(Question)
Q: What part of the cell controls what enters and leaves? Read this paragraph and choose the correct option from the provided answers: Like all other living cells, prokaryotes have a cell membrane. It controls what enters and leaves the cell. It's also the site of many metabolic reactions. For example, cellular respiration takes place in the cell membrane. Choices: - nucleus - protein - organism - membrane A:
(Answer)
membrane

(Question)
Q: What do the muscles of the gastrointestinal tract do? Read this paragraph and choose the correct option from the provided answers: Organs of the GI tract are covered by muscles that contract to keep food moving along. A series of involuntary muscle contractions moves rapidly along the tract, like a wave travelling through a spring toy. The muscle contractions are called peristalsis. The diagram in Figure below shows how peristalsis works. Choices: - break down food - secrete stomach acid - stop digestion - keep food moving A:
(Answer)
keep food moving

(Question)
Q: What kind of solids are generally classified by the forces that hold their particles together and include ionic, metallic, covalent network, and molecular types? Read this paragraph and choose the correct option from the provided answers: Crystalline solids are generally classified according the nature of the forces that hold its particles together. These forces are primarily responsible for the physical properties exhibited by the bulk solids. The following sections provide descriptions of the major types of crystalline solids: ionic, metallic, covalent network, and molecular. Choices: - distinct solids - helium solids - flat solids - crystalline solids A:
(Answer)
crystalline solids