Active Transport Makes It Possible for Cells to

question 54

Multiple Choice

Active transport makes it possible for cells to

• A)take up nutrients from the environment against concentrations gradients.
• B)transport out secretory products and waste material against concentration gradients.
• C)maintain nonequilibrium intracellular concentrations of ions such as Na⁺,K⁺,Ca2⁺,and H⁺.
• D)establish an electrical potential across the membrane.
• E)All of the above are correct.

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Definitions:

Hypothalamus Axons

Axons originating from the hypothalamus, involved in functions like temperature regulation, hunger, and emotional responses.

Postsynaptic Membrane

The membrane of the neuron that receives and responds to neurotransmitters from another neuron at a synapse.

Peptides

Chains of amino acids that are shorter than proteins, which play key roles in biological functions and act as neurotransmitters, hormones, and catalysts.

Frontal Lobes

The regions of the brain located at the front of each cerebral hemisphere, responsible for decision making, problem solving, and controlling behavior.