What is the role of B cells in the human immune system? A) the production of antibodies B) the destruction of lymphocytes C) the production of white blood cells D) movement to the thymus gland to build T cells

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.

Which sets of mrna codons could genetically come for a protein with the following amino acid composition

If t=tall and t=short what is the likelihood that the offspring will be tall? a.0% b.25% c.50% d.75%