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