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Pani-rosa [81]
3 years ago
10

How is energy expended in active transport​

Computers and Technology
1 answer:
professor190 [17]3 years ago
7 0

Here's the biology explanation:

Most of the energy expended by a cell in active transport is used to pump ions out of the cell across the plasma membrane.

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A hub transmits all incoming messages to all of its ports except the port where the messages came in. A switch usually sends mes
leonid [27]

Answer:

MAC Addresses (Destination and Source MAC address)

Explanation:

A switch has 3 primary functions:

  • Forward frames
  • Learn addresses
  • Avoid loops

An Ethernet frame has the header, data and trailer and there are two specific fields in the header that helps the switch to know where to send data in future transmissions.

  • destination MAC address
  • source MAC address

every Ethernet frame has this and when the frame hits a switch or any device, any device can look at it ( an Ethernet frame ) and know where it is suppose to go and where it came from.

Every switch has a MAC address table where it stores MAC addresses of different computers on the network.

Example:

When a PC1 sends a frame to PC2 through a switch, the switch looks at the header of the Ethernet frame for the source mac address and adds the source MAC address to its MAC address table and also the port that it came through.

simply put:

A switch looks at the source MAC address to see if it knows it already, if it does. Great! no need to add it again to it's address table.

If it doesn't, it adds it's source address and the port that the frame came from.

This basically how the switch populates its MAC address table.

3 0
3 years ago
Read 2 more answers
In what year was the first permanent photographic image created?
kvv77 [185]

Answer:

1826

Explanation:

it was in 1826 when the first permanent photographic image was created.

5 0
2 years ago
You are the CEO of a large tech company and have just received an angry email that looks like it came from one of your biggest c
sergejj [24]

Answer: as a whale attack

Explanation:

A whale attack is simply refered to as an attack that is utilized by cybercriminals and in this case, a senior player such as the CEO is targeted in the company and the aim is to steal sensitive information from them or steal money or gain access to their computer for fraudulent purposes.

Based on the explanation above, the attack called into is a whale attack.

4 0
3 years ago
Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
sdas [7]

Answer:

The modified program in Python is as follows:

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

wall_width = int(input('Enter wall width (feet):\n'))

area = wall_height*wall_width

print('Wall area:',area,'square feet')

paint_needed = area/350.0

print('Paint needed: {:.2f} gallons'.format(paint_needed))

print('Cans needed:',round(paint_needed),'can(s)')

color = input("Choose a color to paint the wall: ")

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Explanation:

The italicized are given from the question [unchanged]

<em>import math</em>

<em> paint_colors = {'red': 35,'blue': 25,'green': 23} </em>

<em>wall_height = int(input('Enter wall height (feet):\n')) </em>

This gets input for width

wall_width = int(input('Enter wall width (feet):\n'))

Calculate the wall area

area = wall_height*wall_width

Print the calculated wall area

print('Wall area:',area,'square feet')

Calculate the amount of paint needed

paint_needed = area/350.0

Print the amount of paint needed to 2 decimal places

print('Paint needed: {:.2f} gallons'.format(paint_needed))

Print the amount of can needed to nearest integer

print('Cans needed:',round(paint_needed),'can(s)')

Prompt user for color of paint [here, we assume the user input is correct]

color = input("Choose a color to paint the wall: ")

Prints the corresponding amount for the color

print("Cost of purchasing", color, "paint: $",paint_colors[color])

3 0
2 years ago
Which is a common problem caused by the widespread use of computers?
Andru [333]
Hacking would be a widespread problem.
8 0
3 years ago
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