BI-2133

Results tables

Biology · Secondary 4 · Medium · Results tables

A scientist injects 2.0 × 10⁶ beads of diameter 1.0 µm into a placenta sample. After 3 hours, 0.5% of these beads are found in the umbilical cord blood. How many beads are in the umbilical cord blood?

$1.0 \times 10^4$ beads
$1.0 \times 10^3$ beads
$5.0 \times 10^4$ beads
$5.0 \times 10^3$ beads

Loading problem…