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irinina [24]
3 years ago
5

Suggest why it is a vital function of pedicellariae to clean the surface of a starfish.

Biology
1 answer:
Alenkasestr [34]3 years ago
6 0
So that the starfishes surface doesn't get covered in encrusting organisms such as planktons or parasites.
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An antibody attaches to an antigen for what reason?
r-ruslan [8.4K]

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provide protection against pathogens

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3 years ago
Since ethnicity is not biologically fixed, self-identification with a particular ethnic group can change through what process?
Anuta_ua [19.1K]

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Situational Negotiation of Identity

Explanation:

when our claimed or perceived identity varies depending on the context. One among severally culturally distinct groups in a society or region; members share beliefs, values, habits, customs, and norms. You can be one thing or another depending on your setting Minority groups: subordinate groups in society.

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3 years ago
Si una población crece mucho otra vez después de un cuello de botella con el paso del tiempo aumentará diversidad genética ¿por
sammy [17]

Answer:

los mecanismos capaces de generar diversidad actúan para incrementar la variabilidad genética en la población que sufrió el cuello de botella

Explanation:

Un cuello de botella se refiere a una reducción drástica en el tamaño de una población (por ejemplo, debido a una catástrofe natural). Un cuello de botella es un fenómeno que está asociado a la ​reducción en la variación genética y fijación de ciertos alelos en la población resultante, lo cual es causado por la deriva genética, es decir, debido al muestreo al azar de los individuos que formarán la población en la siguiente generación. Paulatinamente, los mecanismos capaces de generar variabilidad genética aumentarán nuevamente la diversidad de la población que sufrió el cuello de botella. En una población de reproducción sexual, la variación genética se genera mediante cuatro procesos diferentes: 1-mutación (es decir, la aparición de nuevos alelos debido a alteraciones en la secuencia de ADN); 2-recombinación (es decir, el intercambio de información genética entre cromátidas no hermanas durante la meiosis); 3-segregación independiente de cromosomas durante la meiosis (capaz de producir nuevas combinaciones de alelos) y 4-fertilización al azar (lo cual también incrementa el número de combinaciones entre gametos que darán lugar a un nuevo individuo).

4 0
3 years ago
The term secretion refers to Group of answer choices A.the process by which a cell releases a substance into the extracellular s
emmasim [6.3K]

Answer:

The term secretion refers to the cell that releases a substance into the extracellular space.

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When a cell or organ or gland produce and secretes substance in to extracellular space,this biochemical process is called as secretion.

The secretory products may be hormone, enzymes etc.

This process facilitates the movement of material from one place to another place.

For example, Pituitary gland produce and release prolactin hormone that induces breast cells to produce lactation during sucking process done by baby.

Pituitary gland also secrete different hormones that acts on different glands like adrenal, testes, ovary, thyroid gland etc that in turn produce different hormones like adrenaline,testosterone,estrogen,progesterone, TSH,T3, hormone etc.

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3 years ago
In the protein synthesis STEM case, which of the following mutations/errors created a nonfunctional ADA enzyme (protein) which i
Lelu [443]

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i dont know how to explain but i think its question 3 i might be wrong

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