The Following Questions Refer to the Cartoon Below

question 23

Multiple Choice

The following questions refer to the cartoon below.

MPI/Getty Images
"The Only Way to Handle It",1921
-The influx of immigrants in the early 20^th century

• A) came mostly from southern and eastern Europe.
• B) helped to strengthen the nation's labor unions.
• C) strengthened the Democratic coalition.
• D) tended to pursue agricultural jobs on the frontier .

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Definitions:

Synaptic Cleft

The small gap between neurons at a synapse, through which neurotransmitters are released to transmit nerve impulses.

Presynaptic Terminal

The end point of a neuron that communicates with another neuron or muscle cell across a synapse, releasing neurotransmitters to transmit nerve impulses.

Sarcolemma

The thin, plasma membrane surrounding a muscle fiber, crucial for muscle contraction and interaction.

Myosin Myofilaments

Thick filaments in muscle cells composed of the protein myosin, playing a central role in muscle contraction by interacting with actin filaments.