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3 years ago

Explain Hayflick limit and why are HeLa cells able to live beyond the Hayflick limit?

Computers and Technology

1 answer:

Crank3 years ago

3 0

Answer:

The Hela cells live beyond the Hayflick limit due to the secretion of telomerase in the Hela cells.

Explanation:

Hayflick limit is the number of times a cell divides by mitosis, due to the continuous shortening of the telomeres at the end of the chromosomes. It only apply to normal living cells.

Hela cells are human cancerous cells found in the cervix or the entrance of the uterus. They cause cervical cancer as they grow uncontrollably, affecting other cells around it.

The Hela cell survive the hayflick limit because it produces a hormone called telomerase, that continuously elongates the telomeres of the chromosomes, for continuous cell division.

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Doug grew up on a large farm in southwest Wisconsin. As a college graduation gift, Doug’s father gave him several hundred acres

IrinaVladis [17]

Answer: Sole Proprietorship.

Explanation:

This question wants to know what type of business is described in the scenario.

In a Sole Proprietorship, the owner of the business is essentially the business itself. They control all aspects of the business from the operating activities to the financial activities of the firm. This is usually the first stage business type in an entrepreneurship.

The definition of a sole proprietorship above fits with what Doug does. Doug is the owner of the farming business and seems to be handling all aspects of it by himself. This would therefore make it a sole proprietorship.

5 0

3 years ago

Create a script to input 2 numbers from the user. The script will then ask the user to perform a numerical calculation of additi

ohaa [14]

Answer:

The code given is written in C++

First we declare the variables to be used during the execution. The names given are self-explanatory.

Then the program outputs a request on the screen and waits for user input, for both numbers and one more time for the math operation wanted, selected with numbers 1 to 4.

Finally, the program executes the operation selected and outputs the result on screen.

Code:

#include <iostream>

int main()

{

// variable declaration

float numberA;

float numberB;

int operation;

float result=0;

//number request

std::cout<<"Type first number:\n"; std::cin>>numberA;

std::cout<<"Type second number:\n"; std::cin>>numberB;

//Operation selection

cout << "Select an operation\n";

cout << "(1) Addition\n";

cout << "(2) Subtraction\n";

cout << "(3) Multiplication\n";

cout << "(4) Division\n";

std::cout<<"Operation:\n"; std::cin>>operation;

switch(operation){

case 1:

result = numberA+numberB;

break;

case 2:

result = numberA-numberB;

break;

case 3:

result = numberA*numberB;

break;

case 4:

result = numberA/numberB;

break;

default:

std::cout<<"Incorrect option\n";

}

//Show result

std::cout<<"Result is:"<<result<<::std::endl;

return 0;

}

5 0

3 years ago

Although “dog.jpg” and “dog.JPG” and “Dog.jpg” and “DOG.JPG” all appear to be the same file, they are not considered the same wh

bonufazy [111]

They are not considered the same when programming web pages on the Internet, because it depends on what opereting system you're using to create web-site. Every OS use different character encoding capable. You can avoid that by entering utf-8 (or smth like that) in your html file.

4 0

4 years ago

How to jailbreak ios 9.2 ? Is there anyway???!!!!

Leviafan [203]

Use Pangu 9.2 iOS jailbreak installer.
1. get the Pagnu 9.2 installer
2. connect your iOS 9.2 device to your Windows/OS X machine via universal serial bus cord
3. go through with the setup wizard

6 0

3 years ago

If an ips identifies an attack, it can ________.

Gennadij [26K]

Answer:

a. drop the attack packet(s)

Explanation:

An IPS not only detects and alerts system administrators but it also stops attacks. It is built to consistently monitor a network, report malicious incidents and take preventative actions. So, how does an IPS work exactly? An IPS does a deep packet inspection and either blocks the IP of whoever sent the malicious packet or removes the malicious packet's content and repackages its payloads. Thus, this means that the malicious packet is completely dropped by stripping off of its header information and any infected items in the packet.

5 0

3 years ago