opening, a passage.

Explanation:

science - Anatomy

Using complete sentences, explain how proximity to major rivers influenced the location of early cities.

Answers

Answer:

Locations along rivers meant faster travel upstream and downstream to rule territories. The city became the place where the ruler or rulers lived together in a stationary spot. The city's location along early rivers encouraged stronger government, which in turn encouraged stronger cities.

Rivers are one of the most crucial resources that played a major role in the development in ancient times. It led to river valley civilization that influenced the location and kingdoms.

What is river valley civilization?

The river valley civilization was one of the most important events that led to the establishment of many kingdoms and regions. The proximity to the river banks influenced many factors.

The cities located on the riverbanks have greater development in services including import, export, travel, agriculture, accessibility, etc. This allowed the people to practice agriculture on a large scale due to the availability of the irrigation system.

The river banks allowed the cities to grow as major trade centers and allowed downstream and upstream travel easier. This also led to the emergence of strong government systems.

Therefore, the proximity to major rivers led to river valley civilization.

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Which chemical bond is most common in living things? a. ionic bond b. metallic bond C. covalent bond d. hydrogen bond​

Answers

Answer:

hydrogen bond

Explanation:

i think because humans have water in the body that has hydroden maybe

explain how bacteria cam develop resistance to an antibiotic?

Answers

Explanation:

Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.

hope this helps you

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what was invented in the late 16th century that allowed scientists to study organisms at a new level

Answers

Answer:

compound light microscope

Explanation:

:)

The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.

Thus, The microscope revolutionized the field of biology by enabling researchers to observe and study tiny structures, cells, and microorganisms that were previously invisible to the eye.

This technological advancement marked a significant milestone in the history of science.

It paved the way for discoveries and insights into the microscopic world of living organisms.

Thus, The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.

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biological term for control of the body temperature​

Answers

Thermoregulation is a process that allows your body to maintain its core internal temperature. All thermoregulation mechanisms are designed to return your body to homeostasis. This is a state of equilibrium

Why is it difficult to bond three phosphate groups to Adenosine?

They have the same charge and repel each other.

They form a strong attraction to each other.

They are like opposite poles of a magnet.

The energy is evenly dispersed across all three bonds.

Answers

I think that answer is they are like Opposite poles of magnet.

I really hope it’s right

8. How is penicillin used?
O to make cheese
O to kill protists that cause disease
O to kill bacteria that cause disease
O to make bread rise

Answers

Answer:

O to kill bacteria that cause disease

Explanation:

penicillins are a group of antibiotics used to treat a number of bacterial infections.

hope this helps!

Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species because
they behave differently
Othey have different characteristics
Othey cannot successfully reproduce
Othey exist within the same ecosystem

Answers

They are separate species because they have different characteristics.
Which means their adaptation methods will be different.

Natural selection is that the process through which populations of living organisms adapt and change.

What are the adaptations behavior in organisms?

Many animals are well adapted to biotic and abiotic conditions due to behavioral, physiological, or structural adaptations that increase their chances of survival and reproduction.

Behavioral - responses made by an organism that help it to survive/reproduce.

.

Physiological - a bodily process that helps an organism to survive/reproduce.

Structural - a feature of an organism’s body that helps it to survive/reproduce.

Thus, we can conclude that the correct option is (b).

They are separate species because they cannot successfully reproduce.

which means they have different adaptation methods.

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ANSWER AND I’LL GIVE BRAINLIEST

Which of the following statements can you infer would happen If one organ system stopped working?
a. The other organ systems would have to work harder to make up for the broken system
b. The other organ systems would stop working too.
c. The other organ systems would still work on their own but might have to work harder to complete their function correctly.

Answers

Answer:

b

Explanation:

After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die. 3. All systems would be working together but the main ones would be muscular, nervous, and skeletal.

how many hearts does the octopus have ?​

Answers

Answer:

3

Explanation:

Answer:

Three hearts

Explanation:

One heart pumps blood throughout the body, while the other two pumps oxygen-rich blood through the gills.

OAmalOHopeO

In paragraph form (automatic 1-pt deduction if not), explain the evolutionary benefits of sexual reproduction as a means of increasing variation. Be sure to include (a) at least two ways in which sexual reproduction impacts genotype (i.e. genetic effects), and (b) two ways in which sexual reproduction may affect phenotype (i.e. trait effects).

Answers

Answer:

See explanation

Explanation:

According to the theory of evolution,species which are better adapted to their environment tend to survive and reproduce in a population passing on these favourable characteristics to their offsprings.

During sexual reproduction, genes can be arranged in new ways from chromosomal crossing over and recombination. This introduces new gene combinations(genotype) and ultimately variation in the population.

This variation may also lead to the observation of new phenotypes in the population.

Why do frogs have triangular heads?
Plz help me with this question!!​

Answers

Answer:

Aquatic frogs tend to have long, flat skulls, while digging species often have short skulls with pointed snouts, a shape that also enables them to use their mouths like chopsticks to catch small, scurrying prey such as ants and termites.

Explanation:

Which of the following is NOT of the major biogeochemical cycles?

A.Life cycle
B.Water cycle
C.Carbon cycle
D.Phosphorus cycle

Answers

water cycle............

The following is NOT of the major biogeochemical cycles D.Phosphorus cycle is D.Phosphorus cycle.

What is the difference between Carbon cycle and Phosphorus cycle?

The major distinction among carbon and phosphorus cycle is that carbon cycle interacts with the environment while phosphorus cycle does now no longer engage with the environment. Therefore, the carbon cycle is a sort of gaseous biking while the phosphorus biking is a sort of sedimentary rocks.

As in comparison to nitrates & different macro elements, decomposers take longer time to decompose any lifeless biota into phosphates. Decomposers are organisms mainly a soil bacterium, fungus, or invertebrate, that decompose natural material. These are the motives for phosphorus cycle being the slowest biogeochemical cycle.

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briefly describe what the outer layer of bone tissue is like

Answers

Answer:

dinkachika

jingalalalalallalal

Answer:

Plz refer image for your answer

Explanation:

Hope it helps.. if yes plz mark me as brainliest

Many animals have a mutually-beneficial, symbiotic relationship with bacteria that reside in their guts. To study the effects of these relationships in more detail, research organisms such as fish and mice have been raised under germ-free conditions. What important process do you predict is compromised in germ-free mice

Answers

Answer:

Explanation:

Quá trình tiêu hoá và hấp thụ chất dinh dưỡng

When organisms die, how does carbon re-enter the environment?
I. Carbon dioxide released during decay
II. Carbon monoxide when the dead material reacts with oxygen
III. Forms sedimentary rocks
IV. Forms fossil fuels
A. II, III, IV
B. I, II, III, IV
C. I and III
D. I, III, IV

Answers

Answer:

Forms sedimentary rocks

When any organism die, it releases carbon dioxide during decay, forms sedimentary rocks as well as fossil fuels. The correct option is D.

What is carbon cycle?

The carbon cycle is nature's way of recycling carbon, which travel from the atmosphere into lifeforms on Earth and then back into the atmosphere.

During decay, formation of sedimentary rocks, and formation of fossil fuels, carbon re-enter the environment after an organism die.

The carbon cycle exemplifies how carbon moves among various reservoirs on Earth. This cycle is crucial for keeping Earth's breathable atmosphere and carbon balance.

Without carbon, there wouldn't be any life on Earth. This is largely attributable, in part, to carbon's ability to readily form bonds with other atoms, which allows for greater flexibility in the form and function of biomolecules such as DNA and RNA.

Thus, the correct option is D.

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Besides plants, what other factor distinguishes one biome from another biome?
(A) the number of plant species in the biome
(B) the variety of animal species
(C) average temperatures and precipitation
(D) geographic location

Answers

C) Average temperatures and precipitation

How many different genotypes are possible from a cross between the parents RRYy and rrYY?

Answers

Answer:

1 genotype is possible

RrYy

RrYy or RrYY
it will always be Rr when crossing RR and rr but crossing Yy and YY can give YY or Yy
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