Swollen lymph nodes signal infection and result from increased numbers of ________ that build up in the lymph nodes
Fill in the blank(s) with correct word
lymphocytes
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Controversy surrounds the use of zinc-containing nasal sprays as a cold remedy, since they have been associated with anosmia (loss of smell). If true, this is likely due to the sprays damaging which tissue?
A. central nervous system B. osmic nerve C. peripheral nervous system D. neuroglial system Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about olfaction? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Chlamydias are bacteria that possess cell walls, but lack peptidoglycan
Indicate whether the statement is true or false.
The presence of hydrochloric acid in the stomach serves all of the following purposes EXCEPT
a. activates pepsinogen. b. emulsifies fats. c. inactivates amylase. d. kills bacteria. e. unfolds proteins.
What is the function of troponin and tropomyosin during skeletal muscle contraction?
A) To generate an action potential B) To regulate bonding between actin and myosin C) To remove calcium from the muscle fiber D) To increase the amount of calcium entering the muscle fiber E) To prevent over-contraction of muscle fibers