According to your text, how many classes of IFs exist?
The proteins of intermediate filaments (IFs) are tissue-specific. Unlike microtubules or microfilaments, the amino acid composition of intermediate filaments varies from tissue to tissue. IFs are classified by the cell type or tissue in which they are found.
Answer: six
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Bacteria on fish caught in the Arctic Ocean would
A. be psychrophiles. B. be mesophiles. C. continue to grow while the fish is in the refrigerator. D. not grow very well in the refrigerator. E. be psychrophiles AND continue to grow while the fish is in the refrigerator.
The diet of the first primates included
a. insects. b. seeds. c. bugs. d. eggs. e. all of these.
Celiac disease (CD) is a common, usually inherited human disorder of intestinal inflammation that is triggered by eating gluten, a major protein in wheat and other cereal grains. It is the most frequent food intolerance
One of the three genes involved is for SH2B3, a protein involved in innate, nonspecific immune response to bacterial pathogens. Celiac sufferers frequently have a particular allele of this gene. It is so common that which of the following might be hypothesized? A) The gene must be common to all primate genomes. B) The gene must be common in most mammalian genomes. C) The allele must have been positively selected for during a period of especially frequent bacterial infections. D) The wild-type allele must have been selected against during periods of frequent bacterial infections. E) The gene must code for a T-cell receptor for a common bacterial component.
An intron is a section of ________
A) DNA that is removed during DNA processing B) RNA that is removed during RNA processing C) protein that is clipped out posttranslationally D) carbohydrate that serves as a signal for RNA transport E) transfer RNA that binds to the anticodon