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Miller Levine Biology Chapter 1 Section 3 Characteristics of Life

Miller Levine Dragonfly Book
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meredith akins

on 25 August 2015

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Transcript of Miller Levine Biology Chapter 1 Section 3 Characteristics of Life

Characteristics of Life
END OF SECTION
Which of the following shows the levels of organization in correct order from the simplest to the most complex?
organisms, cells, populations, molecules, ecosystems
ecosystems, populations, organisms, cells, molecules
molecules, cells, organisms, populations, ecosystems
molecules, organisms, cells, populations, ecosystems
1-3
The genetic code is carried in
Water.
DNA.
proteins.
soil.
1-3
Which of the following is NOT a characteristic of all living things?
use of energy
made of cells
stable internal environment
need for oxygen
1-3

More than any other area of study, biology touches your life every day.

How?
Biology in Everyday Life
Nerve cell
Cells
Smallest functional unit of life
Branches of Biology
Bison
Organism
Individual living thing
Branches of Biology
Hawk, snake, bison, prairie dog, grass
Community
Populations that live together in a defined area
Branches of Biology
Biosphere
The part of Earth that contains all ecosystems
Branches of Biology

How can life be studied at different levels?
Response to Environment

Organisms must be able to detect and respond to a stimulus. A
Stimulus
is a signal to which an organism responds.
Structure and Function

Structures evolve in ways that make particular functions possible, allowing organisms to adapt to a wide range of environments.
Big Ideas in Biology
Evolution

In biology, evolution, or the change in living things through time, explains inherited similarities as well as the diversity of life.
Big Ideas in Biology
Unity and Diversity of Life

All living things are fundamentally alike at the molecular level, even though life takes an almost unbelievable variety of forms.
Big Ideas in Biology
All living things reproduce

All living things produce new organisms

Sexual Reproduction- Multicellular organisms-
cells from two different parents unite and fuse to produce the first cell of the new organism

Asexual Reproduction- single cell
the new organism has a single parent
(ex. dividing in half)
All Living Things are made up of
Cells


What are some characteristics of living things?
Which of the following are branches in the study of biology?
cells, tissues, organs, and organisms
botany, cell biology, ecology, and zoology
populations, communities, and ecosystems
the genetic code, evolution, and the biosphere
1-3
An increase in size is known as
growth.
metabolism.
development.
differentiation.
1-3
Water DNA
Molecules
Groups of atoms; smallest unit of most chemical compounds
Branches of Biology
Nervous tissue Brain Nervous system
Tissues
- Groups of Cells
Includes: organs, and organ systems
Branches of Biology
Bison herd
Population
Group of organisms of one type that live in the same area
Branches of Biology
Hawk, snake, bison, prairie dog, grass, stream, rocks, air
Ecosystem
Community and its nonliving surroundings
Branches of Biology
Copyright Pearson Prentice Hall
A Few Branches of Biology

Zoologists
Botanists
Paleontologists
Cell Biologists
Geneticists
Microbiologists
Ecologists
Maintaining Internal Balance

Homeostasis-
An organism’s ability to maintain a relatively stable internal environment.
1-3 Studying Life
Living things share the following characteristics:

made up of units called
cells
reproduce
based on a universal
genetic code
grow
and
develop
obtain and use
materials
and
energy
respond
to their environment
maintain a
stable internal environment
change over time
Cellular Basis of Life

Organisms are composed of one or more cells, which are the smallest units that can be considered fully alive.
Based on a Genetic Code

Genetic code
is common, with minor variations, to every organism on Earth.

That information, carried in DNA, is copied and passed from parents to offspring.
Growth and Development

All living things grow.

For a single cell organism this may mean increase in size.

For a multicellular organism this takes the shape of development. A single cell will divide again and again to produce the organism.

Sometimes rapid and sometimes slooooowwww
Needs Materials and Energy



Metabolism
is the combination of chemical processes through which an organism builds up or breaks down materials.
heliotropism
germination
Full transcript