Telomeres

repetitive DNA at the end of a eukaryotic chromosome is a __________.

• bacteriophage
• DNA polymerase
• nitrogenous base
• telomere

Why do lobsters die (according to the video)?

• they die from genetic mutation

• they die of old age

• they die because their telomeres break down quickly

• they die from being eaten

What purpose do telomeres serve? (select all answers that apply)

• they protect the ends of chromosomes

• they hold chromosomes together

• they code for proteins

• they are chunks of useless DNA

Suppose someone has more telomerase activity than normal, what would this indicate about that person's cells? (select all answers that apply)

• they could be cancerous

• they may have long telomeres

• their cells could be immortal

• their cells would die quickly

Telomerase...

• is responsible for rebuilding telomeres

• is responsible for breaking down telomeres

• indicates that telomeres are absent from chromosomes

Cells with long telomeres on their chromosomes could be (select all that apply)

• cancerous

• have high telomerase activity

• young

• old

The scientist who said that cells lose DNA with each cell division and therefore will only divide a finite number of times is

• Hayflick

• Einstein

• Crick

• Watson

• Franklin