Early work with Clostridium tetani and Corynebacterium diphtheriae demonstrated
A. the importance of thoroughly cooking food.
B. the usefulness of vaccines.
C. the potential threat from spore-forming bacteria.
D. that disease can be caused by poisonous substances produced by bacteria.
B.
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Select all of the following that are names of immature stages in various animals.
_____ nauplius. _____ trochophore ._____ caterpillar. _____ nymph. _____ swimmeret.
Which of the following is not true? a. Biological wealth can be exploited to discover useful chemicals
b. Governments must choose between policies good for their economies and policies good for the environment. c. Zea diploperennis was thought to be extinct until rediscovered by a Mexican college student. d. Wild maize, Zea diploperennis, is being protected for its genetic diversity and potential to help improve crops.
When house plants grow toward a window they demonstrate the ability of living organisms to respond to their environment
a. true b. false
Koch used ________ to culture bacterial cells in his laboratory
a. agar b. gelatin c. potatoes d. agar, gelatin, and potatoes