Specific segments of DNA that code for a specific protein are called
A) nucleoli.
B) chromosomes.
C) nuclei.
D) genes.
E) mutations.
D
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Sometimes, malignant cells do not stay properly anchored in tissues because of the loss of function of:
a. plasma membrane adhesion proteins b. nuclear membranes c. cell walls d. oncogenes e. tumor suppressor genes
Worms all appear to be closely related but have distinct evolutionary histories, resulting in the classification of worms into ________ phyla
A) one B) two C) three D) four
The leafy fern that you might have as a house plant is the ____ generation
a. diploid sporophyte b. diploid gametophyte c. haploid sporophyte d. haploid gametophyte e. triploid sporophyte
A 33-year-old female presents with eyes that have been red and irritated for the past month. Discharge from the eyes is not apparent. She also has a recurrent low-grade fever and a rash on her chest and legs. Her joints have been achy for the past few months, and her mouth has been so dry it is often difficult to swallow food. Antinuclear antibody testing is performed, and a speckled pattern is observed on HEp-2 cells. Which follow-up test result would you expect for this patient?
A.) Positive ANCA B.) Presence of anti-SS-A or anti-SS-B C.) Decreased rheumatoid factor D.) Presence of antibody to dsDNA