Burkholderia cepacia and Pseudomonas aeruginosa can be a particular problem with ________.
A. myasthenia gravis patients
B. decay of iron pipes under anaerobic conditions
C. pneumonia patients
D. cystic fibrosis patients
Answer: D
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Which change in a gene's DNA sequence would have the least effect on the eventual amino acid sequence produced from it?
A. Deletion of two consecutive nucleotides B. Addition of one nucleotide C. Addition/deletion of three consecutive nucleotides D. Substitution of one nucleotide AND addition of 1 nucleotide
An allele of the pea color gene specifies the enzyme Sgr, which normally functions in a pathway to break down chlorophyll during pea maturation, resulting in yellow mature peas. A second allele of the Sgr gene produces no enzyme and is the ________ allele.
A) dominant B) recessive C) wild-type D) functioning
Which of the following are lipids?
a. steroids b. triglycerides c. oils d. waxes e. all of these
Carbohydrates are an excellent source of energy for the body. If a candy bar and a pear contain an equal number of calories from carbohydrates, which is a healthier food and why?
A) The candy bar is healthier because it contains processed sugars, which provide a faster energy source. B) The pear is healthier because it contains fewer chemical bonds to be broken during digestion. C) The pear is healthier because it contains more vitamins, minerals, and fiber. D) The candy bar is healthier because it contains preservatives that the pear lacks.