A foreign antigen has entered the body, which has elicited the immune response. A helper T cell binds to an antigen fragment on an antigen-presenting cell. What happens next?
A) B cells produce more antibodies.
B) A cytotoxic T cell destroys the antigen.
C) Free antibodies attach to the antigens.
D) A macrophage engulfs the target antigen.
Question 2
Meat replacements consumed by vegetarians are usually made of ____.
A) soy protein
B) fish protein
C) bean plus rice proteins
D) bean plus cheese proteins
Types of tissue in the human body.
Summary of Cell Structures and Functions
Integumentary regulation of body temperature.
A transmission electron micrograph of cytokinesis in a cross section of a dividing cell
A nerve cell (neuron) has extensions called dendrites
Adult sponge, with a porous, asymmetrical body.