CH1 - Principles of Biology

Question 1

Living things consist of _______

Answer 1

chemical elements (e.g. carbon, hydrogen, and oxygen)
living organisms consist of cells (unicellular or multicellular).

Question 2

Living organisms can be _______

Answer 2

microscopic (bacteria)
macroscopic (humans)

Question 3

What is the biological organization in order

Answer 3

atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms

Question 4

What is an atom?

Answer 4

the smallest and a fundamental unit of matter.

Question 5

What forms a molecule?

Answer 5

an atom

Question 6

Macromolecules form _______

Answer 6

organelles

Question 7

Organelles create _______

Answer 7

a cell

Question 8

Tissues are made of _______

Answer 8

cells

Question 9

Organs are made of _______

Answer 9

tissues

Question 10

Organ systems make up _______

Answer 10

organisms

Question 10

Organs and tissues make up _______

Answer 10

organ systems

Question 11

A population is _______

Answer 11

a group of individuals of the same species living in an area.

Question 12

A community is ______

Answer 12

different populations living together in an area.

Question 12

An ecosystem is _______

Answer 12

a community and its physical environment.

Question 13

A biosphere is _______

Answer 13

the part of the earth and its atmosphere in which living organisms exist.

Question 14

Metabolism is _______

Answer 14

is all the chemical reactions that occur in a cell or in an organism.

Question 14

Energy processing is when _______

Answer 14

all organisms use energy for their
metabolic activities.

Question 15

Order of classification

Answer 15

species, genus, family, order, class, phylum, kingdom, and domain.

Question 15

Homeostasis is the _______

Answer 15

maintenance of internal conditions within certain boundaries.

Question 16

The three domain classification are _______

Answer 16

bacteria, archaea, and eukarya.

Question 16

The scientific method includes _______

Answer 16

observation, a question, hypothesis, experiment, and result

Question 17

Control is _______

Answer 17

what you are not performing experiments on, or not changing.

Question 17

A scientific theory is _______

Answer 17

explanation based on facts that have been repeatedly confirmed through observation and experiment.

Question 18

A dependent variable is _______

Answer 18

is what you measure or observe.

Question 18

A variable is _______

Answer 18

is any factor, trait, or condition that is differing in an experiment.

Question 18

An independent variable is _______

Answer 18

is changed by the scientist.