There are many genes in archaeal genomes that have no known function
Indicate whether the statement is true or false.
Answer: TRUE
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In this figure showing SDS-PAGE of the progressive stages of glycine N-methyltransferase purification, the marker lane indicates that the purified protein:
A. has approximately 32,000 amino acids. B. has a molecular mass of approximately 32,000. C. has a positive charge and a molecular mass of approximately 32,000. D. has a negative charge and a molecular mass of approximately 32,000. E. is only present when cells are induced with glycine.
Discuss factors that must be taken into account when setting standards for safe levels of exposure to potentially harmful chemicals in the environment. Explain why setting these standards is such a complex task
What will be an ideal response?
A single atom of carbon may form up to
__________ covalent bonds with other atoms. a. 2 b. 3 c. 4 d. 5 e. 6
The number of protons in an uncharged atom _____
A. equals the number of electrons B. equals the number of neutrons C. varies with the different isotopes D. equals the number of electrons in the outer orbital of the atom E. determines its mass number