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The small intestine is the site of digestion and absorption of nutrients. A single layer of epithelial cells lines the small intestine. In the duodenum (the first section of the small intestine), these epithelial cells secrete large quantities of digestive enzymes. Which of the following features would be typical of these epithelial cells? a) They contain large numbers of lysosomes b) They have more smooth endoplasmic reticulum than rough endoplasmic reticulum c) They contain large quantities of rough endoplasmic reticulum d) They have larger nuclei than cells that secrete large quantities of lipids e) They have multiple nucleoli.
A female cat in heat urinates more often and in many places. Male cats are attracted to the urine deposits. What is a proximate cause of this increased urination?
A single nucleotide addition given through a single nucleotide deletion approximately 20 bp apart in the DNA causes a change in the protein sequence from
What are synonymous and nonsynonymous substitutions? What are the evolutionary implications of a high nonsynonymous/synonymous substitution ratio?
What are Human Leukocyte Antigens.
Determine the major difference between the cytoskeleton of bacteria and eukaryotic cells and if you were to analyze a DNA sample from a eukaryotic cell.
The middle ear is connected to the throat by a tube called the eustachian tube. All are lines by a continuous mucus membrane. Using this info, describe why a throat infection may lead to an ear infection.
The transformation was successful, however, when my plate with ten uL did not show any colony growth, whereas, my 200 uL plate showed colony growth.
Ethanol in the body is oxidized to acetaldehyde by liver alcohol dehydrogenase. Other alcohols are also oxidized by LADH. For example, methanol, which is mildly intoxicating.
In wild petunias, the allele for red flower color ( R ) is dominant over the allele for white flower color ( r ). We sample a population and find 225 plants have white flowers and seventy-five have red flowers.
Which statement is false regarding cytotoxic T cells?
your hair is composedof protein known as keratins that have an alpha helix- like fibrous structure. the alpha helix-structure has approximately 3.6 amion acids per turn of of the helix and a linear dimension of 0.54nm per turn of the helix.
Suppose you poured iodine on your plate and notesed clearing in the uninoculated area, as well as around both of your transferred cultures. What are some possible explanations for this occurrence?
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