Which is the chemical bond formed when an electron is shared between two elements?
a. Ionic bond
b. Covalent bond
c. Electronic bond
d. Hydrogen bond
b. Covalent bond
A covalent bond is the chemical bond formed when an electron is shared between two elements.
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Cells conserve energy and resources by making active proteins only when they are needed. If a protein is not needed, which of the following methods of control would be the most energy-efficient?
A. block transcription B. degrade the mRNA after it is made C. prevent translation of the mRNA D. degrade the protein after it is made 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 transcription and translation? Consider Possibilities · What other information is related to the question? · What other information is related to the question? Which information is most useful? · Consider the different answer options. Which can you rule out? 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?
Which blood type is rare
?
a. A only b. B only c. AB d. O e. Both AB and O
Which statement best describes the plot in the accompanying figure?
a. The figure represents an endergonic reaction.
b. The figure represents a spontaneous reaction.
c. The products have more free energy than the reactants.
d. The reactants have more free energy than the products.
e. The reaction is endergonic, and in addition, the products have more free energy than the reactants.
Bryophytes tend to be high-growing plant species.
True or False?