What is the function of a nerve cell in a multicellular organism? (1 point)
Responses
make and move protein
make and move protein
carry and transmit signals
carry and transmit signals
store and distribute oxygen
store and distribute oxygen
produce and manage movement
carry and transmit signals
How are red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism? (1 point)
Responses
They are flexible because they lack a plasma membrane.
They are flexible because they lack a plasma membrane.
They are small because they lack a nucleus.
They are small because they lack a nucleus.
They are long and thin with a tail-like end.
They are long and thin with a tail-like end.
They are small because their organelles are smaller than those of other cells.
They are small because they lack a nucleus.
How do dendrites help the function of nerve cells? (1 point)
Responses
They help the neuron block messages from the dendrites of another neuron.
They help the neuron block messages from the dendrites of another neuron.
They help the neuron receive messages from the dendrites of another neuron.
They help the neuron receive messages from the dendrites of another neuron.
They help the neuron receive messages from the axon of another neuron.
They help the neuron receive messages from the axon of another neuron.
They help the neuron block messages from the axon of another neuron.
They help the neuron receive messages from the dendrites of another neuron.
How might a red blood cell work with a neuron to support the function of a multicellular organism? (1 point)
Responses
A red blood cell may carry oxygen to the nucleus of a neuron.
A red blood cell may carry oxygen to the nucleus of a neuron.
A neuron may produce more red blood cells.
A neuron may produce more red blood cells.
A neuron may signal when and where oxygen is needed.
A neuron may signal when and where oxygen is needed.
How are red blood cells and neurons different? (1 point)
Responses
Neurons need oxygen, but red blood cells do not.
Neurons need oxygen, but red blood cells do not.
Neurons contain DNA, but red blood cells do not.
Neurons contain DNA, but red blood cells do not.
Neurons lack organelles, but red blood cells have organelles.
Neurons lack organelles, but red blood cells have organelles.
Neurons are all the same size, but red blood cells are different sizes.
Neurons lack organelles, but red blood cells have organelles.
The correct response is: carry and transmit signals.
Explanation: In a multicellular organism, such as humans, nerve cells, also known as neurons, play a crucial role in transmitting signals and communication within the body. They are specialized cells that are responsible for receiving, processing, and transmitting information through electrical and chemical signals. Nerve cells have a unique structure with long extensions called dendrites and axons, which allow them to receive and transmit signals, respectively. These signals can be sensory signals from external stimuli or signals for controlling movement, coordinating body functions, sending messages between the brain and other parts of the body, and facilitating communication in the nervous system. Additionally, nerve cells can also form complex networks and connections, allowing for higher cognitive functions, memory, and thought processes.