G-protein-coupled receptors are found in both prokaryotes and eukaryotes

a. True
b. False


ANSWER: False

Biology & Microbiology

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In a bacterial cell, the three genes of the lactose operon are

A) expressed continuously. B) expressed when lactose synthesis is required. C) expressed only in the presence of lactose. D) never expressed, because they are pseudogenes.

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Use the concepts of antigenic drift and antigenic shift to describe why influenza causes both "routine" seasonal outbreaks as well as to periodically cause more serious global outbreaks, or pandemics

What will be an ideal response?

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The gonads produce steroids. Which organelle would likely be present in this tissue?

A. ribosome B. lysosome C. smooth endoplasmic reticulum D. mitochondria E. contractile vacuole

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Medical asepsis eliminates all microbes from an object or area

Indicate whether the statement is true or false

Biology & Microbiology