Vacuoles are ________
A) membranous sacs
B) manufactured by ribosomes
C) composed of microtubules
D) found only in plant cells
A
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Hereditary nonpolyposis colon cancers (HNPCC) ____
a. are rare in the United States, but common in Europe b. begin with a mutation in the APC gene c. are caused by one-of-a-kind DNA sequences called microsatellites d. are caused by one mutation in a single gene e. are caused by several mutations in several different genes
Which of the following is a true statement about MALT?
a. MALT acts as an immune barrier for the mouth and esophagus. b. MALT works in conjunction with the systemic immune system. c. Adaptive and active immunity are formed by MALT. d. B cells in the MALT detect processed antigens on APCs.
Under Hardy-Weinberg equilibrium, are recessive phenotypes eventually eliminated?
a. yes b. no
Segmentation is the subdivision of the body into segments. True segmentation is found in which of the following phyla?
A. Mollusca, Chordata, Annelida B. Arthropoda, Chordata, Porifera C. Annelida, Mollusca, Arthropoda D. Arthropoda, Annelida, Chordata E. Echinodermata, Platyhelminthes, Cnidaria