Serja Has Just Started a New Job and Is Highly

question 15

Multiple Choice

Serja has just started a new job and is highly anxious. Her psychologist friend, Frieda, tells Serja that to cope with the stress she should say to herself,

• A)"I have no control over this situation, so I'm not going to worry about it."
• B)"I can throw myself into this job full-time since I have very few friends."
• C)"This job is a challenge that I know I can rise to!"
• D)"If I fail at this job, it won't be the first time."

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Definitions:

Primitive Streak

Dynamic, constantly changing structure that forms at the midline of the blastodisc in birds, mammals, and some other vertebrates. It is active in gastrulation as cells migrate to a narrow furrow at its center, the primitive groove, and sink into the interior of the embryo. The anterior end of the primitive streak is Hensen’s node.

Epiblast

An early embryo layer from which all the three primary germ layers develop during gastrulation in the formation of a vertebrate body.

Notochord

A flexible rod-like structure in the early stages of embryos in all chordates, providing skeletal support.

Blastocoel

The fluid-filled cavity of a blastula.