biology key words Flashcards
what does active transport mean?
the movement of substances from a low to high concentration using energy
what is Alveoli ?
Alveoli are tiny air sacs in the lungs where gas is exchanged during breathing
What are Chromosomes?
Thin strands of DNA
What is Diffusion
The spreading out of particles resulting in movement from a higher concentration to a low concentration
What is a Eukaryotic
Eukaryotes are organisms whose cells contain a nucleus
What is Gas exchange?
The diffusion of gases from an area of higher concentration to an area of lower concentration
What is Mitosis?
Mitosis is when a cell replicates to for, two identical daughter cells
Multicellular
many cells
osmosis
The movement of water molecules from high to low concentration of water across a partially permeable membrane
What is prokaryotic cell?
Single-celled organisms
What does undifferentiated mean?
cells or tissues that do not have specialised structures or functions.
What does Replicated mean?
the process by which a double-stranded DNA molecule is copied to produce an identical DNA molecule
What does specialised mean?
Cells with unique structures and functions in the body
What does Villi mean?
Tiny hair-like projections that line the inside of the small intestine
