Question

2 multiple choice 2.5 points why do scientists need to be able to study cells in a laboratory environment? so they can repeat experiments so they wont endanger patients lives because they need a large supply of identical cells all of the above

Explanation:

• Studying cells in a lab allows repeating experiments (to verify results).
• Using lab - grown cells avoids endangering patients (instead of taking cells directly from patients repeatedly).
• Labs can provide a large supply of identical cells (useful for consistent experiments). So all the given reasons are valid.

Answer:

D. All of the above (Note: Assuming the options are labeled A - D with A: So they can repeat experiments, B: So they won't endanger patients' lives, C: Because they need a large supply of identical cells, D: All of the above)