Salivary amylase begins the breakdown of what substance?

a. amino acids
b. lipids
c. starch
d. protein


c. starch

Biology & Microbiology

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On an annual basis, the greatest flow of carbon between nonbiological reservoirs takes place between:

a. the atmosphere and Earth's rocks b. the ocean and Earth's rocks c. the ocean and the atmosphere d. plants and Earth's rocks e. aquatic organisms and the atmosphere

Biology & Microbiology

Vibration of the ________ bends hairs of the hair cells, which ultimately generate impulses in ________

A) basilar membrane; hair cells B) sensory neurons; tectorial membrane C) hair cells; sensory neurons D) organ of Corti; hair cells E) basilar membrane; sensory neurons

Biology & Microbiology

Ectotherms depend on the environment for their body heat

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

Why don't the countries that most need high-protein crops grow them?

A) High-protein crops usually require fertilizers, which may not be affordable to these countries. B) High-protein crops require extensive irrigation, which may not be affordable to these countries. C) High-protein crops are more difficult to process, making the foods they produce too expensive. D) High-protein crops are typically low in most other vital nutrients.

Biology & Microbiology