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Novosadov [1.4K]
3 years ago
11

Como se forman las perlas

Biology
1 answer:
Kobotan [32]3 years ago
5 0
Hay tees métodos pot los cuales se forma las perlas: naturalmente, culturas, o imitación. En la naturaleza, in irritante como un pará o un grand de arena de abre paso entre el manto y la cáscara de in mejillón, una almeja o una ostra. Leugo, como mecanismo de defensa, la criatura marina comienza a secretar una mucosa com minerales conocidos como nácar, el mismo material del que están hechas las conchas. Con el tiempo, la capa de nácar de acumula y después de varios años, las perlas de agua salada tardan más en formarse, una perla está completamente formada. En el método de cultivo, un irritante se implanta quirúrgicamente en la criatura, esto se conoce como el núcleo, la semilla o “madre de perla”. A partir de ahí sufre el mismo proceso que en la naturaleza. No creo que estuvieras preguntando sobre el proceso para hacer perlas de imitación. No hablo Español, así que esto ha sido traducido por el traductor de google si ay algún problema de traducción. Espero que esto ayude.
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pentagon [3]

Answer:

Null hypothesis: male and female spiders organized in mating pairs don't differ significantly in respect to body length

Alternative hypothesis: male and female spiders organized in mating pairs exhibit significant differences in respect to body length

The application of one statistical test in order to obtain one p-value (probability value) may provide useful evidence to support the alternative hypothesis (or reject it).  

The inference procedure uses the information collected from the sample in order to obtain one conclusion.  Frequentism is a type of inference procedure that can be used to test a hypothetical test case, which is here represented by male and female spiders organized in mating pairs.

8 0
3 years ago
List out of the <br>ways through which we can minimise the option of plastic and deal with garbage​
Nataly_w [17]

Answer:

Multiple ways that we can minimise the option of plastic are by reusing different plastics, use compost bins, and use reusable grocery bags or reuse plastic bags when grocery shopping, buy secondhand items and donate used goods, and RECYCLE!!

I hope that this helped :)

8 0
3 years ago
Why can gel electrophoresis separate DNA fragments?
Ghella [55]

Answer:

<em>The correct option is B) DNA fragments are negatively charged.</em>

Explanation:

The backbone of the DNA is made up of sugar and phosphates. The phosphates present in the backbone of the DNA are the main reason for the DNA to be negatively charged. The negative charge of the DNA allows different DNA fragments to separate by gel electrophoresis depending on their charge/mass ratio. The smaller DNA fragments will move faster towards the positive end of the gel as compared to the larger fragments and hence they will separate.

7 0
4 years ago
Serological testing is based on the fact that: Select one:
mihalych1998 [28]

Answer:

B. Antibodies react specifically with an antigen.

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7 0
3 years ago
Assume in otters short hair (L) is dominant to long hair (l) and black hair (B) is dominant to brown (b). If you found a black s
Georgia [21]

Answer:

llbb

Explanation:

<em>The genotype of the black, short-haired otter could be determined by testing-crossing with a brown, long-haired otter whose genotype would be </em><em>llbb</em><em>.</em>

Analysis of the resulting zygote from the cross would give an indication of the genotype of the otter - whether it has two dominant alleles each for the black, short-hair traits or heterozygous.

<u>If the otter has two dominant alleles for the two traits, all the resulting zygote from the test-cross would have black, short-hair, but if it is heterozygous, a mixed phenotype set of zygote would be obtained.</u>

5 0
3 years ago
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