Answer: Define Active transport
Explanation: The moving of molecules or ions across the cell membrane.
Hope this helps!
Answer:
Explanation:
Immunity to a disease is achieved through the presence of antibodies to that disease in a person's system. Antibodies are proteins produced by the body to neutralize or destroy toxins or disease-carrying organisms. Antibodies are disease-specific. Viruses make us sick by killing cells or disrupting cell function. Our bodies often respond with fever (heat inactivates many viruses), the secretion of a chemical called interferon (which blocks viruses from reproducing), or by marshaling the immune system's antibodies and other cells to target the invader. A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response.
These molecules are called antigens, and they are present on all viruses and bacteria.
Answer:
B
Explanation:
Proteins do store energy and nucleic acids provide energy thats why B is correct.
Well, I know logically that both life and environment change over time. So I think the answer would be C, studying fossils shows us that both life and environments change over time. Hope this helps.
No, I don't think we adequately account for the environmental impact in the cost that consumers pay for coal. <span>Consumers are paying much too low a price for coal-generated electricity, because the price they pay does not take account of the very large external costs associated with generation.</span>
