IB Biology Topic 6.5 Neurons Day 1

Front

What is the function of the nucleus in a neuron?

Back

The nucleus contains the cell's genetic material and controls cellular activities, including the production of proteins necessary for neuron function.

Front

What are the products of anaerobic respiration in yeast?

Back

Ethanol and carbon dioxide.

Front

What role do voltage-gated calcium channels play in neurotransmitter release?

Back

They directly trigger the release of neurotransmitters into the synaptic cleft.

Front

What type of neuron perceives information about the environment?

Back

Sensory Neuron.

Front

What is the primary function of leukocytes?

Back

To digest pathogens and produce antigens.

Front

Define a dendrite.

Back

Dendrites are the branched extensions of a neuron that receive signals from other neurons.

Front

What is the role of the myelin sheath?

Back

The myelin sheath insulates axons and increases the speed of electrical impulses along the neuron.

Front

What is an action potential?

Back

An action potential is a rapid change in membrane potential that propagates along the axon, allowing for the transmission of signals.

Front

What is the difference between a motor neuron and a sensory neuron?

Back

Motor neurons transmit signals from the central nervous system to muscles, while sensory neurons carry signals from sensory receptors to the central nervous system.

Front

What is synaptic transmission?

Back

Synaptic transmission is the process by which neurotransmitters are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron.