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Aleksandr [31]
2 years ago
7

A Biologia Celular, também chamada de Citologia, é a parte da Biologia relacionada com o estudo das células, as estruturas funda

mentais dos seres vivos. Ao analisar uma célula de qualquer ser vivo, é possível perceber três partes básicas. Quais são elas? *
a) Membrana plasmática, citoplasma e material genético
b) Membrana plasmática, citoplasma e núcleo com carioteca
c) Membrana plasmática, organelas e núcleo
d) Membrana plasmática, citoplasma e organelas
Biology
1 answer:
strojnjashka [21]2 years ago
3 0

Answer:B

Explanation:

TENHA UM DIA ABENÇOADO

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An endangered species of fish has a population that is decreasing exponentially:A=A0 e^kt The population 10 years ago was 1700.
bija089 [108]

Answer:

The correct answer is E. none of the above.  The population will drops below 100 when t ≥ 38.

Explanation:

Given A= A0 e^kt. The population 10 years ago is A0, the population today is A(10), and we have to find the value of "k" and then the time when population drops below 100.

So, A(t) = 1700 e^kt ⇒ A(10) = 1700 e^k(10) ⇒ 800 = 1700 e^k(10) ⇒

800/1700 = e^k(10) ⇒ln (800/1700) = k(10) ln e ⇒ -0.754/10 = k ⇒

k = -0.0754.

Now you have all the parameters, so you can find the time at which the population drops below 100.

A(t) = 1700 e^kt ⇒ 100 = 1700 e^(-0.0754)t ⇒100/1700 = e^(-0.0754)t ⇒

ln(100/1700) = (-0.0754)t ln e ⇒ [ln(100/1700)]/(-0.0754) = t ⇒

t = 38.

So, the population will drops below 100 when t ≥ 38.

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3 years ago
Si una persona sana que no tiene mutaciones en el cromosoma 4 decide tener hijos con una persona heterocigota (A/a) que padece d
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Answer and Explanation:

<u>Cruza</u>: persona sana sin mutaciones con persona portadora

El parental sano aporta alelos normales del gen a la descendencia

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Parental)    AA   x   Aa

Gametas) A    A    A   a

Cuadro de Punnet)   A       A

                           A   AA    AA

                           a    Aa    Aa

F1) 2/4 = 1/2 = 50% de la progenie seran individuos sanos AA

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Como uno de los progenitores es portador, cada individuo tiene un 50% de posibilidades heredar el gen alterado.

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