A white blood cell has a diameter of approximately 12 micrometers, or 0.012 um. A model represents its diameter as 24 pm. What is the ratio of model
size to actual size?
A. 200:1
B. 1:200
C. 1:2,000
O D. 2,000:1

Agas has a volume of 0.7 l at 300 mmhg. what would be the new volume at 900 mmhg

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.