All of the following are TRUE regarding sickle cell disease EXCEPT:
A) patients have inherited an abnormal gene from both parents.
B) large clumps of sickle cells obstruct arterial blood flow.
C) the red blood cells to take on an abnormal curved appearance.
D) the red blood cells have a very short life span.
Question 2
Epinephrine causes vasoconstriction, relaxes bronchial smooth muscle, and:
A) increases cardiac output.
B) may complicate the condition of patients in neurogenic shock.
C) can cause the airway to swell.
D) decreases the dilation of blood vessels.
The effects of germ-line versus somatic cell mutations.
Photosyntheis in a plant cell
A single base substitution leading to a single amino acid substitution in the hemoglobin beta chain
Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell.
Raynaud’s disease
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf