A researcher uses genetic recombination techniques to remove a toxin gene from a pathogen, producing a(n) (attenuated/inactivated/subunit/toxoid) vaccine
What will be an ideal response?
attenuated
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Prokaryotes ____
a. have a nucleus b. are multicellular c. always have cell walls d. are either bacteria or archaeans e. always have flagella
Photosynthetic organisms are ________
A) producers that make all of their organic matter from organic molecules that they take in B) consumers that obtain organic molecules from other living organisms C) producers that make all their own organic matter from inorganic molecules D) decomposers that obtain nutrients from the soil
When hydrogen and oxygen combine to form water, water would be
a) a product b) a reactant c) both a product and a reactant d) neither a product nor a reactant
The transfer of antibodies in breast milk to an infant is an example of ________ immunity
A) nonspecific B) passive C) humoral D) active