Inside the Cell Flashcards
What is the ultrastructure?
the detail of the inside of cells, revealed by electron microscope
What is the division of labour within the cell?
Each type of organelle has a specific role within the cell, they work together
What is the cytoskeleton?
network of fibres made of protein which keep the cells shape by providing an internal framework
Which of the fibres inside the cell are the fibres in muscle?
Actin filaments, move against each other, cause movement seen in some WBCs, also move some organelles
What are microtubules?
cylinders 25nm diameter, made of protein: tubulin, used to move microorganism through liquid, to waft liquid, use ATP to do this
What do the other proteins in the microtubules do? What are some examples of that?
Move organelles and other cell contents along the fibres, chromosomes are moved in mitosis, vesicle movement. Known as microtubule motors
How can undulipodia and cilia move?
The microtubules can use energy from ATP
How long are cilia?
less than 10um
How are flagella different from undulipodia?
look similar but different internal structure, made of spiral protein attached by a hook to a protein disk at base, ATP makes disk rotate
What does the nucleus make?
RNA and ribosomes
What the smooth ER do?
making the lipids that cells need
What does the Golgi do to proteins?
modifies them (add sugar mols), packages into vesicles
What does ATP stand for?
adenosine triphosphate
What are the inner parts of the mitochondria called?
inner: highly folder to form cristae, central part is the matrix
What is the cell wall in prokaryotes usually made of?
not cellulose, peptidoglycan/murein
