zea mays is the scientific name of the corn plant. Zea is the __________ name
a. class
b. division
c. genus
d. ordinal
e. species
C
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If purple flower color is dominant in pea plants, a cross between true breeding P generation purple and white plants will
result in ____.
a. all white flowers in the F1 generation b. all purple flowers in the F1 generation c. all purple flowers in the F1 generation but a lighter purple than in the parents d. mostly purple flowers in the F1 generation, with an occasional white flower e. half of the plants having purple flowers and half having white flowers
A tracer is a substance with what attached to it?
a. a radioisotope b. water c. glucose d. ion e. antibodies
______________ is a negative emotional state generally associated with a blocked goal.
A. Frustration B. A hassle C. Stress D. Conflict
Which cells in the immune system produce memory cells?
A) lymphocytes B) eosinophils C) mast cells D) dendritic cells