You have a genetic defect that prevents your cells from making the amino acid tryptophan from indole and serine. Your cells might be lacking the proper information in their ________, which would direct the synthesis of the ________ that catalyzes

tryptophan synthesis.

Fill in the blank(s) with correct word


DNA; enzyme

Biology & Microbiology

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The Human Genome Project completed in 2003 focused on sequencing the genome(s) of _____

a. the mouse only b. humans only c. bacteria only d. humans and prokaryotes only e. humans and other model organisms

Biology & Microbiology

The world human population has increased dramatically during the past few centuries due to:

a. increased immigration. b. increased emigration. c. decreased death rates. d. increased birth rates. e. decreased birth rate

Biology & Microbiology

Bacterial plasmids and artificial chromosomes are used as ________ to insert foreign DNA into host cells and create recombinant genomes.

A. vectors B. clones C. subunits D. endonucleases

Biology & Microbiology

Excessive acid produced by the stomach can erode a hole, called a(n) ________, in the lining of the stomach.

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

Biology & Microbiology