List the three major epigenetic mechanisms
What will be an ideal response?
(1 ) Addition or removal of methyl groups from DNA, (2 ) chromatin remodeling by adding and removing chemical groups from histone proteins, and (3 ) regulation of gene expression by noncoding RNA molecules.
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Monocots' lack of vascular cambium is due to an evolutionary reversal
A. true B. false
You are wanting to modify plant cells. With the procedure you are using, the plant cells must be in a plasmolyzed state. This means that the plant cells must be placed in a(n)
A) acid solution. B) hypotonic solution. C) isotonic solution. D) basic solution. E) hypertonic solution.
Why do plants growing outside often have shorter and thicker stems than plants of the same species grown indoors?
A. The plants inside have a more constant source of light and therefore a higher level of phytochrome. B. The outdoor plants are subject to mechanical stresses and they are exhibiting a thigmomorphogenic response. C. The outdoor plants are subject to touch by animals and other plants and are exhibiting a thigmotropic response. D. The indoor plants have elevated levels of auxin and are therefore taller than the outside plants. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about growth of protected vs. exposed plants? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In what ways are oxidative phosphorylation and photophosphorylation similar?
A. Proton motive force is generated B. ATP synthase enzyme phosphorylates ADP to make ATP C. Water is split to provide electrons D. An electron transport chain is used E. The source of energy is highly reduced organic compounds