Oral bacteria on the tooth surface
A. use fimbriae and slime layers to adhere.
B. develop a biofilm.
C. metabolize sucrose, produce sticky glucans, and form plaque.
D. All of the above are correct.
Answer: D
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An individual heterozygous for sickle-cell disease produces both normal and abnormal polypeptides. This is an
example of ____.
a. epistasisb. incomplete dominance c. polygenic inheritance d. multiple alleles e. pleiotropy
The shape of a virus is determined by its
A. envelope. B. RNA. C. DNA. D. coat protein organization. E. host.
Which fiber adds strength to connective tissue?
a. cartilage b. adipose tissue c. collagen d. loose connective tissue e. blood
Fibrous structural proteins of the extracellular matrix are embedded in gels formed from polysaccharides called
a. elastin. b. fibronectin. c. glycosaminoglycans (GAGs). d. laminin.