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
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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
Which disease that affects respiratory function is caused by an infectious organism?
A. lung cancer B. emphysema C. asthma D. cystic fibrosis E. pneumonia
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
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)