Cells Flashcards
What are the building blocks of plants and animals known as
Cells
What does each cell maintain
Homeostasis at a cellular level
What is the study of cellular structure and function known as
Cytology
What are the three main parts of a cell
Membrane
Cytoplasm
Nucleus
What part of the cell contains genetic material and processes activity
Nucleus
What part of the cell fills out the cell and shape
Cytoplasm
What part of the cell is the microscopic specialised cell structures that perform specific functions
Organelles
What have a large number of mitochondria in their cells because they use large amounts of ATP
Kidneys
Liver
Muscle
What is the speed of diffusion determined by
Molecular size
Kinetic energy
Temperature
What do passive cell mechanisms include
Diffusion
Osmosis
Filtration
Give two examples of diffusion
Ions across membrane
Neurotransmitters between nerve cells
What substance is the highest in concentration in cells
Potassium
What does the sodium potassium pump do
Leak slowly through leakage channels in membrane
Drives sodium out of cells against large concentration gradient sand pumps potassium back in
