Which of the following statements about the classical pathway of complement activation is FALSE?
A) C1 is the first protein activated in the classical pathway.
B) The C1 protein complex is initiated by antigen-antibody complexes.
C) C3 is not involved in the classical pathway.
D) Cleaved fragments of some of the proteins act to increase inflammation.
E) C3b causes opsonization.
C
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Which one of the following macronutrients stores the most amount of energy per gram?
a. fats b. carbohydrates c. nucleic acids d. proteins
Ashante is having surgery for a blocked coronary artery. The physician is inserting a catheter with a tiny balloon to open the blocked vessel
What is this procedure called, and what else might the physician do to keep the artery open in the long term?
A sharp blow to the stomach can "knock the wind out of you." This temporarily paralyzes the diaphragm, making it hard to breathe. Aside from a lack of oxygen making you pass out, what effect would this have on blood pH?
A) O2 would build up in the blood, making it more basic. B) CO2 would build up in the blood, making it more basic. C) O2 would build up in the blood, making it more acidic. D) CO2 would build up in the blood, making it more acidic.
The small circles of DNA found in bacteria are called GENOMES.
a. true b. false