The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that the mitochondrial matrix is hypotonic to the cellular cytoplasm mitochondria were derived from a symbiotic bacterium the mitochondrial matrix is hypertonic to the cellular cytoplasm mitochondria are surrounded by a semi permeable membrane TRUE ANSWER : ? YOUR ANSWER : ?
The fluid matrix of a cell is called the cytosol cytoskeleton nucleus endoplasmic reticulum TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria? Both strongly resemble prokaryotes, especially in size Both have their own ribosomes Both can live and function independently of the cell Both have their own DNA TRUE ANSWER : ? YOUR ANSWER : ?
Cellular metabolism is an example of a series of reactions occurring under standard conditions a series of reactions that defy the second law of thermodynamics equilibrium metabolism steady-state metabolism TRUE ANSWER : ? YOUR ANSWER : ?
The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form? None Two One Four TRUE ANSWER : ? YOUR ANSWER : ?
Mitochondria can be expected most numerous in green cells none of these muscle cells red blood cells TRUE ANSWER : ? YOUR ANSWER : ?
Which part of a plant contains the male sex cell? Pollen Style Ova Stamen TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following can be found as a part of the mitochondrial matrix? Enzymes All of these Ribosomes DNA TRUE ANSWER : ? YOUR ANSWER : ?
The composition of the inner mitochondrial membrane is most like that of the outer mitochondrial membrane the cell's plasma membrane some bacterial plasma membranes the nuclear membrane TRUE ANSWER : ? YOUR ANSWER : ?
Chemical energy is supplied to eukaryotic cells by mitochondria and chloroplasts mitochondria and ribosomes mitochondria only chloroplasts and golgi complexes TRUE ANSWER : ? YOUR ANSWER : ?