The organic nonprotein components that aid in enzyme functioning are called
A. chaperones.
B. reactants.
C. coenzymes.
D. substrates.
E. products.
Answer: C
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The light-harvesting pigments in Bacteria are classified as bacteriochlorophylls
Indicate whether the statement is true or false.
Isoelectric focusing
A. directly reveals the identity of unknown proteins in a complex mixture. B. separates proteins based on the pH at which they are electrically neutral. C. separates proteins based on their size and shape. D. focuses the data gathered onto a specific protein or ORF.
Your patient was admitted for a gunshot wound about a week ago. As a precautionary activity, the doctor placed her on antibiotics for a few days while recuperating. Blood specimens are drawn on the patient a several times daily and sent to the microbiology lab for analysis of bacteria. Nothing has grown in culture. On her 4th day in the hospital, she has had no fever and no other signs of infection, but one set of blood specimens has been reported positive for a bacterium. The culture was identified by the lab as Staphylococcus epidermidis, a common organism on the skin. Predict the likely situation leading to this.
A. The patient is immunodepressed and very susceptible to bacterial infection. B. Staphylococcus epidermidis is a skin contaminant that ended up in the blood specimen as a consequence of poor aseptic technique during the venipuncture. C. Staphylococcus epidermidis has converted to a pathogen because of the antibiotics prescribed for the patient. D. Staphylococcus epidermidis is a very slow growing bacterium and was probably in the blood right after the gunshot wound, but failed to grow until now.
Flowering plants use animals or wind to transfer ________ between flowers.
A. megaspores B. ovules C. pollen D. seeds E. microspores