Bacteria often live in complex, multi-species communities, like the layer of plaque that grows on your teeth, such a community is called a(n) ____.

A) disneyfilm
B) biotome
C) microtome
D) biofilm
E) anatome


Ans: D) biofilm

Biology & Microbiology

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Inside the penis, there are ____ cylinders of spongy tissue

a. one b. two c. three d. four e. five

Biology & Microbiology

Refer to the accompanying figure. Based on the phenotypes of the third generation, the genotype of the father in the second generation must be:


a. homozygous for albinism.
b. heterozygous for hair color.
c. heterozygous for albinism.
d. X-linked.
e. dominant

Biology & Microbiology

Nearly all cells, including E. coli and yeast, naturally take up DNA from their surroundings without chemical treatment

Indicate whether the statement is true or false

Biology & Microbiology

The ____ hypothesis predicts that ecosystem functions will be maintained more reliably in natural communities when

multiple species perform a given ecological function but differ in their responses to environmental changes

a. scientific redundancy b. ecosystem function c. biological insurance d. natural community

e. fungal dominance

Biology & Microbiology