The antibiotic penicillin was originally derived from
A) Archaea.
B) chemical factories.
C) bacteria.
D) fungi.
E) plants.
D
You might also like to view...
Earth's larges phosphorus reservoir is _____
a. the atmosphere c. sediments and rocks b. bird droppings d. living organisms
Four of the five features listed below are found in the
same animal. Select the exception. a. first segmented form b. possess nephridia c. jointed appendages d. clitellum e. complete gut with closed circulatory system and coelom
Which of the following is a receptor that responds to light?
A. gibberellins B. phototropin C. cytokinins D. phytochrome E. Phytochrome and phototropin are correct.
Which technique is used to help reduce experimenter bias?
A) Create experiments that are reproducible and repeatable. B) Control extraneous variables as much as possible. C) Include a control group in your experiment. D) Be aware of potential placebo effects. E) Keep the experimenter blind to the conditions in an experiment or its purpose.