When two atoms share electrons in such a way that each atom has an octet of electrons in its outermost orbital, a ____ bond has formed.

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


Answer: covalent

Biology & Microbiology

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When light is absorbed by rhodopsin, ____

a. discs from the outer segment of the rods and cones begin to grow b. discs from the outer segment begin to shed c. cis-retinal is converted to trans-retinal d. trans-retinal is converted to cis-retinal e. the inner segment of the rods and cones releases neurotransmitters

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________ is a control method that removes microorganisms rather than inhibiting or killing them.

A. Sterilization B. Filtration C. Disinfection D. Radiation E. Boiling

Biology & Microbiology

Bacteria and fungi secrete ________ into plant and animal tissues to break down the complex organic compounds

Fill in the blank(s) with correct word

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What is the function of DNA polymerase?

A) introducing mutations into DNA for evolutionary adaptation B) synthesizing nucleotides from free sugars, phosphates, and bases C) halting DNA replication if a cell becomes cancerous D) breaking sugar-phosphate bonds to release free nucleotides for DNA synthesis E) joining together nucleotides as they are base-paired during DNA replication

Biology & Microbiology