Answer:
D
Explanation:
Because AB and C all are why a Fossil occur.
Answer:
Your answer is D) leaves. The leaves serve as the "solar panels" of the plant, because they gather sunlight for photosynthesis.
Answer:
Protein
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms.
Cell specialization is also referred to as cell differentiation and it can be defined as a biological process through which generic cells transform into specific cell types, so as to enable them perform certain functions within the body of a living organism.
Simply stated, it's the special function or job in the body of a living organism that are associated with cells.
Generally, cell specialization plays a significant role in the development of embryos.
Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
Cell specialization is fundamental and key for the growth and development of a multicellular organism.
Furthermore, cell specialization as a process is most directly regulated by protein; one super regulating protein encourages cell differentiation while the other tries to stop or prevent the process. These proteins are referred to as master regulating proteins or Helix-Loop-Helix proteins.
Smooth ER is responsible for synthesizing/making proteins these DON'T have ribosomes on them like rough ER has. Smooth ER is mainly known for making hormones and lipids. It's also found in both animal and plant cells as well as in eukaryotic cells and NOT prokaryotes. I hope this helps!
