Question 1 How do HeLa cells keep dividing while other cells...

Question 1 How do HeLa cells keep dividing while other cells die off? HeLa ignore signals to stop dividing All of these answers are correct HeLa ignore mutations that accumulate over generations HeLa avoids apoptosis Question 2 Research with HeLa cells lead to a vaccine for ____, which likely caused Henrietta's cancer.

Transcript

0:00 Hello students.

00:01 Now in this question they're asking how do hella cells keep dividing while other cells die off.

00:08 Now what are these hela cells? heila cells are basically the cells which have been extracted from the cervical tumor.

00:17 Where has it been extracted from? it has been extracted from cervical tumor and this is a artificial cell that you will observe which is used for the scientific research purposes.

00:29 So, so the basic functioning of heal cells is done because to check for the cancer research, right? so here you will observe that heela cells are keep on dividing.

00:43 Why do they keep on dividing? because there is over expression, we can say, of the telomerase enzyme.

00:51 What do we observe? we observe that there are something known as the telomerases.

00:55 What are the telomerases? we will observe that there are something overactive telomerases.

01:03 What is this telomerase going to do? this telomerase is basically an enzyme.

01:10 So this enzyme, if you observe the dna, there is the end sequence, right? this end sequence is known as what? it is known as the telomere, right? so as in when the cell division keeps on occurring, you will observe, that this region that you see will shorten over the period of time.

01:33 And when it is so short, that is when the cell arrest will happen or the cell death will occur.

01:39 But in case of heela cells, if there is overactive telomerease enzyme, what basically happens is that this telomere that is present, it will be the same even in the second case...

Question

Please give Ace some feedback