The United States contains at least one biodiversity hot spot.
Answer the following statement true (T) or false (F)
True
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A student brings you an animal to identify. It has a cephalothorax and no antennae. You would place it
in subphylum:A. Crustacea. B. Myriapoda. C. Hexapoda. D. Chilicerata. E. Hirudinea
What are vestigial structures?
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Microbial contamination always results in infection. 2. Influenza is an example of a chronic disease. 3. Biofilms provide an alternative means for bacteria to attach to surfaces within the body.
Which method of hiding from the host immune system is incorrectly matched with its description?
A) latency: a pathogen exists quietly inside the host cell B) antigen variation: the pathogen frequently switches its antigens C) living intracellularly: a pathogen resides on the surface of a host cell where it is hidden by host cell surface molecules D) antigen mimicry: the pathogen's antigens are similar in structure to host molecules E) antigen masking: the pathogen covers itself in host factors to avoid detection of its own antigens