Honors Biology - Unit 1 Test: Chapter 1

Why are ideas in science constantly changing?

scientists are constantly testing, debating, and revising scientific explanations

Science deals only with the ___ world.

natural

What are observations?

information gathered by your senses

What are inferences?

logical interpretations based on what is already known

What is a hypothesis?

a tentative explanation that can be tested

What is an independent variable?

variable that is manipulated

What is a dependent variable?

variable that is measured

What is a constant variable?

variable that stays the same

What is qualitative data?

data that describes characteristics that can't be measured

What is quantitative data?

data that involves counting or measuring

What is a theory?

a well-tested explanation for a range of phenomena

What is bias?

showing preference towards toward a particular viewpoint.

Living things are made of self-contained units called...

cells

Which type of reproduction involves two parents?

sexual reproduction

Which type of reproduction involves only one parent?

asexual reproduction

The directions for inheritance are carried on what molecule?

DNA

What are the characteristics of life?

Made of cells, reproduce, have DNA, grow and develop, use materials and energy (metabolism), respond to their environment, maintain a stable internal environment, grow and adapt over time

What is metabolism?

the combination of all chemical reactions of life processes

What is a stimulus?

a signal to which an organism responds

What is homeostasis?

maintaining a stable internal environment

What is evolution?

a group of organism's ability to change over time