Why can a skin test be used to detect an infection associated with the lungs as in the case of TB?
A. Skin is a type of epithelial tissue, just like
lung tissue.
B. TB exposure can also occur on the skin.
C. Memory T cells and B cells are present
throughout the immune system.
D. All of the answer options are correct.
C
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In the three-tier Laboratory Response Network, confirmed bioterrorism agents should be sent to which laboratory?
a. Clinical b. Sentinel c. Reference d. National
In which of the stages below does each
chromosome consist of two DNA molecules? I. metaphase II. telophase III. prophase IV. anaphase a. III and IV b. I, III, and IV c. I and III d. I, II, and III e. I, II, III, and IV
Protection from predators
A) tracheids and phloem B) secondary compounds C) cuticle D) alternation of generations
When substrate-level phosphorylation occurs, it means that
A. ATP is converted into ADP plus a phosphate group. B. ADP is converted into ATP by the addition of a phosphate group. C. NADH is converted into NAD+ plus a proton. D. NAD+ is converted into NADH.