A Brief Overview
of
7th Grade Science
Cell Biology
- All
living organisms are composed of cells, from just one to many trillions,
whose details usually are visible only through a microscope.
- Know
the difference between animal and plant cells.
- Know that
the nucleus is the repository for genetic information in plant and animal
cells.
- Know
that cells divide to increase their numbers through a process of mitosis.
Genetics
- A
typical cell of any organism contains genetic instructions that specify
its traits. Those traits may be
modified by environmental influences.
- Know
the differences between the life cycles and reproduction methods of sexual
and asexual organisms.
- Know
one or more genes can determine an inherited trait.
- DNA is
the genetic material of living organisms.
Evolution
- Biological
evolution accounts for the diversity of species developed through gradual
processes over many generations.
- Genetic
variation and environmental factors are causes of evolution and diversity
of organisms.
- Extinction
of a species occurs when the environment changes and that the adaptive
characteristics of a species are insufficient for its survival.
Earth and Life History
- Evidence
from rocks allows us to understand the evolution of life on Earth.
- Earth
processes today re similar to those that occurred in the past and slow
geologic processes have large cumulative effects over long periods of
time.
- Major
catastrophic events have disrupted the history of life on Earth.
- The
rock cycle includes the formation of new sediment and rocks and that rocks
are often found in layers with the oldest generally on the bottom.
- Fossils
provide evidence of how life and environmental conditions have changed.
Structure and Function in Living Systems
- The
anatomy and physiology of plants and animals illustrate the complementary
nature of structure and function.
- Organ
system function because of the contributions of individual organs, tissues
and cells.
- Bones
and muscles work together to provide a structural framework for movement.
Physical Principles in Living Systems
- Physical
principles underlie biological structures and functions.
- Know
the properties of light.
- Compare
joints in the body to simple machines.
Investigation and Experimentation
- Science
Fair Project!
- Develop
a testable question.
- Develop
a hypothesis.