Chapter 3 Flashcards
Lipid by layer provides protection controls permeability, isolation, sensitivity
Cell membrane
Entire cellular content, cytosol, and organelles
Cytoplasm
Fluid part of the cell, syrupy fluid in which organelles float
Cytosol
Network of proteins that give the cell shape and support
Cytoskeleton
Long membrane extensions that move substances along the cell surface
Cilia
Separate chromosomes during cell division often found in right angles
Centrioles
Synthesize proteins, freely floating in cytosol, synthesize proteins that remain in the cell
Free ribosome
Are attached to the rough endoplasmic rectilium. Synthesized proteins that are going to be excreted
Bound ribosome
Double membrane with pores, it stores and protects DNA
Nucleus
Has bound ribosomes on its surface, it packages proteins for transport in the cell for secretion
Rough endoplasmic rectilium
Lacks ribosomes on its surface, synthesize lipids for membrane growth and repair
Smooth endoplasmic rectilium
Short membrane extensions that increase the surface area for absorption
Microvilli
Series of flattened membranous sacs; modify proteins and package them into secretory vesicles for release
Golgi apparatus
Contain enzymes that convert glucose and oxygen into 36 atp
Mitochondria
Specialized vessels that contain enzymes that digest foreign substances
Lysosomes
Scientists estimate that each cell of the body contains instructions, written in a chemical language called_______ to synthesize somewhere between 10,000 and 30,000 different proteins
Deoxyribonucleic acid DNA
Are organic molecules that perform a very large majority of the functions within a cell
Proteins
Make up the cytoskeleton and other structural elements
Structural proteins
Some proteins are called ______, proteins involved in biochemical reactions that do things like break down large molecules into smaller ones, and they can also build large molecules from smaller ones
Enzymes
All of these thousands of proteins are made of the exact same 20 building blocks called
Amino acids
What makes one protein different from all the others is the number and order of the
Amino acids
Our protein factory has a distinct outer wall, the _______, which isolates the internal environment from other cells and chemicals.
Cell membrane
The cell membrane is composed of ________
Lipids
Proteins
Cholesterol
Carbohydrates
This ________ regulates what substances can enter or exit the cell which makes the cell semi permeable
Cell membrane
All the contents of the cell are called the ______, which includes a syrupy liquid called ______ and all the organelles floating in the syrup
Cytoplasm
Cytosol
The control center for our cells is called
The nucleus
The membrane surrounding the nucleus is called the ________ and is a double membrane with openings in it called ______, for small chemicals to pass
Nuclear envelope
Nuclear pores
The nucleus contains molecules of _______ which is the instructions for the order and arrangement of the amino acids in every protein for the cell
DNA
Builds the protein products is the
Ribosome
Ribosomes simply wait for instructions called_________ on which protein is currently needed and how to build that specific protein
MRNA
If a protein stays within the cell it is synthesized on a
Free ribosome
If the protein is to be secreted, when the ribosome binds to mRNA it will then attach to the __________, build the protein, and then insert into the lumen of the _______
Endoplasmic reticulum
Ribosomes that are bound to the ER are referred to as ?
Rough endoplasmic reticulum