What are zinc finger motifs, and why are they frequently encountered in descriptions of genetic regulation in eukaryotes?
What will be an ideal response?
Zinc fingers consist of amino acid sequences containing two cysteine and two histidine residues at repeating intervals. Interspersed cysteine and histidine residues covalently bind zinc atoms, folding the amino acids into loops (zinc fingers). They are one of the major groups of eukaryotic transcription factors.
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There were numerous cases throughout the United States of patients having bloody diarrhea all within a week of each other, many of which were hospitalized with severe cases Although the people spanned from California to New York, they all had attended a high school graduation party. Epidemiologists determined the common food factor was cheese curds homemade by a farmer. The home where the cheese curds were made was searched, and the cheese curds and milk used to produce them were taken to the local government lab. Among other microbes, Campylobacter jejuni was isolated from many of the cheese curds as well as the farmer's bulk tank milk. What should be done for those infected? What can be done to prevent this from happening again?
What will be an ideal response?
Which of the following is not a function of bone? a. Protect soft internal organs from harm
b. Support and anchor muscles. c. Blood cell formation. d. Reservoir for sodium and calcium ions. e. Change position of the body.
__________, the first group of vertebrates able to complete their life cycle on dry land, have water conserving skin
and kidneys, and amniote eggs. Fill in the blank(s) with the appropriate word(s).
If yeasts are grown under anaerobic conditions, pyruvate is converted first to __________ and then to
__________. a. citrate; oxaloacetate b. acetyl coenzyme A; citrate c. lactate; carbon dioxide d. acetaldehyde; ethyl alcohol e. acetaldehyde; lactate