Why is hydrogen bonding of human DNA into double strands more advantageous than covalent bonding?

A. Hydrogen bonds are incompatible with proteins.
B. Hydrogen bonds increase the fidelity of transcription and translation.
C. Covalent bonds are more at risk for mutations than hydrogen bonds.
D. Covalent bonds are tighter and more permanent than hydrogen bonds.


D
In order for cell division to occur, the double strands of DNA must separate in each cell undergoing cell division. If covalent bonds held the two strands together, huge amounts of energy would be needed to separate the strands and cell division might not occur when it is needed. Hydrogen bonds are weak and little energy is needed to break them.

Nursing

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Which situations are exceptions to the statute of frauds principle? Choose all that apply

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BSA is used to provide accurate dosage calculations specific to the patient's size and severity of

illness. Indicate whether the statement is true or false

Nursing

The 1990s saw changes in health care that continue to impact today's health care environment. Which result best reflects the outcome of these changes?

A) Increased representation of RNs and LPNs/LVNs in the staffing mix B) Increased numbers of nursing administrators and fewer staff nurses C) Increased numbers of UAPs and reduced numbers of RNs D) Decreased use of ancillary health care support workers

Nursing

Which action(s) would let the nurse know that the patient has mastered a psychomotor skill? (Select all that apply.)

a. Describe the process verbally. b. Write a description of the process. c. Give a reciprocal demonstration of the process. d. Ask questions about the process. e. Demonstrate the process to another person while the nurse supervises. f. State whether the patient feels the process has been mastered.

Nursing