Daily Quiz

Question 1:

The primary function of the first sentence is to:

A. provide a detailed list of the bodily functions controlled by the brain.
B. suggest that there are many things we still do not know about the brain.
C. explain how the brain creates dreams and other mental images.
D. acknowledge the seeming impossibility of the brain’s power.

Question 2:

According to the passage, the speed at which spikes travel was an evolutionary advantage because:

A. it allowed the brain to make connections between seemingly unrelated events.
B. it allowed organisms to escape from harmful situations.
C. it caused the human brain to grow in complexity and size.
D. it permitted the development of rational thinking.

Question 3:

In paragraph 2 (lines 6-18), the author most likely compares the brain to a cantaloupe in order to:

A. suggest that objects similar to the brain often appear in nature.
B. draw a parallel between a cantaloupe’s texture and the brain’s texture.
C. point out the difference between the brain’s abilities and those of a cantaloupe.
D. emphasize the paradox between the brain’s abilities and its size.

Question 4:

The passage states that dendrites’ primary function is to:

A. provide essential support to the body’s most fundamental systems.
B. carry electrical signals down membranes.
C. combine information from various sources.
D. trigger chemical signals to neurons.

Question 5:

It can be reasonably inferred from the passage that a “message” sent from a person’s brain to his or her arm would be carried by:

A. a dendrite.
B. an axon.
C. a renal cell.
D. a glial cell.

Question 6:

According to the passage, the brain expends the most amount of energy:

A. maintaining the correct balance of charges between neurons and their membranes.
B. passing electrical signals from neuron to neuron.
C. alerting the body to potentially dangerous situations.
D. sending messages between axons and dendrites.

Question 7:

According to the passage, the brain contains cells known as:

I. glial cells

II. neurons

III. dendrites

A. I only
B. II only
C. I and II only
D. I, II, and III

Question 8:

The passage states that the longest axons in nature are found in:

A. whales.
B. shrews.
C. human beings.
D. elephants.

Question 9:

The passage indicates that the membrane surrounding each neuron contains:

A. glial cells.
B. an excess of potassium ions.
C. voltage equivalent to that of a nine-volt battery.
D. an uneven distribution of electrical charges.

Question 10:

According to the passage, the appearance of spikes:

A. does not vary across species.
B. is distinctive in humans.
C. changes according to stress levels.
D. often resembles that of axons.

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