Cholera is a bacterial disease, in which fatal dehydration can occur due to loss of water into the intestines. Cystic fibrosis is a human genetic disease characterized by excess mucus buildup on the linings of the lungs, making breathing difficult. Cholera acts on intestine cells to force water transport out of the cells and the body. Cystic fibrosis has an abnormal CFTR transport protein that limits water transport out of the cells and the body. How does the bacteria that causes cholera, Vibrio cholera, trigger potentially life-threatening diarrhea?
A. Cholera toxin stimulates CFTR, leading to decreased transport of water into the intestines.
B. Cholera toxin causes a DNA genetic mutation that modifies the function of CFTR proteins.
C. Cholera toxin inhibits CFTR, leading to decreased transport of water into the intestines.
D. Cholera toxin inhibits CFTR, leading to increased transport of water into the intestines.
E. Cholera toxin stimulates CFTR, leading to increased transport of water into the intestines.
E. Cholera toxin stimulates CFTR, leading to increased transport of water into the intestines.
You might also like to view...
Which of the following is not an example of a fungal pathogen?
A. endophytes B. smuts C. rusts D. athlete's foot E. vascular wilt fungus
Which of the following is a TRUE statement?
a) It is always possible to determine the genotype of an individual from the phenotype. b) Genes come in different versions called genomes. c) A human with a somatic number of 47 would have 3 copies of some genes. d) A true breeder must always be homozygous dominant.
In temperate deciduous forests, most of the small flowers that grow on the forest floor must complete their life cycle quickly before tree leaves shade out most of the light. Many of these plants reproduce asexually by runners
What advantages does this have for such plants?
How would you describe the body of a fungus?
A. tiny threadlike mycelia collectively make up the hypha B. tiny threadlike mycelia collectively make up the septa C. tiny threadlike hyphae collectively make up the mycelium D. tiny threadlike septa collectively make up the mycelium E. tiny threadlike mycelia collectively make up the dikaryote