What is the main form of nitrogenous waste released by aquatic invertebrates to their environment?
a. urea
b. ammonia
c. nitrate
d. uric acid
Ans: b. ammonia
Biology & Microbiology
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Earth is essentially a closed system with respect to ____
a. energy b. matter c. oxygen d. photosynthesis e. ecosystems
Biology & Microbiology
Different molecular forms of the same gene are __________. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
The ________ method provides an estimate of the CFUs (colony-forming units) in a sample
A) Coulter-counter B) viable plate-count C) streak-plate D) turbidity E) direct microscopic-count
Biology & Microbiology
Which class of macromolecules store and communicate genetic information?
What will be an ideal response?
Biology & Microbiology