HeLa cells are a group of cells that were removed from Henrietta Lacks in 1951. These cells have been growing ever since they were removed. Which research tool best aids in growing a large number of cells outside of a body over a long period of time? 1. microscopes
2. cell culturing
3. immunostaining
4. genetic methods

How can you approximate the number of calories required to keep you in energy balance?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.