Section 7-2 Eukaryotic Cell Structure Flashcards
(26 cards)
Organelle
Little organ
Function of nucleus
Contains nearly all the cell’s DNA and w/ coded instructions for making proteins
Important molecule that nucleus contains
DNA
Granular material visible within the nucleus is called
Chromatin
Granular material in nucleus
Chromatin
Chromatin consists of
DNA bound to protein
Distinct threadlike structures
Chromosomes
How are chromosomes and chromatin different?
Chromatin condenses to form chromosomes
Most nuclei contains a small, dense region known as
Nucleolus
What occurs in the nucleolus?
Assembly of ribosomes begins
Nuclear envelope
Nucleus is surrounded by this.
Its pones allow material to move in and out of the nucleus
Ribosomes
Proteins are assembled on these. They’re small particles of RNA
Lysosomes
Break down organelles that have outlived their usefulness
Contain enzymes that break down lipids, carbohydrates, and proteins
Vacuoles
Saclike structures that store material (water, salts, proteins, carbohydrates)
Role of central vacuole in plants
Pressure makes it possible for plants to support heavy structures (leaves and flowers)
Chloroplast and mitochondria contain their own genetic information in from of
Small DNA molecules
Cytoskeleton
Network of protein filaments that helps the cell to maintain its shape
Ribosome
Small particles of RNA and protein that produces protein following instructions from nucleus
An internal membrane system in which components of cell membrane and some proteins are constructed
Endoplasmic reticulum
Golgi Apparatus
Stack of membrane in which enzyme attach carbohydrates and lipids to proteins
Lysosomes
Filled with enzyme used to break down food into particles that can be used
Saclike structures that store materials
Vacuole
Uses energy from sunlight to make energy rich food
Chloroplast
Uses energy from food to make high energy compounds
Mitochondria
