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BC Science 9 Ch4

BC Science 9 Chapter 4

Separates internal cell environment with outside environment Cell membrane
A tough rigid structure that surrounds a plant cell membrane Cell Wall
A jelly-like substance that contains organelles and fluid Cytoplasm
A specialized part of a cell that has a specific function for the cell Organelle
Energy organelle Mitochondria
Traps the energy from the sun to make sugar Chloroplast
Site of protein synthesis Ribosomes
Biological molecule that function as enzymes, hormones or as structural molecules Proteins
Membrane covered organelle that is part of the protein making process Rough endoplasmic reticulum
Membrane covered organelle that is part of the fat (lipid) making process Smooth endoplasmic reticulum
Membrane bound structure used for transporting new proteins Vesicle
Membrane bound structure used storage of materials Vacuole
Sorts and packages proteins Golgi body
Controls the activities of the cell Nucleus
Surrounds the nucleus Nuclear membrane
Membrane free organelle that helps make ribosomes Nucleolus
Opening in the nuclear membrane that allows material into and out of the nucleus Nuclear pore
Looks like a twisted ladder DNA
Thymine Adenine always pairs with ?? in DNA
Guanine Cytosine always pairs with ?? in DNA
DNA and protein; found in the nucleus Chromatin
Compacted genetic material; 46 in human cells Chromosome
Contains information to make proteins Gene
Speeds up reactions in cells Enzymes
Chemical messenger in the body Hormone
A change in the order of the genetic bases Gene mutations
Mutation that benefits an individual Positive
Mutation that potentially harms an individual Negative
Mutation that does not harm the individual Neutral
Created by: darrinaustin