1. Why should data be rejected in this scenario?
A. Data contradicts the control group.
B. Data were different from expectations.
C. Data cannot be displayed graphically.
D. Data are based on flawed methodology. Correct
Explanation
The correct answer is D because when data are based on flawed methodology, it means that the way the data were collected, analyzed, or interpreted was not done correctly. This can lead to unreliable results that do not accurately represent the population being studied. In this case, if the researcher's methodology was flawed, it would be a valid reason to reject the data as it would not provide a valid estimate of the average wing strength of all birds found in the American Northwest.
2. Which of the following properties does soap, an emulsifier, have that make it useful for washing dirt off one's hands with water?
A. Soap's dual polar and nonpolar nature helps bond oil and water. Correct
B. Soap's acidity causes grime to precipitate into the water.
C. Soap's rough texture physically scours grime off surfaces.
D. Soap's enzymatic action helps to dissolve grime into smaller particles.
Explanation
Soap acts as an emulsifier due to its dual polar (hydrophilic) and nonpolar (hydrophobic) nature, allowing it to effectively bond oil and water, making option A the correct choic
3. Which of the following structures is correctly associated with its immune function?
A. Bone marrow destroys worn out red and white blood cells.
B. Tonsils are where T-cells are generated and mature.
C. The spleen removes germs from the blood. Correct
D. Peyer's patches are where B-cells are generated and mature.
Explanation
The spleen is responsible for filtering blood and removing germs, making option C the correct association of structure and immune function.
4. The breakdown of lactose in the small intestine is mediated by the enzyme lactase, and the products are galactose and glucose. Galactose and glucose are which of the following?
A. Disaccharides
B. Oligosaccharides
C. Polysaccharides
D. Monosaccharides Correct
Explanation
Galactose and glucose are both simple sugars consisting of single sugar units. Therefore, they are classified as monosaccharides. This makes option D the correct answer.
5. Which of the following allows the skull to rotate on the neck?
A. Vertebral foramen
B. Spinous process
C. Atlas Correct
D. Sacrum
Explanation
The atlas is the first cervical vertebra that supports the skull and allows it to rotate on the neck. The vertebral foramen is an opening in the vertebra for the spinal cord, and the spinous process is a bony projection, not involved in rotation.