Salivary glands secrete _________ to start the digestion of _________.

A. amylase; starch
B. trypsin; proteins
C. amylase; fats
D. pepsin; proteins
E. lactase; milk


A. amylase; starch

Biology & Microbiology

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What are the symptoms of a TB infection?

A. runny nose, sore throat, postnasal drip B. skin rash, fever C. bad cough, chest pain, coughing up blood or sputum D. opportunistic infections, chronic diarrhea E. lethargy, general malaise

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In the United States, every clinical and research institution requires that workers be protected from ________ that is contracted almost exclusively from handling patient specimens (rather than from known exposure or accidents)

A) anthrax B) hepatitis B C) drug-resistant mycobacteria D) influenza

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A maple tree's seeds occur in pairs that are enclosed and attached to flat "wings" that are made of a papery tissue. The wings' shape allows them to spin in the air as they fall from the tree; this unusual motion has earned them the nickname "helicopter

seeds." Maple tree seeds are most successful when they are dispersed by A) wind. B) water. C) mammals. D) birds.

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Acetylcholine is secreted by which of the following structures?

Sarcoplasmic reticulum Sarcomere Motor neuron Troponin-tropomyosin complex

Biology & Microbiology