What is the role of T-cells in the humoral immune response? A)
Helper T-cells are converted to B-cells following clonal selection,
B)
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.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

List five ways we are indebted to phytoplankton