Characteristics of Life

Question 1

All living things are?

Answer 1

Organized

Question 2

What is the simplest level at which life may exist?

Answer 2

Cell

Question 3

Are all cells alike?

Answer 3

No

Question 4

All cells perform various jobs for?

Answer 4

Functions

Question 5

What surrounds a cell and separates it from its environment?

Answer 5

Plasma membrane

Question 6

What is the difference between unicellular and multicellular organisms?

Answer 6

Unicellular = 1
Multicellular = 2

Question 7

Give an example of a multicellular organism and an example of a unicellular organism.

Answer 7

Multicellular: dogs, trees
Unicellular: amoebas, paramecia

Question 8

Multicellular organisms can be organized into what other levels?

Answer 8

Tissue, organs, and systems.

Question 9

Define reproduction.

Answer 9

The production of off spring.

Question 10

What would happen if all individuals in a species were not able to have babies?

Answer 10

Would become extinct.

Question 11

Reproduction is NOT essential for the survival of an individual ____ but is essential for the survival of ____.

Answer 11

Organism ; organism species

Question 12

What is meant by extinction?

Answer 12

End to that species’ existence on earth.

Question 13

Name and define the two basic kinds of reproduction.

Answer 13

Sexual- requires that two cells (sperm and egg) unite to produce the first cell of the new organism.

Asexual- a single organism can reproduce without the aid of another.

Question 14

How do all organisms begin life?

Answer 14

As a single cell.

Question 15

What is the difference between growth and development?

Answer 15

Growth- results in an increase in the amount of living material and formation of new structures.

Development- all of the changes that take place during the life of an organism.

Question 16

Do unicellular organisms grow? Do unicellular organisms develop?

Answer 16

Yes

Question 17

Do multicellular organisms grow? Do multicellular organisms develop?

Answer 17

Yes

Question 18

How is the growth of a living thing different from the growth of a nonliving thing?

Answer 18

Does not contain cells.

Question 19

Define energy.

Answer 19

The ability to make things change.

Question 20

Why is energy important to a living organism?

Answer 20

It provides organisms with the ability to maintain balance, grow, reproduce, and carry out other life functions.

Question 21

What is the difference between an autotroph and a heterotroph?

Answer 21

Autotroph- organisms that get energy from the food they eat.

Heterotroph- organisms that use to make their own food using energy from the sun.

Question 22

What are some environmental factors (stimuli) that organisms respond to?

Answer 22

Air, water, weather and temperature.

Question 23

Organisms must also respond to ____ factors in order to stay healthy and survive.

Answer 23

Internal

Question 24

What are two internal factors that organisms respond to?

Answer 24

Nutrients and body temperature.

Question 25

If light is applied to a human eye, how does it respond?

Answer 25

It causes the eye to squint.

Question 26

Describe homeostasis.

Answer 26

Regulations of an organisms internal environment to maintain conditions suitable for life.

Question 27

What is biology?

Answer 27

The study of organisms.

Question 28

What are living things called?

Answer 28

Organisms

Question 29

List the 8 characteristics of life.

Answer 29

1. DNA
2. Grow & Develop
3. Respond to environment
4. Cells
5. Evolve
6. Obtain & use energy
7. Maintain a stable environment (homeostasis)
8. Reproduce

Question 30

The scientific term for living is?

Answer 30

Organism