What season is it in the Southern Hemisphere in January

A scientist studies the DNA in corresponding genes of a platypus, a

kipiarov [429]

Answer:

platypus and a duck has similar DNA.

Explanation:

There are certain similarities which are present between duck and platypus such as structure of beak or mouth, webbed feet and laying eggs in order to continue its generation. These three characteristic make the platypus and duck similar to each other. There is also one major difference is present which is that the platypus is the only mammal which lay eggs and feed baby with their own milk. Its tail structure is also different from duck.

7 0

3 years ago

Differenciate between intracellular enzymes and extracellular enzymes.

Digiron [165]

<span>Intracellular digestion takes place in animals without a digestive tract, in which food items are brought into the cell for digestion. Extracellular digestion is a process in which animals feed by secreting enzymes through the cell membrane onto the food.</span><span>
</span>

4 0

3 years ago

12.36Un balón lleno contiene 12 kg de oxígeno, O2, bajo una presión ma-nométrica de 40 atm. Determine la masa de oxígeno que se

const2013 [10]

Answer:

Quedan 7.317 kilogramos de oxígeno en el balón y se extraen 4.683 kilogramos de oxígeno en el proceso.

Explanation:

Asúmase que el balón es rígido. Supongamos que el oxígeno se comporta como un gas ideal, entonces la ecuación de estado es la siguiente:

$P\cdot V = \frac{m\cdot R_{u}\cdot T}{M}$ (1)

Donde:

$P$ - Presión, medida en atmósferas.

$V$ - Volumen, medido en litros.

$m$ - Masa, medida en kilogramos.

$M$ - Masa molar, medida en kilogramos por kilomol.

$T$ - Temperatura, medida en Kelvin.

$R_{u}$ - Constante de los gases ideales, medida en atmósfera-litros por kilomol-Kelvin.

El aire experimenta un proceso isocórico e isotérmico, entonces obtenemos la siguiente relación:

$\frac{P_{1}}{m_{1}} = \frac{P_{2}}{m_{2}}$ (2)

Nótese que los subíndices 1 y 2 representan los estados inicial y final de proceso.

Si sabemos que $P_{1} = 41\,atm$ , $m_{1} = 12\,kg$ y $P_{2} = 25\,atm$ , entonces la masa final del aire es:

$m_{2} = \frac{P_{2}}{P_{1}} \cdot m_{1}$

$m_{2} = \left(\frac{25\,atm}{41\,atm}\right)\cdot (12\,kg)$

$m_{2} = 7.317\,kg$

La masa que se ha extraído del balón es:

$\Delta m = m_{1}-m_{2}$

$\Delta m = 12\,kg-7.317\,kg$

$\Delta m = 4.683\,kg$

Quedan 7.317 kilogramos de oxígeno en el balón y se extraen 4.683 kilogramos de oxígeno en el proceso.

8 0

3 years ago

Factors that affect the diffusion

Keith_Richards [23]

Answer:

Temperature is one factor that can affect the rate of diffusion. Diffusion occurs faster in warmer temperatures, and occurs slowly in cooler temperatures.

7 0

3 years ago

What Are the major group of photosynthetic bacteria

neonofarm [45]

The bacteria are :

Blue green algae

Rizobium

Rhizopus

7 0

3 years ago