Name the process by which a cell makes a copy of its DNA so it can give complete and identical copies of all of its genes to each daughter cell.
What will be an ideal response?
Replication
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Some microbes convert iron to magnetite which is then used as an internal compass to help position the microbe correctly in its environment.
Answer the following statement true (T) or false (F)
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.
If an aerobic organism stopped taking in oxygen, which process would stop first?
a. the splitting of glucose into two pyruvates b. the reduction of NAD+ to NADH c. the release of carbon dioxide d. electron transfer phosphorylation e. the initiation of the Krebs Cycle
Which genetic disorder is an inborn error of metabolism?
a. sickle-cell anemia b. Alzheimer’s disease c. Werner’s syndrome d. Will’s disease e. alkaptonuria