Which characteristic is not associated with b lymphocytes? a. demonstrate surface immunoglobulin (sig) b. can directly lyse a foreign antigen c. participate in an anamnestic response as memory cells d. differentiate into plasma cells with antigenic stimulation?

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

What do we call an individual that has inherited two identical alleles for the same trait? a.homozygous b.heterozygous c.monozzygous