Which control mechanism is responsible for Escherichia coli using glucose as a carbon substrate and NOT inducing other pathways?

a. catabolite induction
b. catabolite repression
c. signal transduction
d. stringent response


Answer: C

Biology & Microbiology

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________ is the direct migration and penetration of cancer cells into neighboring tissues.

Fill in the blank(s) with the appropriate word(s).

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The skeleton of vertebrates serves several important functions. Among these are

_____ support and locomotion. _____ blood formation. _____ conduction of nerve signals. _____ protection of organs and soft tissues. _____ calcium homeostasis.

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The part of the brain that deals with the basic drives such as hunger, sex, and thirst is the:

a. cerebrum b. pons c. cerebellum d. thalamus e. hypothalamus

Biology & Microbiology

The chewy, stringy supporting strands in

celery are which cells?

a. xylem b. collenchyma c. phloem d. sclerenchyma e. parenchyma

Biology & Microbiology