*Question*
Q: What is the stored food in a seed called? Read this paragraph and choose the correct option from the provided answers: The stored food in a seed is called endosperm . It nourishes the embryo until it can start making food on its own. Choices: - pollin - membrane - larval - endosperm A:
**Answer**
endosperm

*Question*
Q: What regulates the thyroid gland in a body? Read this paragraph and choose the correct option from the provided answers: The thyroid gland is regulated by a negative feedback loop. The loop includes the hypothalamus and pituitary gland in addition to the thyroid. Choices: - positive feedback loop - upper feedback loop - normal feedback loop - negative feedback loop A:
**Answer**
negative feedback loop

*Question*
Q: Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings; the chemistry of these compounds is called what? Read this paragraph and choose the correct option from the provided answers: Summary 20.1 Hydrocarbons Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings. The chemistry of these compounds is called organic chemistry. Hydrocarbons are organic compounds composed of only carbon and hydrogen. The alkanes are saturated hydrocarbonsthat is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds. Aromatic hydrocarbons contain ring structures with delocalized electron systems. Choices: - animal chemistry - inorganic chemistry - nuclear chemistry - organic chemistry A:
**Answer**
organic chemistry

*Question*
Q: What can happen spontaneously or as a result of mutagens in the environment? Read this paragraph and choose the correct option from the provided answers: Many mutations are not caused by errors in replication. Mutations can happen spontaneously, and they can be caused by mutagens in the environment. Some chemicals, such as those found in tobacco smoke, can be mutagens. Sometimes mutagens can also cause cancer. Tobacco smoke, for example, is often linked to lung cancer. Choices: - lesions - combustion - traits - mutations A:
**Answer**
mutations