The Next Few Questions Refer to the Following Description

question 13

Multiple Choice

The next few questions refer to the following description.
Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. When within their hosts, the algae are referred to as zoochlorellae. In aquaria with light coming from only one side, P. bursaria gathers at the well-lit side, whereas other species of Paramecium gather at the opposite side. The zoochlorellae provide their hosts with glucose and oxygen, and P. bursaria provides its zoochlorellae with protection and motility. P. bursaria can lose its zoochlorellae in two ways: (1) if kept in darkness, the algae will die; and (2) if prey items (mostly bacteria) are absent from its habitat, P. bursaria will digest its zoochlorellae.
-Which term most accurately describes the nutritional mode of healthy P. bursaria?

• A) photoautotroph
• B) photoheterotroph
• C) chemoheterotroph
• D) chemoautotroph
• E) mixotroph

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Definitions:

Awaken

To rouse from sleep or to become alert and conscious after being asleep or less alert.

Non-rapid Eye Movement Sleep

The part of the sleep cycle that involves deep sleep stages, crucial for restorative rest.

Respiratory Rates

The number of breaths an individual takes per minute, an important vital sign in assessing respiratory function.

Baseline

A reference point or starting condition against which changes or advancements are measured.