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Lostsunrise [7]
2 years ago
11

Permitting the passage of nutrients and gases between the blood and tissue cells is the primary function of ________.

Biology
1 answer:
VladimirAG [237]2 years ago
3 0

Permitting the passage of nutrients and gases between the blood and tissue cells is the primary function of capillaries. They are tiny blood vessels.

<h3>What are capillaries?</h3>

Capillaries are tiny blood vessels of the circulatory system, which is one of the major organ systems.

The primary function of capillaries is to transport nutrients and oxygen (red blood cells) to all cells of the body.

Capillaries represent the smallest vessels found in the circulatory system (they have 5 to 10 μm in diameter).

Learn more about capillaries here:

brainly.com/question/64497

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What facts other than incorrect base pairing can alter DNA?
viva [34]
Mutation can cause DNA to change
4 0
4 years ago
4. Why are rattlesnakes necessary to the balance of life in a forest?
tekilochka [14]
They eat rodents and are eaten by owls and hawks

They are important because without them, the rodent population could become too numerous. Rodents like to chew on tree roots and other plants for nutrients, but this kills the plant. Too many rodents can cause a mass imbalance leading to the death of hundreds of other animals
5 0
3 years ago
Epigenetics may be defined as changes in the expression of a gene or set of genes by _______ and _______.
nataly862011 [7]

Epigenetics is the study of how DNA methylation and alterations to chromosomal proteins affect a gene or group of genes express themselves. For changes in a gene's expression, both of these are need.

In a biological process called DNA methylation, methyl groups are added to the DNA molecule. A DNA segment's activity can be altered by methylation without the sequence changing. DNA methylation usually inhibits transcription of genes when it occurs in a gene promoter.

Epigenetics literally translates to "along with changes in genetic sequence." Any procedure that modifies gene activity without altering DNA sequence and results in modifications that can be passed on to daughter cells is now included in the term. Is called Epigenetics.

Learn more about Epigenetics here

brainly.com/question/2670031

#SPJ4

5 0
1 year ago
1. Which of these describes the role of DNA in a cell? *
kondaur [170]

Answer:

c. DNA provides the information to make proteins for the cell.

3 0
3 years ago
Verdadero o falso mediante el genotipo podemos determinar si existen dominancia en una característica
Murljashka [212]

Answer:

Verdadero

Explanation:

Sabemos que los caracteres dependen de los genes. Y los genes pueden presentarse en forma de alelos dominantes, o alelos recesivos. La expresión de los alelos recesivos son enmascarados o escondidos por el alelo dominante. Es decir, que si ambos alelos se encuentran juntos en un heterocigota, solo el alelo dominante se expresará.

Entonces el alelo dominante expresa la característica que resulta dominante, mientras que el alelo recesivo expresa la característica recesiva.

Genotipo:

  • Homocigota dominante ----> Expresa caracter dominante (Solo el alelo dominante esta presente)
  • Heterocigota -------------------> Expresa el caracter dominante (Ambos alelos estan presentes, pero el dominante es quien se expresa)
  • Homocigota recesivo --------> Expresa el caracter recesivo (solo alelos recesivos estan presentes)

Por ejemplo, si tenemos dos fenotipos rojo y amarillo, y sabemos que el color esta codificado por un gen dialelico llamado M. También supongamos que no sabemos qué alelo expresa qué color. Teniendo solo estos datos, no podemos decir si el rojo es el color dominante o si el amarillo lo es.

Sin embargo, si tenemos los siguientes genotipos acompañando esta información:

  • MM--> Amarillo
  • Mm--> Amarillo
  • mm --> Rojo

Recién ahora podemos deducir que el caracter dominante es el amarillo.

8 0
3 years ago
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