Some hormones act by:
a. Increasing the synthesis of enzymes
b. Converting an inactive enzyme into an active enzyme
c. Affecting only specific target organs
d. All of these

검증된 단계별 안내

Step 1: Understand the role of hormones in the body. Hormones are chemical messengers that regulate various physiological processes by interacting with target cells.

Step 2: Analyze option (a): Increasing the synthesis of enzymes. Some hormones can stimulate cells to produce more enzymes by activating gene expression, leading to increased enzyme synthesis.

Step 3: Analyze option (b): Converting an inactive enzyme into an active enzyme. Certain hormones can activate enzymes already present in the cell by modifying them, such as through phosphorylation.

Step 4: Analyze option (c): Affecting only specific target organs. Hormones typically bind to receptors on specific target cells or organs, ensuring that their effects are localized and regulated.

Step 5: Conclude that since all these mechanisms are ways hormones act, the correct comprehensive answer is that hormones can act by all of these methods.

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Hormone Mechanisms of Action

Hormones influence cellular activity through various mechanisms, including increasing the synthesis of enzymes by stimulating gene expression, or activating existing enzymes by converting them from inactive to active forms. These mechanisms enable hormones to regulate metabolic processes efficiently.

Enzyme Activation and Synthesis

Hormones can either promote the production of new enzymes by enhancing protein synthesis or activate pre-existing enzymes through modification. This dual ability allows hormones to rapidly and specifically alter cellular functions in response to physiological needs.

Target Organ Specificity of Hormones

Hormones affect only specific target organs or cells that possess the appropriate receptors. This specificity ensures that hormonal signals produce precise physiological effects without widespread, non-specific actions throughout the body.

Some hormones act by:a. Increasing the synthesis of enzymesb. Converting an inactive enzyme into an active enzymec. Affecting only specific target organsd. All of these