Multiple Choice
Which of the following statements about REM sleep in infancy is true?
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5. Consciousness and Sleep
Sleep
Multiple Choice
Which of the following statements are true about the sleep cycle.
I. The sleep cycle refers to the 24-hour cycle of sleeping and waking.
II. On average, people go through 4-6 cycles per night.
III. The sleep cycle has two general phases.
A
I & II.
B
II & III.
C
I & III.
D
I, II, & III
Verified step by step guidance1
Step 1: Understand the concept of the sleep cycle. The sleep cycle is not a 24-hour cycle; it refers to the stages of sleep that repeat several times during a night's sleep.
Step 2: Evaluate statement I. The sleep cycle does not refer to the 24-hour cycle of sleeping and waking. This is a description of the circadian rhythm, not the sleep cycle.
Step 3: Evaluate statement II. On average, people do go through 4-6 sleep cycles per night, each lasting about 90 minutes.
Step 4: Evaluate statement III. The sleep cycle has two general phases: Non-REM (NREM) and REM (Rapid Eye Movement) sleep.
Step 5: Determine which statements are true based on the evaluations. Statements II and III are true, while statement I is false.
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