Feedback inhibition occurs when the product of a reaction can bind to an enzyme, shutting off the reaction.

a. true
b. false


Ans: a. true

Biology & Microbiology

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Which of the following protist lineages is appropriately paired with its supportive and/or protective structure?

A) Diatoms have an intricate, chalky, chambered calcium carbonate shell. B) Parabasalids have an internal support rod, made of cross-linked microtubules, that runs the length of the cell. C) Alveolates have tough plates in the cell wall that are made up of cellulose. D) Euglenoids cover themselves with tiny pebbles. E) Dinoflagellates are surrounded by a glass-like, silicone dioxide cell wall.

Biology & Microbiology

____________________ traits are controlled by two or more genes and significant environmental interactions

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is NOT a hormone?

a. gastrin b. secretin c. mucin d. cholecystokinin e. leptin

Biology & Microbiology

Nanoarchaeum equitans appears to be unique among living organisms in that it does NOT appear to synthesize

a. functional ATPase. b. functional DNA polymerase. c. functional RNA polymerase. d. a cell membrane.

Biology & Microbiology