An antigen triggers a response from the immune system and an antibody is produced. All antibodies are immunoglobulins, therefore, the correct answer is immunoglobulin. More specifically, an immunoglobulin is a protein produced by plasma cells to fight and neutralize pathogens. To do so, the immunoglobulin has a specific region which is complementary to a specific region of the antigen. Immunoglobulin's mechanism of action is to bind to the pathogen and either block its action or trigger a response of other cells of the immune system.
The major difference between viruses and living things are that most living things can reproduce independently, whereas viruses must infect living cells in order to reproduce. The correct answer is C.
Complex molecules are broken down into smaller molecules during catabolic processes, which results in a net release of chemical energy.
Complex molecules are broken down into simpler ones through catabolic processes, which often result in energy release. In catabolic processes, energy held in the bonds of complex substances, such as glucose and lipids, is released.
There are two main branches of metabolism: the catabolic (or energy-producing) branch and the anabolic (or energy-using) branch. Catabolism is the destructive branch, which produces energy. Larger, more complex molecules are broken down into smaller, simpler molecules in catabolic processes, which release energy in the process.
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Answer:
1. B Prokaryotes lack a nucleus and membrane-bound organelles
2. C glucose
