CSF contains high levels of complement and circulating antibodies to prevent infection of the brain and spinal cord
Indicate whether the statement is true or false
FALSE
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An ________ pathogen can cause disease in a host with impaired resistance.
Fill in the blank(s) with the appropriate word(s).
Which features are commonly found in the Arthropods?
a. Endoskeleton, antennae and metamorphosis b. Endoskeleton, proglottids and molting c. Exoskeleton, antennae and proglottids d. Exoskeleton, antennae and nematocysts e. Exoskeleton, antennae and metamorphosis
Which of the following is not a benefit of
trees? a. they produce oxygen. b. they absorb carbon dioxide. c. they prevent erosion. d. they prevent flooding. e. all of these are a benefit of trees.
An organ is defined as
a. a single tissue grouped together to perform a specific function. b. 2 or more tissues in specific proportions grouped together to perform a specific function. c. cells of different tissues linked together by the circulatory system to allow multiple functions. d. only the reproductive parts in plants. e. none of these.