Units 4, 5, 7, 8 Flashcards
Chloroplast
Helps plants with the photosynthesis process; convert light energy into chemical energy
Chlorophyll molecules thrive in…
Bright light
Cellulose
Protects the cell and cell wall
Central Vacuole
large, single, membrane-enclosed sacs
Tonoplast
membrane of the vacuole
Cytoskeleton
change shape, mechanical strength, maintain shape, movement, cell division
Microfilaments
small in size
Microtubules
larger in size
Nucleolus
synthesizes ribosomal RNA
Ribosomes
consist of RNA, bind mRNA, transfer RNA
Chromatin
consists of protein, RNA, and DNA
Cytoplasm
gel-like fluid inside cell
Endomembrane System
a network of organelles that exchange materials through small membrane-enclosed transport vesicles
Smooth ER vs. Rough ER
smooth ER lacks ribosomes while rough ER has many ribosomes
Golgi Complex
Also known as the Golgi apparatus; processes, sorts, and modifies proteins
Three areas of a Golgi stack:
Cis face
Trans face
Medial region
Cis face
entry surface
Trans face
exit surface
Medial region
in between
Lysosome
small sacs of digestive enzymes dispersed in the cytoplasm of animal cells (hydrolytic enzymes)
Phospholipids
amphipathic molecules with distinct hydrophobic and hydrophilic regions
Passive transport
transportation DOWN a concentration gradient
Move from HIGH to a LOW concentration
Examples of passive transport include:
Simple diffusion
Facilitated diffusion
Osmosis
Active Transport
require energy in the form of ATP, transport against the concentration gradient
Move from a LOW to a HIGH concentration