Scicence Mr. Perez Flashcards
The work of Schleiden and Schwann can be summarized by saying, what ?
that all plants and animals are made out of cells.
Name the 3 basic principles of cell theory.
1) The cell is the basic unit of life
2) all living are made of cells
3) All cells come from existing cells
Which type of cell contains a nucleus?
Eukaryotes
Name 3 functions of a nucleus.
1) Stores DNA
2) controls cellular processes
3) contains the information for protein synthesis
Which organelle breaks down food into energy molecules the cell can use?
The mitochondria
Which structure makes proteins using coded instructions that come from the nucleus?
Ribosomes
Which 2 organelles help provide cells with energy?
Mitochondria and chloroplasts
What are the names of the chemical reactions that occur in these organelles?
Mitochondria –cellular respiration;
Chloroplasts - photosynthesis
Which organelle would you expect to find in plants but not in animals?
chloroplasts
What is the function of the cell wall?
It is to support and protect the cell.
Which structure regulates the materials that enter and leave the cell?
Cell membrane
What is the sequence of the levels of organization from smallest to largest?
Organelles, cell, tissue, organ, organ system, organism
Which organelle would you expect to find in animal cells but not plant cells?
centrioles
According to the cell theory, all cells are formed through what
biogenesis
In a eukaryote, the jelly-like material between the cell membrane and the nucleus is called…
cytoplasm
