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Chapter 2 Vocab words for final
mr.hobbs vocab words for the final
30
Science
7th Grade
06/13/2010

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Term
Living Things
Definition

Characteristics:

Cellular Organization

Contain similar chemicals

Use energy

Respond to surroundings.

Grow and develop

Reproductive

Term
Eukaryotes
Definition
They are members of the domeian eukarya. This organism with cells that contain nuclei.
Term
Domeian Eukarya
Definition

Domeian Eukarya

Protists     Fungi     Plants    Animal

Term
Classification Order
Definition

Domain   ----------Eukarya

Kingdom  ----------Animalia

Phylium  ---------Chordata

Class  --------- Aves

Order  ---------Strigi Formes

Family  --------Strigidae

Genus  -------Bubo

Species---------Bubovirginianus

 

Term
Prokaryotes
Definition
They are members of the domeian bacteria this organism does not have a nucleus, the chemical instruction that direct the cell's activities.
Term
Binomial Nomenclature
Definition

Naming each organism by a unique two part scientific name

 

Term
Taxonomy
Definition
The study of how living things are classified.
Term
Classification
Definition
Process of grouping things based on their similarities so that the organisms are easier to study,
Term
Homeostasis
Definition
The maintanance of stable internal condition just right for cells to function.
Term
Hetrotroph
Definition
An organism that can't make their own food they get energy by feeding on others.
Term
Autotroph
Definition
The food they make to carry out their own life function.
Term
Unicellular
Definition

Single cell organism

Example   Bacteria

Term
Cell
Definition
Basic unit of structure and function in an organism.
Term
Cell Theory
Definition

An explanation for the elationshipbetween cells and living things.

.All living things are composed of cells.

. Cells are basic unit of function and structure in living things.

.All cells produce from other cells.

 

Term
Parts of a Cell
Definition

.Nucleus    . Glogy body

Ribosome     . Endoplasmic  Reticulum

Vacuole   .Mitochondria

Cell wall   . Nuclear Envelope

Lysosomes  . Chromosome

Cell membrane   . Chloroplasts

Term
Nucleus
Definition
The large oval structure acts as the 'Brain'of the cell, It is the cell control center directing all the cell's activities.
Term
Nuclear Membrane
Definition
It surronds the nucleus and it is called the nuclear envelope, material pass in and out at nucleus through pores in the  nuclear envelope.
Term
Nucleolus
Definition

It is small object floating in the nucleus,where ribosomes are made.

Ribosomes produce protein

which is an important chemical.

Term
Endoplasmic Reticulum
Definition
Endoplasmic reticulum carry proteins and other materials from one part of the cell th another.
Term
ribosomes
Definition
they are small grain-like bodies that float in the cytoplasm,they produce protein which is released through the wall of the endoplasmic-reticulum
Term
mitochondria
Definition
rode-shaped structures and are known as the "powerhouse" of the cell because the convert energy  from food molecules so the cell can use this energy to carry out its function
Term
vacuole
Definition
they are large water-filled sacks floating in the cytoplasm, they are the storage area of the cell. most plants have large vacuoles some animals have it but not all
Term
chromatin
Definition
thin strands of genetic material floating in the nucleus they direct the cell's function
Term
lysosomes
Definition
small round structures containing chemicals that break down materials in the cell they are the cell's clean-up crew
Term
chloroplasts
Definition
these are the large green structures floating in the cytoplasm they capture sunlight energy and use it to produce food
Term
Multicellular
Definition
are composed of many cells that are specialized to do certain work
Term
Genus
Definition
the first part of organisms name, a classififcation grouping that contains similar closely related organisms
Term
Species
Definition
the second word in a scietific naem, which describes features of an aorganism and its appearance it is a group of similar prganism that can mate and reproduce
Term
Cell Wall
Definition
Cell wall is a rigid layer of non- living material that surround the cells of plants, plant cell walls help protect and support the cell, it is made of cellulose
Term
Cell Membrane
Definition
All cells have cell membranes, itis located just inside the cell wall, it forms the outside boundary that separates the cell from its enviorment it controls what comes in and goes out of the cell
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