1. Review - What are the themes in biology that come up again and again

1. Review- What are the themes in biology that come up again and again

Predict- Suppose you discover a new organism. What would you expect to see if you studied it under a microscope

2. Review- At what levels do biologists study life Classify- A researcher studies why frogs are

disappearing in the wild. What field of biology does the research fall

3. Practice- In an experiment, you need 250 grams of potting soil for each of 10 plant samples. How many kilograms of soil in total do you need?

SCIENCE OF BIOLOGY1.3 Studying Life

• Think about important news stories you’ve heard. Bird flu spreads around the world, killing birds and threatening a human epidemic. Users of certain illegal drugs experience permanent damage to their brains and nervous systems. Reports surface about efforts to clone human cells.

• These and many other stories involve biology—the science that employs scientific methodology to study living things. The Greek word bios means “life,” and -logy means “study of.”

Characteristics of Living Things

What characteristics do all living things share No single characteristic is enough to describe a

living thing Some things, such as viruses, exist at the border

between organisms and nonliving things.

9 Characteristics of Living Things

A universal genetic code DNA.


Grow and develop Single fertilized egg divides again and again They differentiate, which means they perform

different functions.


Respond to their environment Stimulus: signal to which an organism responds.


Reproduce Most plants and animals engage in sexual

reproduction Cells from two parents unite to form the first cell of a new

organism Asexual reproduction

Single organism produces offspring identical to itself.


Maintain homeostasis Relatively stable internal environment.


Metabolism Obtain and use material and energy to grow, develop,

and reproduce.


Made up of one or more cells Cells can grow, respond to their surroundings, and

reproduce Cells are complex and highly organized.


Groups of organisms evolve.

Big Ideas in Biology

Cellular basis of life Information and

heredity Matter and energy Growth, development,

and reproduction Homeostasis

Evolution Structure and function Unity and diversity of

life Interdependence in

nature Science as a way of

knowing.

Fields of Biology

Global Ecology Biotechnology Building the Tree of Life Ecology and Evolution of Infectious Diseases Genomics and Molecular Biology

Scientific Measurement

Scientists use the metric system when collecting data and performing experiments.


1 kilometer = ___ meters .45 liters = ___milliliters 5000 milligrams = ___grams 130 meters = ___ kilometers 2500 milliliters = ___liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = ___milliliters 5000 milligrams = ___grams 130 meters = ___ kilometers 2500 milliliters = ___liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = 450 milliliters 5000 milligrams = ___grams 130 meters = ___ kilometers 2500 milliliters = ___liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = 450 milliliters 5000 milligrams = 5 grams 130 meters = ___ kilometers 2500 milliliters = ___liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = 450 milliliters 5000 milligrams = 5 grams 130 meters = .13 kilometers 2500 milliliters = ___liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = 450 milliliters 5000 milligrams = 5 grams 130 meters = .13 kilometers 2500 milliliters = 2.5 liters .017 grams = ___milligrams


1 kilometer = 1000 meters .45 liters = 450 milliliters 5000 milligrams = 5 grams 130 meters = .13 kilometers 2500 milliliters = 2.5 liters .017 grams = 17 milligrams

Documents

1. Review - What are the themes in biology that come up again and again