Unit 8 Quiz

Which statement describes evolution?

• change in biodiversity across Earth’s surface

• relationship between organisms’ structure and function

• change in the genetic makeup of a population over time

• beneficial inherited trait that is passed to future generations

The theory that landforms on Earth’s surface, such as mountains, waterfalls, and canyons, were created by sudden natural catastrophes is known as the theory of catastrophism. Why was it an important theory to evolutionary thinkers?

• The explanation relied solely on biblical interpretation.

• The explanation showed a uniform rate of change on Earth.

• The explanation relied on scientific evidence from the fossil record that showed abrupt changes in species.

• The explanation showed that the same natural forces that changed Earth’s surface and its organisms in the past still operate today.

What is the name given for genetic changes in living things over time?

• Evolution

• Adaptation

• Homeostasis

• Negative feedback

Scientists believe that all eukaryotes share a common ancestry because the nucleotides that make up all eukaryotic DNA are __________.

• free

• ancient

• complex

• the same

A mutation in the homeobox (Hox) genes of an organism could result in __________.

• changes in the body plan of the organism

• an increase in random mutations over time

• changes to the organism’s shared common ancestor

• a reduction in diversity of body types of future organisms

In the sunscreen lab when we placed a bead in a bag without any sunscreen it would be called…

• Control

• Constant

• Independent Variable

• Dependent Variable

Protein sequences in one organism that resemble those of another suggest a __________.

• coincidence

• shared ancestry

• great number of mutations

• lack of evolutionary relationship

“The job of sunscreen is it protects the cells from UV radiation.” This is an example of a…

• Hypothesis

• Prediction

• Experiment

• Control

A statement that explains or provides a mechanism for an observation in nature is a…

• theory

• law

• fact

• opinion