Answer: B. They allow for specific substance to travel throughout the cell.
Explanation: I know this because carrier proteins and channel proteins are some types of embedded proteins.
B) Genotypes are directly selected
Answer:
Explained
Explanation:
Prokaryotic cells are generally smaller in size than the eukaryotic cells and thus the DNA in the prokaryotic cells are much smaller than the DNA in the eukaryotic cells therefore, the later organisms have many origins where replication occurs simultaneously. Moreover, Prokaryotic cells lack neucleus and whereas eukaryotic cells have neucleus in them which is bounded by the membrane.
D. sum of all chemical reactions in an organism
