Charles Darwin and his son experimented with which plant growth response?
A. gravitropism
B. circadian rhythms
C. phototropism
D. heat shock
E. thermotropism
C. phototropism
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Fluid-filled sacs that may store amino acids, sugars, toxins, and ions in plant cells are called ____
a. plastids b. central vacuoles c. peroxisomes d. vesicles e. Golgi bodies
Vlad, 28 years old, is a slender, jumpy man with eyes that seem to bulge out of their sockets. His heart rate is unusually fast. Which of the following conditions does Vlad most likely have?
A) Addison's disease B) acromegaly C) Cushing's syndrome D) Graves' disease
The site of gravity perception in roots is the root apical meristem
____________________ Indicate whether the statement is true or false.
Cholesterol is a necessary component of the plasma membrane of all animal cells.
Answer the following statement true (T) or false (F)