The phase change of an apical meristem from the juvenile to the mature vegetative phase is often revealed by _____
A) a change in the morphology of the leaves produced
B) the initiation of secondary growth
C) a change in the orientation of preprophase bands and cytoplasmic microtubules in lateral meristems
D) the activation of floral meristem identity genes
A
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The class of macromolecules in microorganisms that contributes MOST to biomass is
A) carbohydrates. B) DNA. C) lipids. D) proteins.
Explain why enzyme replacement therapy cannot cure a genetic disease, and why gene therapy offers the only cure
What will be an ideal response?
If, during a dissection, you were asked to place a pin in the part of the kidney containing the collecting duct, you would pin the
A. renal periphery. B. renal cortex. C. glomerulus. D. collecting duct. E. renal medulla.
Which statement below is an accurate description of receptor-mediated dimerization?
a) Ligands act as allosteric inhibitors that turn off the ability of their receptors to form dimers. b) Ligands act as bridging factors that allow the receptors to dimerize. c) Ligands act as allosteric regulators that turn off the ability of their receptors to form dimers. d) Ligands act as allosteric regulators that turn on the ability of their receptors to form dimers. e) Ligands act as allosteric inhibitors that turn on the ability of their receptors to form dimers