Question at position 44 A hormone is an example of which type of cell cycle signal?endogenousexogenous

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BlackTom AI · Accepted Answer

The question asks you to classify a hormone as a type of cell cycle signal, choosing between endogenous and exogenous.
Option 1: endogenous. Hormones are produced within the organism and act as internal signaling molecules that regulate cell cycles from within the body, fitting the definition of endogenous signals. This aligns with how cells respond to internal chemical cues during growth and division.
Option 2: exogenous. Exogenous signals come from outside the organism or from external sources, such as drugs, environmental factors, or signals from another organism. A hormone produced by the organism itself is not an external cue, so this option mislabels the source of the signal.
In distinguishing endogenous versus exogenous signals, consider the origin of the signal: internal production versus external introduction. Since a hormone is synthesized internally by endocrine tissues and travels to target cells to influence their cycle, the internal origin is the key criterion here.
Therefore, understanding hormones as internal regulators of the cell cycle supports identifying endogenous signals, while exogenous would be reserved for externally derived signals that affect cells.

Question at position 44 A hormone is an example of which type of cell cycle signal?endogenousexogenous

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Question at position 44 A hormone is an example of which type of cell cycle signal?endogenousexogenous

查看解析

登录即可查看完整答案

类似问题

Which of the following is NOT an example of a receptor tyrosine kinase?[Fill in the blank]

G protein receptor is a

Which of the following will be affected by a compound that gets rid of ATP?

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Insulin is a Blank ______ hormone and thus triggers a cellular response by Blank ______.

Insulin binds to specific receptors on the plasma membranes of its target cells. This binding triggers pathways that influence transport proteins and intracellular enzymes of the target cell.

Question at position 48 Which signaling mechanism uses neurotransmitters to communicate between a neuron and a target cell at a short range?Autocrine signalingParacrine signalingSynaptic signalingEndocrine signaling

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希望你的学习变得更简单

Insulin is a Blank hormone and thus triggers a cellular response by Blank .