This form of carbon results from cell respiration.
A) Producers
B) Carbon dioxide
C) Transpiration
D) limestone
B) Carbon dioxide
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Augustus Waller invented a machine that measures ____
a. blood pressure when the ventricles are contracting b. blood pressure when the ventricles are relaxed c. cardiac output d. electrical activity of the brain e. electrical activity of the heart
The smallest branches of ____ end with a large flame cell
a. nephrons b. hepatic tubules c. metanephridia d. Malpighian tubules e. protonephridia
Which of the following is located outside of the cell membrane and provides structural support to plant and prokaryotic cells?
Nucleus Centriole Golgi apparatus Cell wall
This group of proteins can actually punch holes in pathogenic cells
A) complement system B) interleukin I C) fibrinogens D) histamines