Cell Biology Flashcards
to get in or out of cells, dissolved substance have to cross the _____ _________
cell membranes
what does a nucleus do?
it contains the genetic material and controls the activities of the cell
where do most chemical reactions take place?
the cytoplasm
what happens in the ribosomes?
protein synthesis
where is most energy released in respiration?
the mitochondria
what are plant and algal cell walls made of and what does it do?
cellulose, which supports the cell
what do chloroplasts do?
absorb light energy to make food by photosynthesis
what is the permanent vacuole filled with?
cell sap
plant and animal cells are _______ because their genetic material is contained in a nucleus
eukaryotic
bacterial cells are ______ because their genetic material is not enclosed in a nucleus
prokaryotic
sperm cells are specialised because they contain lots of ______ to release lots of energy for swimming
mitochondria
nerve cells are specialised because they are very ____ to transmit messages over long distances
long
muscle cells are specialised because they contain lots of ______ to release energy for contraction
mitochondria
