Hydrogen bonds function to
hold carbohydrates and DNA in their 3-D shape
hold proteins and DNA in their 3-D shape
hold carbohydrates and triglycerides in their 3-D shape
hold proteins and RNA in their 3-D shape
The Correct Answer is B
A. Hold carbohydrates and DNA in their 3-D shape: Carbohydrates rely more on glycosidic bonds and branching patterns for their structure, while hydrogen bonding has only a minor role. DNA, however, depends heavily on hydrogen bonds between nitrogenous bases for stability.
B. Hold proteins and DNA in their 3-D shape: Proteins maintain their secondary and tertiary structures through hydrogen bonds between amino acid side chains and peptide backbones. DNA depends on hydrogen bonds between complementary bases, which provide stability while still allowing strand separation during replication.
C. Hold carbohydrates and triglycerides in their 3-D shape: Triglycerides are primarily stabilized by ester bonds and hydrophobic interactions. Carbohydrates do not depend significantly on hydrogen bonds for their three-dimensional organization.
D. Hold proteins and RNA in their 3-D shape: While RNA can fold into complex structures stabilized partly by hydrogen bonds, proteins and DNA are more classically described as relying on hydrogen bonding for maintaining stable 3-D conformations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. On the forehead: Placing a thermometer on the forehead measures temporal artery temperature, not axillary temperature. This method is non-invasive but does not reflect axillary placement.
B. In the armpit: The axillary method involves placing the thermometer in the child’s armpit. It is a safe, non-invasive technique suitable for infants and small children, though it may read slightly lower than oral or rectal temperatures.
C. Under the tongue: Oral temperature measurement is done by placing the thermometer under the tongue. This is different from axillary measurement and may not be suitable for very young children.
D. In the rectum: Rectal temperature measurement is more invasive and provides a reading closer to core body temperature, but it is not used when taking an axillary temperature.
Correct Answer is D
Explanation
A. Right lower quadrant: The right lower quadrant primarily contains the appendix, cecum, and parts of the small intestine.
B. Left lower quadrant: The left lower quadrant contains parts of the descending and sigmoid colon and portions of the small intestine.
C. Right upper quadrant: The right upper quadrant houses the liver, gallbladder, and portions of the pancreas, but not the majority of the stomach.
D. Left upper quadrant: The stomach is located in the left upper quadrant of the abdominopelvic cavity, positioned inferior to the diaphragm and lateral to the liver and spleen.
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