Morphology: tract, chrono, gen, astr

The scientist needed to _______________ the DNA sequence to study the genes more closely.

• extract

• paint

• ignore

• inflate

The lion’s claws seemed to _______________ as he played gently with the cubs.

• retract

• sharpen

• grow

• harden

The disease was considered _______________ because it had persisted for several months.

• chronic

• acute

• mild

• temporary

_______________ was my mom’s favorite class in college because she’s always been interested in the planets, as well as in far-off galaxies.

• Astronomy

• Biology

• History

• Economics

The athlete’s injury caused his performance to _______________, as he could no longer compete at the same level.

• degenerate

• improve

• stabilize

• excel

Which word means "to pull back"?

• Extract

• Tractor

• Retract

• Subtract

What is the study of stars and space called?

• Morphology

• Astronomy

• Chronology

• Genealogy

Which word refers to the origin or birth of something?

• Genesis

• Chronograph

• Synchronize

• Distract

What is the process of making something happen at the same time?

• Degenerate

• Synchronize

• Contract

• Subtract

Which word describes a person native to a particular region?

• Astronaut

• Indigenous

• Genetic

• Chronic