Answer:
B. When Alfred Wegener propose the idea of continental drift
Explanation:
The first true explanation came from Alfred Wegener, who proposed the Plate Tectonic Theory. This theory stated, in a nutshell, that the continents different pieces that collided together at faults.
Technically, explorers found out this way back. If you consider this the answer choice, then C is your best answer.
They work like a lock and key. Each enzyme is designed to fit into a specific substrate. Well let me start by explaining what an enzyme is and then a subtrate. An enzyme is a protein that speeds up the chemical reaction in a living organism. An enzyme acts as a catalyst for specific chemical reactions, converting a specific set of reactants called substrates into specific products.
What are the answer choices?
Answer:
N-terminal signal sequence --> STS --> internal signal sequence --> STS --> internal signal sequence --> STS
Explanation:
Steroid Sulfatase (STS) is a signal localized in the endoplasmic reticulum, it catalyzes the desulfation reaction
N-Terminal is the protein domain that is outside of the cell membrane
The internal signal sequence directs the protein to the membrane of the endoplasmic reticulum, this signal is also responsible for open the membrane pore
