1.1.3 Structure of Life

​Annotate on the image to share which animal you're feeling like today!

Structure of Life

1.1.3

Take the next 5 minutes to complete your knowledge check.

Knowledge Check

Objectives

Students can:

• distinguish between living and nonliving things

• identify the three domains of life

• describe the characteristics of living things

Vocabulary

Prerequisite Vocab

New Vocab

• biology

• homeostasis

• response

• archaea

• bacteria

• cell

• eukaryote

• prokaryote

the study of life

​​Biology

a steady state

homeostasis

​an organism's reaction

Response

Match

Match each word to its definition.

• archaea

• bacteria

• cell

• eukaryote

• prokaryote

live in extreme environments

lack a nucleus and live almost anywhere

basic unit of living things

organism with cells that have a nucleus

single-celled organism with no nucleus

• 
  

  live in extreme environments

• lack a nucleus and live almost anywhere

• basic unit of living things

• organism with cells that have a nucleus

• single-celled organism with no nucleus

Take a look at this image. What in this picture is a living thing and what is a nonliving thing?

​

Living or Nonliving?

What Makes something Living?

Cells

Cells make up every living thing. All living things are made of cells while nonliving things are not. Cells are the basic building blocks of life. Some organisms are only a single cell and others are made of hundreds of thousands of cells.

Multiple Choice

Which statement correctly compares living and nonliving things?

• All living and nonliving things are made of cells.

• 
  Only living things are made of cells.

• Only nonliving things are made of cells.

• All living and some nonliving things are made of cells.

Biology is the study of life. Biologists categorize living things based on the number and types of cells those organisms contain.

Biology

Domains of Life

• Archaea

• Bacteria

• Eukarya

Archaea

Bacteria

Eukarya

• Single-celled prokaryotes

• Does not contain a nucleus

• Can survive in extreme environments

• Single or multi-celled eukaryotes

• Does contain a nucleus

• Includes plants, fungi, animals, and protists

• Single-celled prokaryotes

• Does not contain a nucleus

• Break down organic matter, help digest food, and cause diseases

Multiple Choice

What do Archaea, Bacteria, and Eukarya all have in common?

• They are all multicelled organisms.

• They are all types of animals.

• 
  They are all domains of life.

• They are all single-celled organisms.

Eukaryotic

Prokaryotic

Prokaryotic vs. eukaryotic

• do not have a nucleus

• simple, single-celled organisms

• represent the first and most basic type of organism

• have a nucleus

• can be single-celled or multicelled organisms

• humans, plants, fungi, and protists are eukaryotes

Categorize

Options (7)

no nucleus

only single-celled

single-celled or multicelled

have a nucleus

plants

bacteria

contain DNA

Organize these options into the right categories. Decide whether each word or phrase corresponds to prokaryotes, eukaryotes, or both.

Prokaryote

Eukaryote

Both prokaryote and eukaryote

Allow organisms to perform everyday functions.

Cells

The ability to regulate the body. An example of this is body temperature.

Homeostasis

Allows living things to perform actions.

​​Energy

For most organisms, this growth looks like an increase in size or the appearance of new features.

Growth

​Characteristics of Living Things

The ability for a living organism to create offspring.

​​Reproduction

An organism's reaction to changes in the environment.

Response

Large-scale changes within the population of organisms

Adaptation

Categorize

Options (4)

cardinals have developed large, strong beaks for crushing seeds

you eat breakfast to start your day

a sea turtle lays eggs on a beach

a rabbit runs from you while you are hiking through the woods

Match the description of a living thing with the characteristic of life being demonstrated.

Adaptation

Energy

Reproduction

Response