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alexgriva [62]
4 years ago
7

Which of the following statements best explains the mechanism for DNA

Biology
1 answer:
serg [7]4 years ago
7 0
DNA replication is semi-conservative

Explanation: Each DNA molecule resulting from replication has one original strand and one new strand, so we call this semi-conservative.
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What part of the bacterium allows it to recognize different substances in the outside environment?
Zielflug [23.3K]
It is the cell membrane
7 0
4 years ago
Qué tipo de anomalía cromosómica es el síndrome de down y Cómo se manifiesta? ¿Qué tipo de anomalía cromosómica es el síndrome d
sashaice [31]

Answer:

El síndrome de Down es el resultado de un niño nacido con un cromosoma adicional agregado al número esperado de cromosomas (generalmente destinado a ser 46).

El síndrome de Angelman se produce cuando un niño nace con una mutación en el 15º cromosoma heredado de los padres.

Explanation:

En el síndrome de Down, se agrega un cromosoma adicional al complemento de cromosomas que un niño debe heredar de sus padres. Se supone que un niño tiene un complemento de 46 cromosomas (23 cada uno) de ambos padres. Una vez que hay un aumento en este número, se establece el síndrome de down. Es una condición cromosómica común. Puede manifestarse como una trisomía, causada por la no disyunción durante la división celular, lo que resulta en 3 copias del cromosoma 21 en lugar de 2 copias, mosaicismo, donde una mezcla de células se clasifican en 2 grupos que contienen un complemento completo de 46 cromosomas y el otro un el cromosoma adicional lo hace 47 y la translocación ocurre cuando un cromosoma 21 adicional o parte del 21 se une al cromosoma 14. Los niños generalmente tienen cabezas y orejas pequeñas, cuellos cortos, caras planas, etc.

En el síndrome de Angelman, el cerebro se ve afectado en gran medida, debido al efecto de la mutación en el sistema nervioso. La pérdida de la función en el 15º cromosoma es responsable del síndrome de Angelman, que resulta en la incapacidad del niño para hablar, mantener el equilibrio, moverse, un desarrollo deficiente tanto física como intelectualmente.

5 0
3 years ago
The major buffer in blood is composed of the weak acid carbonic acid (H2CO3) and its conjugate base, bicarbonate ion (HCO3 - ).
tatuchka [14]

Answer:

The increase in the amount of  carbon dioxide in in blood will lead to respiratory acidosis

Explanation:

Carbon dioxide in its normal level between  38 to 42 mm Hg plays vital roles in the human body like regulating the PH of the human blood, breathing regulation and other things. If the amount of carbon dioxide is high more than the range level, it will cause what is called respiratory acidosis.

Respiratory acidosis is a situation in cause by decrease in ventilation i.e Oxygen level leading to increase in carbon dioxide and drop in PH level of the blood.

6 0
3 years ago
Dolphins hear with:
enot [183]

Answer:

A.

Explanation:

hope this helped

stay safe

brainliest is appreciated only 1more to level up please help :)))

6 0
3 years ago
Read 2 more answers
Someone help me? look at the image look at the image look at the image look at the image
grin007 [14]
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Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells also remove carbon dioxide from your body, transporting it to the lungs for you to exhale. Red blood cells are made inside your bones, in the bone marrow. They typically live for about 120 days, and then they die.

White blood cell. ... White blood cells(also called leukocytes or leucocytes and abbreviated as WBCs) are thecells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals that arepicked up by platelets. The plateletsthen rush to the site of damage and form a plug, or clot, to repair the damage.
5 0
3 years ago
Read 2 more answers
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