The first person acknowledged to have seen living,
moving cells by using a microscope was
a. Robert Hooke.
b. Robert Brown.
c. Galileo Galilee.
d. Rudolf Virchow.
e. Anton van Leeuwenhoek.
Answer: e
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A ________, a ________, and a ________ are the major parts of a nucleotide, whereas a ________ and a ________ are the major parts of a nucleoside.
Fill in the blank(s) with the appropriate word(s).
Tropisms explain how plants can move from place to place
a. True b. False
In an experiment examining adrenergic receptors, epinephrine alone was not able to trigger an increase
in cAMP, but when beta receptors were fused with animal cells, there were high levels of cAMP. What was occurring?
a. activation of epinephrine. b. protein kinase inhibition. c. activation of adenylyl cyclase. d. protein kinase amplification. e. both activation of adenylyl cyclase and protein kinase amplification.
In Arabidopsis, the monopteros gene regulates:a
positional effects in leaves.
b. the activity of the vascular cambium. c. the differentiation of wounded parenchyma cells into tracheids. d. apical-basal pattern formation. e. the location of the preprophase band.