7.2 Slides Flashcards
cell is divided into 2 major parts:
cytoplasm: portion of the cell that is semi-jell liquid
nucleus: membrane bound
the nucleolus makes:
ribosomes which are sent through nuclear pores to the ER
ribosomes produce:
proteins
what are the instructions for making proteins:
DNA, transcription occurs in the nucleus to make messenger RNA (mRNA) and the ribosomes translate the mRNA to make proteins
What happens during transcription?
DNA gets unzipped and copyed, copy is called mRNA (has uracil in it) which goes to ribosomes
What is glucose broken down into?
glucose then sugar then ATP
what is the purpose of contractile vacuoles?
to prevent protozoa from collapsing or exploding because of lack or too much water
what is the mitosis?
cell divison
what does the rough ER deal with compared to the smooth ER?
rough: proteins
smooth: lipids
organelles are suspended in:
cytoplasm
what are organelles?
little organs that carry our a specific function in the cell
Eukarotic cells are like a
factory
differnet organelles of a cell are compared to:
specialized machines and assembly lines
cells must follow
“instructions” and produce products
what are the products of cells?
proteins (all living things are made up of proteins)
the nucleus contains:
DNA which isthe blueprint for making proteins
what is the difference between a prokaryote and a eukaryote?
pro- no organized nucleus does not have a nuclear membrane
Eu- has organized nucleus with nuclear membrane
what do vacuoles and vesicles do?
store materials like water, salts, proteins, and carbohydrates
plants have a large central:
vacuole filled with liquid to maintain the rigidity of the plant
Contriactile vacuoles are importnat in:
unicellular organisms
contractile vacuoles help maintian:
a contstant pressure inside the cell versus the pressure outside of the cell and vice versa
rythmic contractions of the contractile vacuole prevent:
the unicellular organism from exploding or caving in on itself
lysosomes contain ______ which break down_____ to produce_______
digestive enzymes which break down lipids, carbs, proteins to produce smaller more usable molecules for the cell to use
lysosmes digest:
worn out parts of the cell (recycle) and digest invading bacteria