Question

what is the approximate percentage of dead cells? the same view of the microscope slide, showing stained cells, is pictured below and in the view image tab. scroll down to select the correct answer. a) 1%

Explanation:

Step1: Count total cells

First, estimate total cells: ~50 total cells (dark + red)

Step2: Count dead (red) cells

Count red-stained dead cells: ~10 red cells

Step3: Calculate percentage

Use formula: $\text{Percentage} = \frac{\text{Dead Cells}}{\text{Total Cells}} \times 100$
$\text{Percentage} = \frac{10}{50} \times 100 = 20\%$
(Note: If we assume the only option shown is a distractor, but based on standard viability stains, the red cells are dead; if the full options included 20%, that is correct. However, since only 1% is shown, recheck: if total cells are ~100, dead ~1, but image shows more red cells. Correct estimate is ~20%, but if forced to use given option, but likely missing options. However, based on visual count:)

Step1: Re-estimate precisely

Count dark (live) ~40, red (dead) ~10. Total = 50

Step2: Compute percentage

$\frac{10}{50} \times 100 = 20\%$
(Since 1% is not matching, but if this is the only option, there is a discrepancy. But standard cell viability stain: red = dead, so correct approx is 20%. If the question's full options include this, that is the answer.)

Answer:

(Note: The provided option a) 1% does not match the visual estimate. The approximate percentage of dead cells is 20%. If additional options exist, the correct choice would be the one closest to 20%. If only 1% is provided, there may be an error, but based on the image, the reasonable answer is) 20%