Charles Yanofsky helped decipher the genetic code working with the ________ biosynthesis genes in ________.

A) leucine; Salmonella enteritidis
B) phenylalanine; Klebsiella pneumoniae
C) tryptophan; Escherichia coli
D) glycine; Serratia marcescens


C) tryptophan; Escherichia coli

Charles Yanofsky helped decipher the genetic code working with the tryptophan biosynthesis genes in Escherichia coli.

Biology & Microbiology

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A(n) ______ is an organized unit of DNA sequences that enables a segment of DNA to be transcribed into RNA and ultimately results in the formation of a functional product.

A. chromosome B. trait C. allele D. gene E. expression

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The biomass of a community is the weight of the

a. material decomposed in a year. b. producers. c. living organisms. d. consumers. e. decomposers.

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This enzyme cleaves both strands of DNA, swivels the ends of the broken strands to relieve the torsional stress, and then rejoins the strands.

A. gyrase B. ligase C. ribonuclease D. catalase E. helicase

Biology & Microbiology

Covers ends of bones at joints, supports the nose and airway passages.

What will be an ideal response?

Biology & Microbiology