Answer:
HeLa cells contain rare traits that make them invaluable to scientific research. Research into the Lacks family may provide insight into this mutation and cell proliferation.
Explanation:
HeLa cells have a controversial origin, rooted in ethical breaches. They were derived from a non-consenting, female African-American donor patient, Henrietta Lacks who was terminally ill with a form of cervical cancer. These particular cells have a remarkably short period of proliferation, due to their active telomerase.
During cell division, these telomoerases were found to make repeat copies of the cell's telomere, and the cells can divide an unlimited number of times in lab cell cultures- a very rare occurrence. They were later commercialized- HeLa cells are durable, robust and commonly used in cancer cell research.
(A) the active site is the part of the enzyme into which the substrate fits.So Active Site is the answer to your question.
B. is correct. Let's look at the others...
A-- we know salt deposits are not alive.
C-- True, salt deposits are not alive, but they do not respond to stimuli... this is a characteristic of living things.
D-- Salt deposits are not alive and do not maintain homeostasis.
The correct answer is:
bacillus
Explanation:
Bacillus is a diversity of gram-positive, rod-shaped bacteria and a member of the phylum Firmicutes. Bacillus species can be obligate aerobes or facultative anaerobes. Many species of Bacillus can generate extensive quantities of enzymes which are applied in various industries.
