MCAT: Cell Biology correctly answered rated A+

MCAT: Cell BiologyCell Theory - correct answer 1) All living things are made of cells 2) Cell is the basic functional unit of life 3) Cells are formed from other cells 4) Cells contain DNA (genetic information) Are viruses living organisms? - correct answer No. They dont contain DNA (they have RNA), and they are not able to reproduce on their own (violates 3 and 4 of cell theory) Eukaryotic cells vs Prokaryotic cells - correct answer Eu: Nucleus. Pro: No nucleus Nucleus - correct answer -contains all of the necessary information for replication -surrounded by the nuclear envelope that protects nucleus from cytoplasm Nucleolus - correct answer -makes up 25% of the nucleus -rRNA synthesis Mitochondria - correct answer -power plant of the cell, provides energy -outer membrane, inner membrane (cristae), intermembrane space, michondrial matrix -semi-autonomous - have their own DNA and can replicate through binary fision = cytoplasmic/extranuclear inheritance **RBCs don't have mitochondria - their only source of energy is from glycolysis Apoptosis - correct answer -programmed cell death -mitchondria can do apoptosis, as well as lysosomes