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