input: OPTIONS:
- pulses
- proteins
- information
- signals Now, answer this question: Answer the following question given this paragraph: Nerve Impulse Transmission within a Neuron For the nervous system to function, neurons must be able to send and receive signals. These signals are possible because each neuron has a charged cellular membrane (a voltage difference between the inside and the outside), and the charge of this membrane can change in response to neurotransmitter molecules released from other neurons and environmental stimuli. To understand how neurons communicate, one must first understand the basis of the baseline or 'resting' membrane charge. Neuronal Charged Membranes The lipid bilayer membrane that surrounds a neuron is impermeable to charged molecules or ions. To enter or exit the neuron, ions must pass through special proteins called ion channels that span the membrane. Ion channels have different configurations: open, closed, and inactive, as illustrated in Figure 35.9. Some ion channels need to be activated in order to open and allow ions to pass into or out of the cell. These ion channels are sensitive to the environment and can change their shape accordingly. Ion channels that change their structure in response to voltage changes are called voltage-gated ion channels. Voltage-gated ion channels regulate the relative concentrations of different ions inside and outside the cell. The difference in total charge between the inside and outside of the cell is called the membrane potential. Q: For the nervous system to function, neurons must be able to send and receive what? A:
A:
output: signals

Answer the following question given this paragraph: Q: What parts of the cell does cell differentiation involve changes in? A:

OPTIONS:
- cystine and cell wall
- endoderm and epidermis
- cell membrane and nucleus
- cytoplasm and cell wall

Answer: cytoplasm and cell wall

Problem: OPTIONS:
- fruits
- legumes
- algae
- mushrooms
Q: Answer the following question given this paragraph: Mushrooms are fungi that are eaten by people all over the globe. Q: Which fungi eaten by people all over the world? A:
Answer: mushrooms

Problem:OPTIONS:
- the mesosphere
- the ionosphere
- the lithosphere
- the atmosphere

Answer the following question given this paragraph: All weather takes place in the atmosphere. Nearly all of it in the lower atmosphere. Weather refers to the conditions of the atmosphere at a given time and place. Climate is the average of weather over a long time. Q: Nearly all weather occurs in the lower part of what? A:
****
A: the atmosphere

Answer the following question given this paragraph: An incandescent light bulb produces visible light by incandescence. The bulb contains a thin wire filament made of tungsten. When electric current passes through the filament, it gets extremely hot and glows. You can learn more about incandescent light bulbs at the URL below. Q: What kind of light bulb contains a thin wire filament made of tungsten that gets hot and glows? A:
OPTIONS:
- black light
- LED
- fluorescent
- incandescent
incandescent

Answer the following question given this paragraph: But mining for gold is a slow, dirty, and dangerous process. Not everyone owns a gold mine in both the ancient Egyptian society and during the Roman Empire, the gold mines were the property of the state, not an individual or group. So there were few ways for most people to legally get any gold for themselves. Q: In ancient egypt gold mines were the property of what? A:
OPTIONS:
- prospectors
- city
- people
- state

Answer:
state