Fruit that forms on an unpollinated plant in response to a hormone will lack
A) flavor.
B) seeds.
C) rind.
D) naturally occurring hormones.
Answer: B
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Escherichia coli has not been found to be pathogenic in humans.
Answer the following statement true (T) or false (F)
When a planarium is cut in half, a head will regenerate from the wounded anterior end and a tail will regenerate from the wounded posterior end. This is an example of
A. conditional specification. B. autonomous specification. C. fate mapping. D. Spemann's organizer. E. transforming growth factor.
Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the assembly of
microtubules. Speculate how this drug works to inhibit cancer cell growth.
a. Vinblastine inhibits transition from G1 to S. b. Vinblastine inhibits transition from S to G2. c. Vinblastine inhibits cytokinesis. d. Vinblastine disrupts mitotic spindle formation and consequently mitosis. e. Vinblastine inhibits cyclin production.
Impulses conducted along the muscle fiber's transverse tubules stimulate the release of calcium ions into the cytoplasm
A. from the sarcoplasmic reticulum. B. from the actin and myosin subunits. C. from the troponin. D. from the extracellular fluid in the neuromuscular junction. E. from the Z line.