Question

1. which group of organisms consists of specialized cells? *

unicellular prokaryotes
multicellular prokaryotes
unicellular eukaryotes
multicellular eukaryotes

1. all humans begin as a single - celled zygote. after several divisions, cells begin *

to specialize by turning genes on and off. the process by which a stem cell can
specialize and become a skin cell or muscle cell is called ___
cell theory
differentiation
transformation
reticulum

Explanation:

For question 20, unicellular organisms have only one cell and don't have cell - specialization. Prokaryotes are simple organisms without complex cell - specialization. Multicellular eukaryotes have different cell types with specialized functions. For question 21, cell differentiation is the process by which stem cells become specialized cells like skin or muscle cells through gene regulation.

Answer:

1. Multicellular eukaryotes
2. differentiation