Which of the following structures do not help the bacteria adhere to surfaces?

A) capsule B) pili C) fimbriae D) flagella E) slime layer


Answer: D

Biology & Microbiology

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Molecular phylogenies show all land plants are a monophyletic group. This suggests that _____

A) there were many different transitions from aquatic to terrestrial habitats B) wind-pollinated plants arose first C) land plants have undergone a diversification since they first colonized terrestrial habitats D) there was a single transition from aquatic to terrestrial habitats

Biology & Microbiology

Which disease that affects respiratory function is caused by an infectious organism?

A. lung cancer B. emphysema C. asthma D. cystic fibrosis E. pneumonia

Biology & Microbiology

Living systems have the capacity to detect environmental changes and compensate for them through

controlled responses. This is possible because living systems have ____.

a. diverse and varied receptors b. nerves c. photoreceptors d. hormones e. sensitivity

Biology & Microbiology

In the case of a proto-oncogene like Ras, both copies of the gene must be mutated to increase a predisposition to cancer.

Answer the following statement true (T) or false (F)

Biology & Microbiology