In the life cycle of a bread mold, the stage in which diploid nuclei occur is
A. the gametangium.
B. the aseptate hypha.
C. the asexual spores.
D. the sporangium.
E. the zygosporangium.
E. the zygosporangium.
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Answer the following statement true (T) or false (F)
What is immunity?
a. an organism’s capacity to resist infection only b. an organism’s capacity to both resist and combat infection c. a pathogen d. an organism’s capacity to combat infection only e. a set of genetic instructions
Tumor suppressor genes are distinguished from proto-oncogenes due to the fact that tumor suppressor genes normally _____ while proto-oncogenes _____
1.act at either the G1/S or the G2/M control point to inhibit cell division / encode proteins that stimulate cell growth and division 2.turn on or increase the rate of cell division / mutate to form oncogenes 3.act at either the G1/S or the G2/M control point to inhibit cell division / are switched off when mutated 4.none of the choices
Which cells play the greatest role in allergic symptoms?
a. T cells b. monocytes c. plasma cells d. mast cells e. eosinophils