*Question*
Q: In the chest, the trachea divides as it enters the lungs to form the right and left what? Read this paragraph and choose the correct option from the provided answers: In the chest, the trachea divides as it enters the lungs to form the right and left bronchi . The bronchi contain cartilage, which prevents them from collapsing. Mucus in the bronchi traps any remaining particles in air. Tiny, hair-like structures called cilia line the bronchi and sweep the particles and mucus toward the throat so they can be expelled from the body. Choices: - alveoli - ventricle - atrium - bronchi A:
**Answer**
bronchi

*Question*
Q: What happens when antibodies are transferred to a person who has never been exposed to the pathogen? Read this paragraph and choose the correct option from the provided answers: Passive immunity results when antibodies are transferred to a person who has never been exposed to the pathogen. Passive immunity lasts only as long as the antibodies survive in body fluids. This is usually between a few days and a few months. Passive immunity may be acquired by a fetus through its mother's blood. It may also be acquired by an infant though the mother's breast milk. Older children and adults can acquire passive immunity through the injection of antibodies. Choices: - acquired immunity - active disease - allergic reaction - passive immunity A:
**Answer**
passive immunity

*Question*
Q: In a fuel cell, energy is not stored; electrical energy is provided by what? Read this paragraph and choose the correct option from the provided answers: called an alkaline battery when adapted to operate under alkaline conditions. Button batteries have a high output-to-mass ratio; lithiumiodine batteries consist of a solid electrolyte; the nickel cadmium (NiCad) battery is rechargeable; and the leadacid battery, which is also rechargeable, does not require the electrodes to be in separate compartments. A fuel cell requires an external supply of reactants as the products of the reaction are continuously removed. In a fuel cell, energy is not stored; electrical energy is provided by a chemical reaction. Choices: - fusion reaction - carbon reaction - consumption reaction - chemical reaction A:
**Answer**
chemical reaction

*Question*
Q: What type of relationship is parasitism? Read this paragraph and choose the correct option from the provided answers: Parasitism is a symbiotic relationship in which one species benefits and the other species is harmed. The species that benefits is called the parasite. The species that is harmed is called the host. Many species of animals are parasites, at least during some stage of their life cycle. Most animal species are also hosts to one or more parasites. Choices: - primordial relationship - enzymatic relationship - hypodermic relationship - symbiotic relationship A:
**Answer**
symbiotic relationship