¿Qué tipo de célula apareció primero en la Tierra?:___, y se presentan en seres vivos como las:___ y se caracterizan porque:___. *

Answers

Answer 1

Answer:

Célula procariota y procariotas.

Explicación:

La célula procariota es un tipo de célula que apareció por primera vez en la Tierra hace unos mil millones de años. Estos tipos de células están presentes en los procariotas, lo que significa que estos organismos no tienen un núcleo verdadero o una membrana nuclear alrededor del núcleo y otros orgánulos de la célula. El ADN del organismo procariótico se encuentra en una parte central de la célula que se conoce como nucleoide. La pared celular de un procariota actúa como una capa adicional de protección, ayuda a mantener la forma y estructura celular y previene la deshidratación.


Related Questions

what is method of magnetic separation​

Answers

Explanation:

Magnetic separation is a method of waste management where magnets are used to separate metal from refuse. This is most common in single and mixed streams of recycling as the materials are collected together and separated before processing.

why do pollution levels increase when a ground inversion layer is present?

Answers

Answer:

These inversions occur when cold air gets trapped in the valley and a layer of warm air seals it from above. ... The stale air of an inversion allows for the buildup of pollutants created by vehicles, factories, fireplaces, and wildfires.

What are antibiotics and when can they not be used

Answers

Answer:

An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria. Antibiotics DO NOT work on viruses, such as those that cause: Colds and runny noses, even if the mucus is thick, yellow, or green. Most sore throats (except strep throat) Flu.

Answer:

Antibiotics are medicines that help stop infections caused by bacteria. They do this by killing the bacteria or by keeping them from copying themselves or reproducing. Antibiotics do not work on viruses, such as those that cause colds, flu, bronchitis, or runny noses, even if the mucus is thick, yellow, or green. Antibiotics are only needed for treating certain infections caused by bacteria, but even some bacterial infections get better without antibiotics.

Endangered peregrine falcons have been bred in captivity and released in area where they prey on pigeons and rodents. These activities are examples of
1
species preservation and biological control
2
overhunting and direct harvesting
3
recycling and technological development
4
conservation of resources and habitat destruction

Answers

I believe it would be 1. Species preservation and biological control.

Which process belongs to the region marked x ?

Answers

Answer:

Where's the diagram

Explanation:

????????

I think the answer is B

What type of graph is this?
What does “A” value, or constant,represent for this pattern?
How much ink was used by the ORANGE pen when a 3 m line was drawn?

Answers

Answer:

a is the value of kus omak

Explanation:

1. ---------------- is non- metal used in the vulcanisation of rubber. 2--------------- is used making fertilisers. 3. ----------------- is used in to matchstick heads. 4---------------- crystals are used for keeping time in watches . 5.---------------is a non-metal that has a high melting point. 6.------------ metal is found in a pure state in nature. 7.------------------ is the most. abundant metal on the earth. 8 . is a non-metal present in hair eggs and wool. 9. metal that is used to harden steel. 10 . metal is used to galvanise iron . plz help 5 minute.​

Answers

Answer:

1. sulfur

2. ammonium nitrate

3. potassium chlorate

4. quartz Crystal's

5. Diamond

6. aluminum

7. aluminum

8. keratin

9. chromium

10. zinc

Explanation:

1. SULFUR is non-metal used in the vulcanization of rubber.

2. AMMONIUM NITRATE is used to make fertilizers.

3. POTASSIUM CHLORATE is used to matchstick heads.

4. QUARTZ crystals are used for keeping time in watches.

5. DIAMOND is a non-metal that has a high melting point.

6. ALUMINUM metal is found in a pure state in nature.

7. ALUMINUM is the most abundant metal on the earth.

8. KERATIN a non-metal present in hair eggs and wool.

9. CHROMIUM metal that is used to harden steel.

10. ZINC metal is used to galvanize iron

what are the five layers of the atmosphere? Explain each layer.​

Answers

The atmosphere can be divided into layers based on its temperature, as shown in the figure below. These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere. A further region, beginning about 500 km above the Earth's surface, is called the exosphere.

Answer:

There is (from closest to the surface of the Earth) ...

Explanation:

Troposphere: the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

Stratosphere: the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere).

Mesosphere: the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.

Thermosphere: the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.

Exosphere: the outermost region of a planet's atmosphere.

Once bacteria have fixed nitrogen, it can be taken up by plants and animals, where it is used in the production of

Answers

energy and food.

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Once bacteria have fixed nitrogen, it can be taken up by plants and animals, where it is used in the production of chlorophyll, amino acids, nucleic acids, and ATP.

Nitrogen serves several important functions in plants:

It is an important element in the synthesis of chlorophyll in plants. The chlorophyll itself is important for trapping the energy from the sun during photosynthesis.Nitrogen is a major component of amino acids which themselves are the building blocks of proteins. Proteins are important functional and structural biomolecules in all living organisms.Nitrogen is an integral component of nucleic acids which are essential for the storage of information, protein synthesis, and overall function of plants and animals.The element is also an important component of ATP, the energy currency of living organisms.

Hence, once nitrogen is taken up by plants and animals, it is utilized in the biosynthesis of important structural and functional molecules such as ATP, chlorophyll, nucleic, and amino acids.

More on the functions of nitrogen in living organisms can be found here: https://brainly.com/question/10735733

PLEASE HELP ITS URGENT 15 POINTS !!!!

Answer 3. A-b

Answers

Answer:

a) I b)i) 2

Explanation:

a black monkey eating write one scientific question about the organism in the photo​

Answers

Answer:

Why is the monkey black?

Explanation:

DNA stands for...
O Diphosphate Adenine
O Dioxide nitrate of adenosine
O Dinitrato of adenosine
O Deoxyribonucleic acid

Answers

DNA stands for Deoxyribonucleic acid. Hope this helps!

How does an increase in human population and consumption of energy impact the Earth’s surface?

Answers

Answer:

Explanation:

Because as the human biodiversity increases, we USE resources such as energy causing pollution, climate change, and other wildlife impacts.

Which of the following statements is true?

a.Daughter cells formed from meiosis have twice as many chromosomes as the parent cell.

b.During fertilization, the
chromosomes from two gametes are combined.

c.During binary fission, a single parent cell divides into four genetically identical daughter cells.

d.Sexual reproduction increases the number of inherited mutations.

Answers

Answer:

answer is b during fertilization

Answer:

B.

Explanation:

that's the correct answer

Research since Mendel's time has established that the law of segregation of genes during gamete formation Research since Mendel's time has established that the law of segregation of genes during gamete formation applies to all sexually reproducing organisms. applies to all asexually reproducing organisms. applies to all forms of life.

Answers

Answer:

applies to all sexually reproducing organisms.

Explanation:

The law of segregation of genes applies to all sexually reproducing organisms because segregation occurs in the gametes. The Mendelian trait alleles may be dominant or recessive and they will passed down from parent to child. In plants, for example, the color trait of the flower will depend on the type of allele inherited by the offspring. Each parent plant transfers one of the alleles to their offspring and the dominant allele shows itself in the appearance.

Answer:

The correct answer is: applies to all sexually reproducing organisms.

Explanation:

Mendel's laws of segregation are a group of basic rules that explain how gene transmission (inheritance) occurs from parents to children in every species that reproduces sexually and constitute the foundation of Genetics.

Diploid species, such as rats or humans, for example, possess two sets of chromosomes, one that comes from our mother and one that comes from our father. To make the perpetuation of species possible, diploid individuals produce, through a process called Meiosis, sex cells called gametes - which contain only one set of chromosomes (each chromosome will have only one copy of each gene) that will add up to another set of chromosomes when they encounter another gamete from the opposite sex.

Each chromosome will have specific genes, and these genes can manifest in different variations that are called alleles. Depending on the alleles present in the chromosomes that we inherited from our mother and father, the gene will express itself in one way or another. This is thanks to the law of segregation that states that each gamete randomly receives one allele for each gene.

Individuals that reproduce asexually do not produce gametes; their progeny is identical to themselves, This is why Mendel's laws of segregation only apply to species that reproduce sexually and not all living organisms.

pleasehelp!! i have a bad grade in this class!! no links please

Answers

Answer:

The food web would be changed.

Explanation:

This is because YOu are introducing another species that will eat the beetle.

an ecologist named mark wants to control water pollution at a source that has biodegradable pollutants. which method should mark use?

a. biological action
b. carbon sequestration
c. incineration
d. conversation tillage

Answers

Answer:

The correct answer is - a. biological action.

Explanation:

Biological action depends on microbes such as bacteria, nematodes, or other small organisms to treat and break down organic or biodegradable pollutants or wastes through the water process.

Water bodies have various types of pollutants including biologically degradable garbage, wastes, and partially digested foods. In some of the lakes and ponds pathogenic organisms, heavy metals, and toxins also found that are treated by these microbes.

Question is in the screenshot

Answers

Answer:

secondary consumer

it consumes the primary consumer, wich in turn consumes the producer

is a collective human effort to comprehend, or better understand, the history of the natural world and how it works, through physical evidence collected via observations.

Answers

It’s 4nnnnnnnnnnjjjjj

Which of the following statements is true?

With an explanation For your answer.

A)

Since 1940, the production of electricity in the U.S. has not increased.


B)

Fossil fuels take millions of years to form.


C)

Most of the world's population lives in industrial areas.


D)

Hydroelectric power plants do not impact the environment.

Answers

B) Fossil fuels take millions of years to form

What type of process converts inorganic compounds or chemical energy into organic compounds WITHOUT needing light? A Chemosynthesis B Photosynthesis​

Answers

Answer:

Chemosynthesis is the conversion of inorganic carbon-containing compounds into organic matter such as sugars and amino acids. Chemosynthesis uses energy from inorganic chemicals to perform this task.

what represents the control group​

Answers

Answer:

which control group are you talking about?

Answer:

A control group shall be the subject group without treatment or standard treatment. The Control group shall be the subject group. Nothing would be compared to the treatment group without the control group. Where statistics refer to "X times higher" the difference in measures between the treatment group and the control group is referred to. A basic feature in the experiment is the control group.

Explanation:

Exactly the same conditions as therapy groups will apply to the control group. This makes it possible to measure only the effects produced by the variable. For example, in a plant study, each plant would ideally be in the same space, under the same conditions of light and air.

Control groups are also used when medicines are tested on humans. While control groups were only considered to be good science, drug trials found an interesting phenomenon. Control groups are frequently found in drug studies in people who have a disease or ailment but are not tested for the medicine.

A fake medicine is given to the control group, and patients begin to see findings. This is called placebo by scientists and is still mainly unexplained. Some scientists suggested that people improve simply because they thought they would get better, but this theory is not tested.

what is the approximate slope of the dashed line?

Answers

0.0067 im pretty sure is that

An independent variable is that which is:

A. Kept constant.
B. Observed to develop a hypothesis.
C. Changed by the scientist.
D. Measured by the scientist.

Answers

Answer:

C. Changeed by the scientist

Explanation:

An independent variable is also known as the test veriable. It is the one you change to get a different result is the dependent variable a.k.a the out come variable. Hope this helps!

Which of these could cause the amount of carbon dioxide in the atmosphere to decrease?

Answers

Answer:

An increase in the number of producers.

Explanation:

Producers/plants absorb carbon dioxide during photosynthesis and give off oxygen.Therefore to decrease the carbon dioxide in the air,we would have to plant more trees.

Have a nice day.

The percentage of carbon dioxide in the atmosphere should be 0.04% an increase in this amount can adversely affect the environment. Its amount can be decreased by increasing producers.

What is carbon cycle?

Carbon cycle is the process of circulating carbon atoms from atmosphere to Earth and then again to atmosphere.

Carbon dioxide is increased in atmosphere by increasing respiration, increasing amount of decomposers, use of fossil fuels.

The way to decrease the concentration of carbon dioxide in atmosphere is by increasing number of producers.

Producers makes their food by absorbing carbon dioxide and release oxygen as a byproduct, hence decreasing the concentration of carbon dioxide.

Thus, the correct answer is D.

For more details regarding carbon cycle, visit:

https://brainly.com/question/1627609

describe the difference between covalent and ionic bonds. give one example of each

Answers

Answer:

Actually, a covalent bond is formed between two non-metals. Electrons are shared between the two atoms in order for them to achieve a full outer shell. Covalent compounds do not conduct electricity.   An ionic bond is formed between a mental and a non-metal. Electrons are transferred from the metal atoms to the non-mental atoms to form ions. Ionic compounds conduct electricity when dissolved.

the more complex sugar disaccharides store more energy
Why do
than
monosaccharides?

Answers

Answer:

because disaccharides have more chemical bond

Explanation:

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#keep learning!!

Answer:

disaccharides have more chemical bond

Explanation:

Ape-x

An XX female will express a recessive sex-linked trait if she

options are in the screenshot and NOOO LINKSSS PLS

Answers

Answer:

what

Explanation:

Answer:

b

Explanation:

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What are the four nitrogen bases in DNA (check all that apply)?

thymine

guanine

adenine

uracil

cytosine

Answers

thymine

adenine

cytosine

guanine

Explanation:

uracil is not because uracil is only RNA.

Answer:

Thymine, guanine, adenine and cytosine.

Explanation:

Uracil is not one of the four nitrogen bases in DNA.

13. (02.05 LC)
What are the reactants for cellular respiration? (1 point)

Answers

Answer:

In cellular respiration oxygen and glucose are both reactants. Cellular respiration is mostly based on ATP; carbon dioxide and water from waste products.

Explanation:

Glucose and oxygen are reactive to ATP in cellular breathing. The by-products are water and carbon dioxide. Glycolysis (anaerobic process), a cancer cycle, and oxidative phosphorylation are three steps of aerobic cell breathing.

CO2 + Oxygen CO2 + H 2O C6H12O6 + 6O2 +Water Glucose (sugar), Sugar Cellular breathing, or aerobic breathing is a sequence of chemical processes which, in the presence of oxygen, start with sugar reactants and create carbon dioxide and water as waste products.

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