Chapter 6-7 Cell & Membrane Structure Function
What is the size of most bacteria?
1 to 10 microns
What is the size of most mammalian cells?
10 microns to 100 microns
Which of the following procedures and modifies polysaccharides that will be secreted?
Golgi apparatus
Which organelle plays a role in sorting and modification of proteins?
Golgi apparatus
Which of these organelles carries out cellular respiration?
Mitochondria
Which of the following is a prokaryote?
NONE OF THE ABOVE all eukaryotes/fungi -yeast cell -moss -lung epithelial -plasmodium
Which of the following is present in a prokaryotic cell?
Ribosome
Which organelle plays a role in intracellular digestion?
The Lysosome
Which choice correctly describes a feature of the most nuclei that helps promote this exchange?
There are numerous nuclear pores that allow regulated passage of selected items into and out of the nuclear space.
What is the size of mitochondrion?
around one micron
What is the size of ribosomes
less than 1 micron
Asbestos is a material that was once used extensively in construction. One risk from working in a building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells will phagocytize asbestos, but are not able to degrade it. As a result, asbestos fibers accumulate in _____.
lysosomes
Autophagy removes old damaged organelles like mitochondria. Decreased autophagy results in degeneration and inflammation and may result in the "symptoms" of aging. Which of the following choices is most directly involved in the process of autophagy?
lysosomes
Which of the following macromolecules leaves the nucleus of a eukaryotic cell through pores in the nuclear membrane?
mRNA
Suppose a cell has the following molecules & structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria. It could be a cell from ________
nearly any eukaryotic organism
What proteins are not made at the rough ER
proteins that enter the nucleus and bind there with the DNA as part of the chromatin
What is the correct order of the exocytosis or secretion pathway?
rough ER, Golgi, transport vesicles, plasma membrane
Which of these organelles carries out the synthesis of the membrane phospholipids?
smooth ER