Which element would the element lithium most likely form an ionic bond with?
a. Aluminum; atomic number = 13
b. Chlorine; atomic number = 17
c. Magnesium; atomic number = 12
d. Nitrogen; atomic number = 7
e. Silicon; atomic number = 14
B
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The Asian kudzu bug (Megacopta cribaria) arrived in Atlanta in 2009 and is quickly spreading across the South. In addition to eating kudzu, it also eats soybeans and can decimate entire crops. The kudzu bug is a type of ________ species.
A. control B. keystone C. invasive D. umbrella
A homeotic mutation results in which of the following?
A. Incorrect formation of the body axes B. Replacement of segments with parasegments C. Replacing of one body part with another D. Apotosis
All of the following represent potential therapy for patients with SCIDÂ except
A. transfusion with adensosine deaminase. B. bone marrow transplants. C. graft versus host. D. gene therapy. E. stem cell grafts.
The basic function of activated T cells is to battle
A) pathogens in blood or lymph. B) pathogens in interstitial fluid. C) pathogens that have already entered body cells. D) chemical mediators of immunity.