Which of the following statements about the outer mitochondrial membrane is not true? The outer membrane is highly permeable to substances of small molecular weight The outer membrane is about 50% lipid and 50% protein by weight The outer membrane contains porins The outer membrane is impermeable to hydrogen ions TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements about mitochondrial proteins is true? All mitochondrial proteins are coded for and synthesized in the mitochondria Mitochondrial proteins arise from other mitochondrial proteins Some mitochondrial proteins are coded for and synthesized in the mitochondria and others All mitochondrial proteins are imported from the cytoplasm TRUE ANSWER : ? YOUR ANSWER : ?
Which is not true about a photon? It donates electron to reduce carbon dioxide to glucose It is trapped by photosynthetic unit The shorter the wavelength, the greater the energy of the photons It is a packet of light energy TRUE ANSWER : ? YOUR ANSWER : ?
The composition of the inner mitochondrial membrane is most like that of the cell's plasma membrane the outer mitochondrial membrane the nuclear membrane some bacterial plasma membranes TRUE ANSWER : ? YOUR ANSWER : ?
Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential? None of these The rules governing oxidation and reduction apply only in vitro, and not in vivo Electrons always go from reductants with high redox potentials to oxidants with low redox potentials Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions TRUE ANSWER : ? YOUR ANSWER : ?
Both plant and animal cell possess central vacuoles cell walls mitochondria chloroplast TRUE ANSWER : ? YOUR ANSWER : ?
A cell without cell wall is called apoplast none of these protoplast symplast TRUE ANSWER : ? YOUR ANSWER : ?
Which part of a plant contains the male sex cell? Style Ova Stamen Pollen TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an electron carrier class in the electron transport chain? Iron - sulfur proteins Cytochrome c oxidase Flavoproteins Cytochromes TRUE ANSWER : ? YOUR ANSWER : ?
The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that mitochondria are surrounded by a semi permeable membrane mitochondria were derived from a symbiotic bacterium the mitochondrial matrix is hypertonic to the cellular cytoplasm the mitochondrial matrix is hypotonic to the cellular cytoplasm TRUE ANSWER : ? YOUR ANSWER : ?