A CO₂ Gradient Between the Inside and Outside of a Leaf

question 61

Multiple Choice

A CO₂ gradient between the inside and outside of a leaf is maintained during photosynthesis because

• A)energy is expended by the plant to maintain the CO₂ gradient.
• B)the CO₂ concentration outside of the leaf is always increasing.
• C)the CO₂ concentration in the mesophyll is constantly decreasing.
• D)the stomata close whenever more CO₂ is needed.

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Expenses incurred but not yet paid in cash or recorded.

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Treasury Stock

A corporation’s own stock that has been issued and subsequently reacquired from shareholders by the corporation but not retired.

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Transactions involving the purchase or sale of long-term assets and investments, reflected in the cash flow statement of a company.