Arthropods play a major role in the transfer of protozoan infections, the triatoma (reduviid, kissing) bug plays an important role in the transmission of
A. Plasmodium spp.
B. Cryptosporidium parvum
C. Trypanosoma cruzi
D. Anopheles spp.
E. Giardia intestinalis
Ans: C. Trypanosoma cruzi
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Molecular, biochemical, cellular, and morphological evidence supports the view that bryophytes are a monophyletic
group.
a. True b. False
Which of the following statements about effector cells is FALSE?
a. They are fully differentiated lymphocytes. b. They can develop from either B cells or T cells. c. They secrete immunoglobulins or interleukins depending on their origin. d. Cytotoxic T cells are effector cells e. Helper T-cells are not effector cells.
Select the best response to the question. ?You are reviewing a patient's sputum culture results that have tested positive for Staphylococcus epidermidis. How do you interpret these findings?
A) The patient has a respiratory infection. B) The patient's sputum is no longer sterile. C) This is part of the patient's normal flora. D) The results are inconclusive.
Answer the following questions true (T) or false (F)
1. Without photosynthesis, most animal life on the Earth could not survive. 2. Plasmodesmata allow plant cells to communicate with each other. 3. Gap junctions are found in plant cells.