How can we help?

You can also find more resources in our Help Center.

28 terms

Apologia Biology, 2nd Ed; Mod. 6 (modified)

This is a modified vocabulary list for Module 6. NOT ALL VOCAB WORDS INCLUDED
STUDY
PLAY
Absorption
The transport of dissolved substances into cells
Digestion
The breakdown of absorbed substances
Excretion
The removal of soluble waste materials
Secretion
The release of biosynthesized substances
Homeostasis
Maintaining the status quo
Middle lamella
The thin film between the cell walls of adjacent plant cells
Plasma membrane
The semipermeable membrane between the cell contents and either the cell wall or the cell's surroundings
Cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended
Ions
Substances in which at least one atom has an imbalance of protons and electrons
Mitochondria
The organelles in which nutrients are converted to energy
Lysosome
The organelle in animal cells responsible for hydrolysis reactions that break down proteins, polysaccharides, disaccharides, and some lipids
Ribosomes
Non-membrane-bounded organelles responsible for protein synthesis
Leucoplasts
Organelles that store starches or oils
Chromoplasts
Organelles that contain pigments used in photosynthesis
Golgi bodies
The organelles where proteins and lipids are stored and then modified to suit the needs of the cell
Microtubules
Spiral strands of protein molecules that form a tubelike structure
Nuclear membrane
A highly- porous membrane that separates the nucleus from the cytoplasm
Chromatin
Clusters of DNA, RNA, and proteins in the nucleus of a cell
Cytoskeleton
A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
Phospholipid
A lipid in which one of the fatty acid molecules has been replaced by a molecule that contains a phosphate group
Active transport
Movement of molecules through the plasma membrane (typically opposite the dictates of osmosis or diffusion) aided by apocess that requires energy
Isotonic solution
A solution in which the concentration of solutes is essentially equal to that of the cell which resides in the solution
Plasmolysis
Collapse of a walled cell's cytoplasm due to a lack of water
Hypotonic solution
A solution in which the concentration of solutes is less than that of the cell that resides in the solution
Activation energy
Energy necessary to get a chemical reaction going
Electron transport system
This is the last stage of cellular respiration. It takes place in the mitochondrion. The hydrogen that was produced in the previous three stages is carefully reacted with oxygen to make water.
Endoplasmic recticulum
An organelle composed of an extensive network of folded membranes that performs several tasks within a cell
Phagocytosis
The process by which a cell engulfs foreign substances or other cells