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kolbaska11 [484]
3 years ago
13

Identify the following strand fragments of nucleic acids as RNA or DNA.

Biology
2 answers:
azamat3 years ago
6 0

Answer:

the answer to your problem is A

gulaghasi [49]3 years ago
3 0

Answer:

The correct answer is "A. DNA". Nucleotides are the parts or links that constitute nucleic acids and DNA is a nucleic acid that stands for Deoxyribonucleic Acid. It does not matter if the sample studied is from a silk moth or other species; the DNA strand can only be represented by the letters A, C, G, and T. In this case, the DNA sequence is represented by CAGACT.

Explanation:

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LO NECESITO URGENTEMENTE, PORFAVOR AYUDENME INSTRUCCIONES: lee el siguiente texto y completa las ideas con las siguientes palabr
Andre45 [30]

Answer:

La reproducción sexual consisten en la unión de dos gametos uno femenino y otro masculino, para formar un nuevo individuo con características provenientes de ambos progenitores. Los gametos son células especializadas que se forman por un proceso meiótico y tienen en su núcleo la mitad de la información genética de un organismo, por lo que reciben el nombre de células haploides de manera que cuando se une sus cromosomas se forman células diploides característico de la especie. La característica más importante de este tipo de reproducción es la variación genética que implica que los descendientes tengan características de sus dos progenitores, por lo que son diferentes a ellos. El proceso en el que se une las células sexuales se le conoce como fecundación. En los animales esta pude ser interna o externa.

Explanation:

Los gametos (óvulos y espermatozoides) son células germinales especializadas que se desarrollan a partir de un proceso llamado gametogénesis (espermatogénesis en machos y ovogénesis en hembras). El proceso de gametogénesis implica un tipo de división celular llamado 'meiosis' donde la cantidad de cromosomas se reduce a la mitad. En humanos, el número cromosómico diploide (2n) de 46 cromosomas se reduce a un número haploide (n) de 23 cromosomas. La fecundación es el proceso por el cual los gametos se fusionan durante la reproducción sexual para producir un cigoto diploide. En la reproducción sexual, el aumento de la variación genética en la progenie es un resultado de tres procesos diferentes: la unión aleatoria entre gametos durante la fecundación, la distribución independiente de los cromosomas durante la gametogénesis y el entrecruzamiento (recombinación o crossing over) entre cromátidas de cromosomas homólogos durante la meiosis. Finalmente, en animales, la fecundación puede ser interna, la cual se produce mediante la unión de los gametos dentro del cuerpo de la hembra (por ejemplo, gallina, leona, cebra, etc.), o fecundación externa, donde la fusión de gametos se produce en el ambiente externo (por ejemplo en peces, sapos, ranas, etc.).

6 0
3 years ago
How are living things organized from atoms to molecules
zhannawk [14.2K]

Answer:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Explanation:

4 0
3 years ago
The three major clades of bilaterian animals are the __________.
Vaselesa [24]
The three major clades of bilaterian animals are the <span>ecdysozoa, lophotrochozoa, and deiterstomia. 
Ecdysozoa are organisms that include insects, crustaceans, chelicerata, and myriapods. Lophoytochozoa include fossil organisms. Deiterstomia include chordata, echinodermata, and hemichordata.
Bilaterian animals have bilateral symmetry, meaning that they have a head, and a tail, as well as back and belly. 
</span>
8 0
3 years ago
Why have only a few people ever seen a total solar eclipse?
Hunter-Best [27]

As the experts says, solar eclipse do not happen always like lunar eclipses do that is visible for a long periods of time and are observable. Unlike solar eclipse, it happens hundreds and thousands of years to see it. Few people can only see solar eclipse, and those only those people who are in the small region where the Moon's umbra strike's Earth can witness one.

7 0
3 years ago
If the efficiency of a gasoline engine is 25%, what happens to the missing 75% of the energy in the fuel?
hram777 [196]

The 75% energy which does not do any useful work gets dissipated as thermal energy in gasoline engines.

Explanation:

The efficiency of any engine like gasoline engine is the ratio of work done in contrast to heat or energy provided.

Gasoline engines are internal combustion engine. The thermal efficiency is calculated of these engines.

work done or efficiency= \frac{work done}{heat absorbed}

         or heat absorbed is divided by heat used in doing work

the friction and in other forms heat gets lost.

In gasoline engine about 65 to 75 % heat gets emitted without any useful work done. The heat gets lost in friction, air turbulence, noise and work input to turn on the engine. After the dissipation of heat in it only 25% is used up by vehicle having gasoline engines.

5 0
3 years ago
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