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3 years ago

Sodium-potassium pumps are examples of what type of cellular transport?

Chemistry

1 answer:

Dmitrij [34]3 years ago

5 0

Answer:

Active transport

Explanation:

Sodium-potassium pumps are examples of Active type of cellular transport. Sodium potassium pump exchanges sodium ions from potassium ions through the plasma membrane of animal cells.

Whereas Active transport can be defined as movement of ions and molecules across a cell membrane to the region of higher concentration with the help of enzymes and energy.

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What shape and bond angles would this molecule have in three dimensions?

Darya [45]

Answer : The shape and bond angle of the given molecule is, bent and $120^o$ respectively.

Explanation :

In the given molecule, 'Y' is the central atom and 'X' is the neighboring atom. In the given molecule, there are 4 electron pairs that means the hybridization will be $sp^3$ and the electronic geometry of the molecule will be tetrahedral.

But as there are two atoms around the central atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular and the bond angle will be, $120^o$ .

Hence, the shape and bond angle of the given molecule is, bent and $120^o$ respectively.

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3 years ago

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What is the wavelength, in nm, of radiation which has an energy if 3.371 x 10^-19 joules per photon?

mr_godi [17]

Answer:

The correct option is:

D) 589.3 nm

Explanation:

Energy of one photon = $3.371\times10^{-19}J$

$Energy=\frac{hc}{\lambda}\\\\h=Planck's\:constant=6.626\times10^{-34}J/s\\c=speed\:of\:light=3\times10^{8}m/s\\\lambda=wavelength\:of\:radiation\\\\\lambda=\frac{hc}{Energy}=\frac{6.626\times10^{-34}\times3\times10^{8}}{3.371\times10^{-19}}=5.897\times10^{-7}m=589.7nm\\$

Hence, the wavelength (in nm) of radiation is 589.7nm (approximately equal to 589.3nm)

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3 years ago

How would an apple, potato, and onion all taste the same?

Firlakuza [10]

Answer:

If you were to plug your nose, it would block out more than 80% of taste, causing all three items to have no taste- therefore making them taste the same.

Explanation:

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2 years ago

Why do ionic compounds conduct when dissolved and covalent compounds do not?

Wewaii [24]

Lo siento ... necesito puntos!......

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3 years ago

A teacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and pH in

VMariaS [17]

Answer:

1. Comparative

2. Independent variable

3. The pH is the Dependent variable

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3 years ago

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