One of the dangers of smoking is that it disrupts the defensive system that utilizes ciliary action of what type of specialized epithelium?
A. columnar epithelium
B. stratified epithelium
C. glandular epithelium
D. cuboidal epithelium
E. pseudostratified epithelium
Answer: E
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Which one of the following RNA types is most abundant in mammalian cells?
A. mRNA B. tRNA C. miRNA D. rRNA E. snRNA
If an Arabidopsis plant does not express homeotic genes during flower development
A. The plant will die. B. The plant will only develop to the heart stage. C. The plant will not develop cotyledons. D. The plant will develop leaves instead of flowers. E. The plant will develop flowers instead of leaves.
Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. Based on this pedigree, what is the most likely mode of inheritance?
A) Dominant
B) Recessive
C) Either dominant or recessive
D) Cannot be determined
Rheumatic fever is a sequalae of repeated infection with Streptococcus pyogenes. The pathogenesis involved in this complication is molecular mimicry of the valves of the heart
a. true b. false