What is the role of T-cells in the humoral immune response? A) Helper T-cells are converted to B-cells following clonal selection. The B-cells are activated to produce antibodies following antigen recognition Effector B-cells undergo clonal expansion after receiving a signal from memory T-cells. D) The B-cells are activated after receiving an interleukin signal from an effector T-cell,​

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!