Quiz Lesson 3
primary structure for the packaging of cellular secretions for export from the cell
Golgi body
All of the following generalizations are part of the "cell theory" except
Every cell maintains the same components that came from the very first cell created
Which of the structures below are present in plant cells but not in animal cells?
cell wall, chloroplast, central vacuole are (nucleus and centriole are not)
fluid-filled sac in plant cells that stores amino acids, sugar, ions, and toxic wastes
central vacuole
plant organelle where photosynethesis takes place
chloroplasts
Choose all of the following statements that accurately describe the cytoskeleton.
it gives the cell its shape, it is an interconnected system of protein filaments, plays a role in reinforcing, moving, and organizing internal cellular structures, some are permanent, some are only made when needed, involved in cell movement
vesicle that buds from Golgi bodies and takes part in intracellular digestion
lysosome
part of the cytoskeleton that plays a role in chromosome movement during cell division
microtubule
Which of the statements below are true about mitochondria?
mitochondria have two membranes, mitochondria are found in nearly all eukaryotic cells
the organelle where ATP production occurs
mitochondrian
separates eukaryotic DNA from the cytoplasm
nucleus
Four of the five answers listed below can be found in both bacteria and eukaryotes. Select the exception.
nucleus (exception), cell wall, cytoplasm, plasma membrane, and ribosomes.
vesicle containing enzymes that digest fatty acids and amino acids
peroxisome
controls substances moving into and out of the cell
plasma membrane
The common components of all cells are
plasma membrane, DNA containing region, cytoplasm
Proteins embedded in the cell membrane can perform what function(s)?
recognize foreign cells, act as receptors, communicate among cells, membrane transport, and adhere to other cells
site of protein synthesis
ribosome
Which of the following is NOT a characteristic of eukaryotic cell walls?
rigid barrier which prevents water from crossing
extension of the nuclear envelope, studded with ribosomes, where new polypeptide chains are modified
rough endoplasmic reticulum
extension of the nuclear envelope where lipids are synthesized
smooth endoplasmic reticulum
the "fluid" part of the fluid mosaic model of the cell membrane refers to what?
the ability of phospholipids to remain as a bilayer, but also spin, drift and wiggle
Which correctly orders the object from largest to smallest?
typical plant cell, red blood cell, bacterium, virus