MVU Test 1 Patho 611

1. It is true that a eukaryotic cell: is smaller than a prokaryotic cell. contains structures called organelles. lacks a well-defined nucleus. does not contain histones. - Answer- contains structures called organelles. 2. The function of a histone found in a eukaryote cell focuses on cellular division. movement. activities. deoxyribonucleic acid (DNA) folding. - Answer- deoxyribonucleic acid (DNA) folding. 3. An organelle that is responsible for the metabolism of cellular energy is referred to as a/an Golgi complex. mitochondrion. endoplasmic reticulum. nucleolus. - Answer- mitochondrion. 4. Which statement best describes a desmosome? A desmosome is a barrier to diffusion Desmosomes hold cells together by continuous bands. A desmosome is a communicating tunnel. Desmosomes function as a zona occludens. - Answer- A desmosome is a barrier to diffusion 5. Which statement describes the function of a second messenger? Binds with membrane-bound receptors via a ligand Triggers a cascade of intracellular events Opens specific channels in the cell membrane Blocks a membrane-bound receptor signal - Answer- Triggers a cascade of intracellular events 6. Which statement is correct regarding cellular energy? Glycolysis is the building of sugar molecules. Oxidative cellular metabolism is a single reaction making adenosine triphosphate (ATP). Oxidative phosphorylation occurs in the mitochondria. Anaerobic glycolysis occurs in the presence of oxygen. - Answer- Oxidative phosphorylation occurs in the mitochondria. 7. Movement of a solute molecule from an area of high concentration to an area of low concentration is called diffusion. filtra