Proteins can buffer a drop in pH with their ________ side groups and can buffer an increase in pH with their ________ side groups
A) -PO4; -COOH
B) -NH2; -PO4
C) -PO4; -NH2
D) -COOH; -NH2
E) -NH2; -COOH
E
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Blood in the right atrium should travel next past the ________.
Fill in the blank(s) with the appropriate word(s).
Jamessa is performing a blood typing experiment in her anatomy and physiology lab. She takes a few drops of her own blood sample and mixes it with different antibodies. Her blood agglutinates when mixed with the anti-B antibodies, but it does not
agglutinate with the anti-A or anti-Rh antibodies. Determine her blood type and explain how you came to this conclusion. What will be an ideal response?
What are the two major methods by which cells communicate to coordinate their functions?
A) positive feedback loops and negative feedback loops B) chemical messengers and/or electrical signals C) effectors and responses D) temperature gradients and pressure gradients
Which one of the following blood vessels carries oxygenated blood?
A) superior vena cava B) inferior vena cava C) coronary sinus D) pulmonary artery E) pulmonary vein