Chapter 6-7 Cell & Membrane Structure Function

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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


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