Question

question 5 of 16 > institutes of health (nih) demonstrated that a 40% solution of household bleach could disinfect utensils contaminated with cwd prions. new research like this could help inform public health and wildlife agency recommendations for reducing the risks posed by cwd. classify each research element of prion diseases as a component of either an observational or experimental study.
observational
experimental
answer bank
scientists fed infected flesh to monkeys.
researchers identified cwd in male deer.
a 40% bleach solution deactivates cwd prions.
mad cow disease is linked to vcjd in humans.
the cdc surveyed u.s. residents.

Explanation:

To solve this, we first recall the definitions:

• Observational Study: Observes/measures without manipulating variables (e.g., surveys, identifying existing phenomena, linking existing conditions).
• Experimental Study: Involves manipulating variables (e.g., testing treatments, feeding subjects to observe effects).

Step 1: Classify "Observational" elements

• Researchers identified CWD in male deer: Observing existing CWD in deer (no manipulation).
• Mad cow disease is linked to vCJD in humans: Analyzing existing associations (no manipulation).
• The CDC surveyed U.S. residents: Surveying (observing) existing opinions/experiences (no manipulation).

Step 2: Classify "Experimental" elements

• Scientists fed infected flesh to monkeys: Manipulating (feeding infected flesh) to observe effects (experimental manipulation).
• A 40% bleach solution deactivates CWD prions: Testing (manipulating) bleach solution to observe deactivation (experimental manipulation).

Observational (Drag these here):

• Researchers identified CWD in male deer
• Mad cow disease is linked to vCJD in humans
• The CDC surveyed U.S. residents

Experimental (Drag these here):

• Scientists fed infected flesh to monkeys
• A 40% bleach solution deactivates CWD prions

Answer:

To solve this, we first recall the definitions:

• Observational Study: Observes/measures without manipulating variables (e.g., surveys, identifying existing phenomena, linking existing conditions).
• Experimental Study: Involves manipulating variables (e.g., testing treatments, feeding subjects to observe effects).

Step 1: Classify "Observational" elements

• Researchers identified CWD in male deer: Observing existing CWD in deer (no manipulation).
• Mad cow disease is linked to vCJD in humans: Analyzing existing associations (no manipulation).
• The CDC surveyed U.S. residents: Surveying (observing) existing opinions/experiences (no manipulation).

Step 2: Classify "Experimental" elements

• Scientists fed infected flesh to monkeys: Manipulating (feeding infected flesh) to observe effects (experimental manipulation).
• A 40% bleach solution deactivates CWD prions: Testing (manipulating) bleach solution to observe deactivation (experimental manipulation).

Observational (Drag these here):

• Researchers identified CWD in male deer
• Mad cow disease is linked to vCJD in humans
• The CDC surveyed U.S. residents

Experimental (Drag these here):

• Scientists fed infected flesh to monkeys
• A 40% bleach solution deactivates CWD prions