Cell structures
What are peroxisomes and what do they do?
A single membrane structure that produce hydrogen peroxide for oxidative purposes like digesting detoxifying
Think peroxide-> peroxisomes
What factors affect diffusion across a membrane
temperature, molecule size, distance
What are the three kinds of cell signaling?
Paracrine, Synaptic, Endocrine
Define entropy
A measure of disorder
What is an integrin and what does it do?
Integrins are embedded membrane proteins that help cell–cell and cell–extracellular matrix adhesion
What is Dynein?
A motor protein
What are the three steps of the signal transduction pathway?
Reception, Reduction, Response
What is the first law of thermodynamics
Name a cell structure that is only found in plants? Describe the function of that structure.
cell wall, central vacuole, chloroplast
What endomembrane structure is continuous with the nuclear envelope and synthesizes proteins and packages them into transport vesicles
Rough ER
What are the three types of cell junctions in animals?
tight junctions, desmosomes, gap junction
The entropy of the universe tends to...
Increase
What cytoskeleton structure is intertwined with strands of actin
Microfilaments
Where is the nucleolus and what is its function?
Center of the nucleus and it is where ribosomal RNA is synthesized
Why is cell-cell recognition important?
Important to the body's defense systems, attacking foreign invaders like bacteria
What is energy coupling
occurs when the energy produced by one reaction or system is used to drive another reaction or system
What are the differences between Amyloplasts and Chromoplasts
Amyloplasts are not pigmented and the main function is starch storage (Potato)
Chromoplasts have pigment storage (fall leaves)
what is the Endosymbiotic theory and what evidence supports it
An ancestral prokaryote engulfed aerobic bacteria
Mitochondria and chloroplasts both have their own circular DNA
Plasmodesmata is to plant cells as ______ is to animal cells
Gap Junctions
What is the difference between competitive and non competitive inhibition
competitive- binds to the active site
non competitive- binds to the allosteric site