Select your answer:
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Blood Pressure and Blood Vessels Reproductive System Vocabulary Soldiers of Defense Heart Structure and Double Circulation Cell and Tissue Vascular -ology Science Reproduction Homeostasis and Disease Coronary Heart Diseases Respiration Hospice Basics Fats and Coronary Heart Disease Nervous and Endocrine System Neuroanatomy of CNSOther quiz:
Major Internal Organs of the Body › ViewIt contains gastric juices,has layers of muscles that help in breaking down or squeezing proteins and destroying microorganisms in the food you eat.
A. bones
B. muscles
C. stomach
D. liver
Biochemistry › View
How many different amino acids do organisms use to build proteins?
A. 10
B. 12
C. 20
D. 22