Chapter one biology

Where do plans, bacteria, and algae get there energy from

It comes from recently living organisms

Define homeostasis

It is the tendency toward a relativity stable equilibrium between independent elements

Why does it make sense for a scientist to test just one variable at a time in an experiment

It makes sense because than you can know what caused the thing to go wrong in the expierment instead of testing more than one which would make it hard to happen in the expierment

What is the biosphere

Biosphere is the living planet

_________: information gathered during experiments

Data

_________ are not completely right or wrong

Hypotheses

Manipulated variables are also known as what

Independent variable

_________: is an idea based on what is already known

Inference

What is a cell

A cell is the basic init of all forms of life

What is a hypothesis

A hypothesis is a scientific explination for a set of observations that can be tested in ways that support and reject it

Describe asexual reproduction

A single organism produces offsprings identical to itself

How can a graph of data be more informative than a table of the same data

A table can be more informative than a table because a graph makes it very easy to see trends hen you look at a table it makes it harder to read and find trends

What is a theory

A theory ties a hypotheses together. Theory is used both in science and everyday. Theory in dailey life is very different from its meaning in science

A unicellular organism is made up of how many cells

A unicellular organism is made up of one cell

If an organism has a singe parent it is _____________ reproduction

Asexual reproduction

What is bias and why should scientist recognize it in there selves

Bias is your option on something. Scientist should recognize it because science is based on pure facts and bias is your option on something

Define biology

Biology is the study of life

What are the big ideas in biology ( list them )

Cellular basis of life, information and heredity, matter and energy growth, development and reproduction, homeostasis evolution, structure and function unity, diversity of life, interdependence in nature and science is a at of knowing

Scientist still try to ________ as many variables as possible

Control

______ groups are exposed to the same conditions conditions as the experimental group except for one independent variable

Control

Experiments are divided into _____ and ________ groups

Control and experimental

What are the scientific attitudes a scientist should have

Curiosity, skepticism, creativity and open mindedness

Scientists use _______ to support or refute the hypothesis change the hypothesis or to draw a valid conclusion

Data

__________ variable changes in response to the independent variable it is also variable it is also known as the responding variable

Dependent

Responding variables are also known as what

Dependent variable

Dependent variables are what

Dependent variables change in response to the independent variables it is also known as the responding variable

Ethics , beliefs about what is wright or wrong can ________ if an experiment is possible or not

Determine

Testing a hypothesis involves an _________ that keeps tracts of variables

Experiment

Controlled experiment is a ___________ in which only _____ variable is changed all other variables should remain unchanged

Experiment, one

The goals of science are to give ______________ for ______________ events to understand ______________ and to make _________________

Explanations, natural, patterns, predictions

How does an observation about a object differ from a inference about that object

How it differs is observations are the act of noticeing and describing what is happening in an orderly way and inference is an idea based on what is already known

Inferences can lead to a __________

Hypothesis

____________: a scientific explanation for a set of observations that can be tested

Hypothesis

The measuring system is based on measurements of what

Increments of 10

The _______ variable is deliberately changed it is also called a manipulated variable

Independent

What are the eight characteristics of life

Living things are based on a universal genetic code, living things grow and develop, living things maintain a stable internal environment, living things respond to there environment,living things reproduce, living things obtain and use material and energy, living things are made up cells, all living things evolve

What are the eight characteristics of life

Living things are based on genetic code, living things grow and devolp, living things respond to their enviroment, living things reproduce, living things maintain a stable enviroment, living things obtain and use material and energy, living things are amde up of cells and taken as a group living things evolve

Define metabolism

Metabolism is the combinations of chemical reactions through which an organism builds up or breaks down

Describe sexual reproduction

Most plants and animals use sexual reproduction. Two parents unite to form the first cell of a new organism

Sometimes _________ can be used to test the hypothesis

Observations

___________: the act of noticing and describing what is happening in an orderly way

Observations

Why do offsprings resemble their parents

Offsprings resemble there parents because they have DNA from both there parents put together in them

It is not always ______ to test a hypothesis with an experiment

Possible

Science is a ______________

Process

_______: describes thighs that cannot be counted

Qualitive

_________: numbers found by counting or measuring

Quantitative

______________ is always a way of changing

Science

What is science

Science is an organized way of gathering and analyzing evidence about the natural world

Why aren't theories considered absolute truths

Science is constantly evolving and new discoveries could confrount a theory a theory and claim it correct or incorrect. The information in theories is not concreate because it could be resised

New ideas come from ____________, _______________ and new __________

Scientific attitudes ,particle problems and technology

What are the two types of reproduction

Sexual and asexual are the two types of reproduction

If a organism has two different parents it is ______________ reproduction

Sexual reproduction

A life cycle is from when to when

Starts when out are born and ends when you die

Define stimulus

Stimulus is a signal to which an organism responds

Why are scientific theories useful

Theories are useful because they enable scientests to make accurate pedictions on poential new situations

Distinguish between an experimental group and a control group

The difference between a experimental group and a control group is an experimental group is the group in an experiment that changes the variable being tested, a controlled group is a group that does not receive treatment by the researchers

Independent variables are what

The independent variable is deliberately changed it is also called manipulated variables

What measuring system do scientist use

The metric system

The smallest unit of life in a being is a what

The smallest unit in a being is a cell

List the steps of scientific method

The steps of scientifis method are define the poblem, form a hypothesis, reshearch and collect data, experiment and conclusion

What steps are involved in drawing a conclusion

The steps that are involved in drawing a conclusion are gather all information one place decide if the data are acceptable quality and if the realibity and validaty are acceptable you can go on to decide about each hypothesis

Directions for inheritance are carried on what

They are carried on either the DNA or genes

How do organisms respond to their environment

They respond to their environment through adaptation

What are the goals of science

To give explinations for mature events to understand patterns and to mae perdictions

There are ____ types of data

Two

_______: things that can change

Variables

What are variables

Variables are things that can change

Explain why you cannot draw a conclusion about the effect of one variable in an investigation when the other key variables are not controlled

You cannot dra a conclusion about the effect of one variable in an investigation because you wont know wwhat causes change

Why is it misleading to describe science as a collection of facts

You do more than collect facts and you have to experiments and all that stuff to get answers