Recognizing Alien Life Quiz

What is the primary challenge in recognizing alien life according to the text?

• Aliens will look exactly like humans.

• Aliens will be too far away to detect.

• Alien life may not fit our standard definitions of life.

• Aliens are likely to be hostile.

Tags

CCSS.RL.9-10.2

CCSS.RI. 9-10.2

CCSS.RI.8.2

CCSS.RL.8.2

CCSS.RL.11-12.2

What is the profession of scientists who search for life outside Earth?

• Geologists

• Astrobiologists

• Biologists

• Astronomers

According to the text, what is a common assumption about life on Earth?

• Life on Earth is silicon-based.

• Life on Earth is carbon-based.

• Life on Earth is always fast-paced.

• Life on Earth is always visible.

What did the Horta from Star Trek represent in the context of the text?

• A carbon-based life form

• A silicon-based life form

• A type of virus

• A fictional alien species

What is one of the criteria some scientists insist must be present for life?

• Ability to fly

• Active metabolism

• Ability to speak

• Presence of chlorophyll

What does Christoph Adami argue is the simplest form of life?

• Information that reproduces itself

• A single-celled organism

• A complex organism

• A virus

Tags

CCSS.RL.2.6

CCSS.RL.8.3

What is a potential issue with defining life based on cell size?

• It may only include plants.

• It may exclude larger organisms.

• It may exclude tiny microbes.

• It may only include viruses.

Tags

CCSS.RI.7.1

CCSS.RI.8.1

CCSS.RL.8.1

CCSS.RI.8.8

CCSS.RL.9-10.1

What is the role of ribosomes in cells according to the text?

• They provide energy.

• They build proteins.

• They store genetic information.

• They transport nutrients.

What does Steven Benner speculate about tiny cells?

• They are not capable of reproduction.

• They cannot exist.

• They might use RNA instead of proteins.

• They are always carbon-based.

What is the significance of desert varnish in the context of the text?

• It is a type of mineral.

• It is a type of plant.

• It may be created by unknown life forms.

• It is a type of rock.