If properly constructed, a Winogradsky column can be used to isolate pure cultures
Indicate whether the statement is true or false.
Answer: FALSE
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Which of the following is an illness caused by a mutation in mitochondrial DNA?
A) Duchenne muscular dystrophy B) Hemophilia C) Leigh syndrome D) Marfan syndrome
What is one reason why tumor-suppressor genes make poor druggable targets?
A) Cancer-causing mutations in tumor-suppressor genes result in loss of function. B) Mutant alleles of tumor-suppressor genes generally result in a greater activity of the protein, which makes inhibiting the proteins more difficult. C) Most drugs cannot distinguish the normal and mutant forms of the tumor suppressor proteins. D) Drugs that can target-tumor suppressor proteins are difficult to deliver to cancer cells.
What is not a trace mineral
What will be an ideal response?
Ca2+-pumps in the plasma membrane and endoplasmic reticulum are important for _____________
(a) maintaining osmotic balance. (b) preventing Ca2+ from altering the activity of molecules in the cytosol. (c) providing enzymes in the endoplasmic reticulum with Ca2+ ions that are necessary for their catalytic activity. (d) maintaining a negative membrane potential.