Intermediate filaments are most closely associated with which of the following?
a. actin
b. myosin
c. keratins
d. microvilli
e. pseudopodia
c
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A ________, a ________, and a ________ are the major parts of a nucleotide, whereas a ________ and a ________ are the major parts of a nucleoside.
Fill in the blank(s) with the appropriate word(s).
Which statement about a complete digestive system is FALSE?
a. It is characteristic of flatworms. b. It is a tube with two openings. c. Its regions are specialized to perform specific functions. d. Food can be ingested while previously eaten food is being digested. e. Food enters the mouth and is eliminated through the anus.
Though the majority of bacterial species can cause human disease, the bacteria living in your body is incapable of harming you." Which of the following is most accurate about this statement?
a. Both parts of the statement are true. b. Both parts of the statement are false. c. The first part of the statement is true, but the second part is false. d. The first part of the statement is false, but the second part is true. e. Both parts of the statement are based in opinion, not fact.
The lymphoid organ in which B lymphocytes are produced is the
A. spleen. B. lymph nodes. C. red bone marrow. D. thymus gland. E. All of these produce B lymphocytes.