If All That Is Required to Drive a Chemical Reaction

question 156

Multiple Choice

If all that is required to drive a chemical reaction is heat, why can't we speed up biological chemical reactions by heating the cell?

• A) High energy costs are prohibitive for the whole cell.
• B) Excess heat would indiscriminately speed up all chemical reactions, including desirable and undesirable reactions, as well as denature the biological catalysts (enzymes) involved.
• C) Organisms that have self-regulated body temperature, such as mammals, already heat their chemical reactions and do not need external heat sources.
• D) Excess heat would slow down the rate of product formation for many chemical reactions.
• E) Evenly heating the entire cell is technically difficult, mainly because of high concentrations of hydrophobic molecules in the phospholipid bilayer.

Prepare and understand entries related to the reacquisition and sale of treasury stocks.

Construct the stockholders' equity section of the balance sheet considering different components.

Calculate and explain the effects of buying back stock on the market price per share.

Journalize various stock-related transactions within a fiscal year, including stock splits, stock dividends, and sales of stock.

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Definitions:

Common Stock

Equity ownership in a corporation, entitling shareholders to a share of the company’s profits through dividends and voting rights.

Long-term Investment

Investments made to be held for several years or more, typically in bonds, stocks, or real estate.

Financing Activities

Transactions involving the flow of cash between a company and its owners or creditors, typically relating to equity and long-term debt.

Treasury Stock

Shares that were issued and subsequently bought back by the issuing company, reducing the amount of outstanding stock on the open market.