Question

Cultures produced from animal cells are obtained from ________.

A) Primary cultures, embryos
B) Secondary cultures, adult organisms
C) Primary cultures, adult organisms
D) Secondary cultures, embryos
E) Secondary cultures, primary cultures

Answer 1

Cultures produced from animal cells are obtained from primary cultures, embryos. Primary cultures require a liquid culture medium with a solid surface for attachment and growth. These cultures have a limited lifespan and can be transferred to another vessel with fresh growth medium to continue growing.

Step-by-step explanation:

Cultures produced from animal cells are obtained from primary cultures, embryos.

Primary cultures are freshly prepared from animal organs or tissues and require a liquid culture medium with a solid surface for attachment and growth. These cultures have a limited lifespan and undergo contact inhibition when cells come in contact with each other, triggering mitosis to stop. To overcome contact inhibition and continue growing the cells, they can be transferred to another vessel with fresh growth medium, which is called a secondary cell culture.