Exam 3: Cell Structure

Which cellular component is considered an organelle?

​The following are organelles found in animal cells. Match the organelle with the appropriate description. An answer may be used more than once. -​The packaging of secretory proteins occurs in association with this structure. A)​nucleus B)​mitochondrion C)​lysosome D)​Golgi body E)​ribosome F)​rough endoplasmic reticulum G)​smooth endoplasmic reticulum

E. coli strains toxic to humans live in the intestine of ____ without sickening them. I. Birds and frogs II. Goats and sheep III. Cattle and deer

The relative impermeability of membranes to water-soluble molecules is a result of the ____.

How does cell volume affect nutrient exchange between the cell and its external environment?

​Meat, fruits, and vegetables could be contaminated with E. coli strains toxic to humans when they come in contact with animal ____. I. Feces II. Urine III. Blood

​The following are organelles found in animal cells. Match the organelle with the appropriate description. An answer may be used more than once. -​This organelle is involved in lipid synthesis. A)​nucleus B)​mitochondrion C)​lysosome D)​Golgi body E)​ribosome F)​rough endoplasmic reticulum G)​smooth endoplasmic reticulum

Matching Examine the following figure. Match each letter of the figure with the appropriate cell structure. ​ -​capsule A)A B)B C)C D)D E)E F)F G)G

Match each cell structure represented with the appropriate description. -storage of metabolic substances A)peroxisomes B)chloroplasts C)Golgi bodies D)DNA molecules E)cuticle F)central vacuoles G)lysosomes H)mitochondria I)pseudopods J)ribosomes

​A water-soluble hormone (signaling molecule) would most likely bind to which membrane protein?

​The following are organelles found in animal cells. Match the organelle with the appropriate description. An answer may be used more than once. -​The cellular digestion and disposal of biological molecules occurs inside this organelle. A)​nucleus B)​mitochondrion C)​lysosome D)​Golgi body E)​ribosome F)​rough endoplasmic reticulum G)​smooth endoplasmic reticulum

The presence of circular DNA in mitochondria and chloroplasts suggests that these organelles evolved from ____.

​If a protein or molecule is taken up by the cell and must be digested, to which cellular structure is it sent?

​A protein is synthesized on a ribosome within the rough endoplasmic reticulum. If the protein needs to be modified and packaged before export from the cell, to which structure is it sent?

​The endoplasmic reticulum is an extension of ____.

Match each cell structure represented with the appropriate description. -receive and process proteins that arrive in vesicles from the rough ER A)peroxisomes B)chloroplasts C)Golgi bodies D)DNA molecules E)cuticle F)central vacuoles G)lysosomes H)mitochondria I)pseudopods J)ribosomes

​Which microscope visualizes specimens coated with a thin layer of metal?

​Which two cellular components are enclosed by a membrane?

​Most of the active functions of plasma membranes are carried out by ____.

​Which organisms are the most diverse forms of life?