Ch 1: Biology in the 21st Century Pt. 1

Scientists

________ use observations and data to form hypotheses.

Evolution

________ can occur through natural selection and adaptation.

Scientific Inquiry

________ is based on curiosity and skepticism, and also requires evidence.

Science

________ is a human process of trying to understand the world around us.

Constants

The conditions in the experiment that dont change.

Negative feedback

causes a response that should return the system to its original state when a change in a system occurs.

Natural Selection

when organisms with a certain genetic trait survive and reproduce better than organisms without the trait.

Parts of living things

________ are structured to work in a way that is most beneficial.

dependent variables

Experiments: a process where scientists study factors (independent and ________) to find cause- and- effect relationships.

Homeostasis

The maintenance of constant internal conditions in an organism.

Adaptations

________ occur through MANY generations as traits are passed down.

Theory

a proposed explanation for observations and results supported by evidence.

Skepticism

uses critical thinking to analyze results.

Metabolism

All of the chemical processes that build up or break down materials.

Peer Review

________ is when results are evaluated by other scientists.

Observation

using senses and tools to study the world.

Biology

The scientific study of all forms of life.

DNA

The genetic material found in all organisms.

Organisms

________ pass down genetic material when they reproduce.

Biosphere

All living things and all the places they are found on earth.

chemical energy

Living things use ________ to survive.

Ecosystem

A physical environment with different species that interact with other species and nonliving things.

Hypothesis

A proposed answer for a scientific question.

Quantitative data

can be measured or counted to report how something happens.

Physical reactions

________ called stimuli include light, temperature, and touch.

System

An organized group of related parts that form a whole.

traits

Shared ________ in organisms are a result of common evolutionary descent.

Biodiversity

The variety of life across the biosphere.

Greater biodiversity

________ is found near the equator because more living things can live in warmer climates than in cold climates.

independent variable

This is what is measured and observed during an experiment to see the impacts of the ________.

Multicellular organisms

________ reproduce from two parents.

Adaptation

An inherited trait that gives an advantage to organisms with that trait.

Evolution

The change of genetic material in living things over time.

Natural selection

________ can lead to the evolution of new species.

Homeostasis

________ is usually maintained with Negative feedback.

Observation

________ is important for categorizing and studying organisms.

Organisms

________ develop according to instructions carried by DNA and RNA.

Chemical energy

________ is received through absorbing sunlight or eating other organisms.

Independent variable

A factor that is changed in an experiment.

Biosphere

All living things and all the places they are found on earth

Biodiversity

The variety of life across the biosphere

Species

A type of living thing that can reproduce by breeding among themselves

Biology

The scientific study of all forms of life

Organism

Any individual living thing

Cells

The basic unit of life

Metabolism

All of the chemical processes that build up or break down materials

DNA

The genetic material found in all organisms

System

An organized group of related parts that form a whole

Ecosystem

A physical environment with different species that interact with other species and nonliving things

Homeostasis

The maintenance of constant internal conditions in an organism

Evolution

The change of genetic material in living things over time

Adaptation

An inherited trait that gives an advantage to organisms with that trait

Observation

using senses and tools to study the world

Data

Information that is collected through observation

Hypothesis

A proposed answer for a scientific question

Experiments

a process where scientists study factors (independent and dependent variables) to find cause-and-effect relationships

Independent variable

A factor that is changed in an experiment

Dependent variable

A factor that changes based on the independent variable

Constants

The conditions in the experiment that dont change

Theory

a proposed explanation for observations and results supported by evidence