Water evaporates from the ocean and land surfaces, is held temporarily as vapour in the atmosphere, and falls back to Earth's surface as precipitation. ... Water that infiltrates Earth's surface becomes groundwater, slowly seeping downward into extensive layers of porous soil and rock called aquifers.
Answer:
Antigens
Explanation:
Antigens can be defined as molecules that can bind to antibodies. Many authors prefer to define it as any substance capable of eliciting a response from the immune system, however there are antigenic substances that react with the antibody but are not able to stimulate its production.
Antigens are usually unknown molecules in the body. Molecules that detach from foreign cells such as bacteria, fungi, protozoa or even viruses can be considered antigens. Toxins released by bacteria are also examples of substances that can bind to antibodies.
When an individual's blood-type alleles have instructions that direct the construction of a specific set of chemicals that protrude from all red blood cells, these chemicals are the antigens.
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
Oxygen, water and carbon dioxide
