By 2012 the Number of Students in Colleges and Universities

question 40

True/False

By 2012 the number of students in colleges and universities had increased more than eight times, to more than 60 million.

Understand the importance of biodiversity in ecological stability and the concept of ecological niches.

Identify the types of relationships species can have with one another and their environmental implications.

Understand different ecological relationships and their impact on ecosystems.

Recognize the various defense mechanisms of prey species.

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Definitions:

Presynaptic Membrane

The membrane of a nerve cell terminal that is proximal to the synaptic cleft and releases neurotransmitters in response to an action potential.

Action Potential

A rapid, temporary change in the electrical charge across a cell membrane, allowing nerve cells to transmit signals.

Gated Channels

Protein channels in cell membranes that open or close in response to specific stimuli, regulating the flow of ions or molecules.

Depolarization

The process in which the electrical charge of a cell membrane becomes less negative, leading to the activation of electrical activities like nerve impulses.