Exam 4: A Tour of the Cell

Lysosomes are responsible for ________.

Which plant organelle is responsible for photosynthesis?

A hormone that will be secreted from a cell is manufactured by ribosomes ________.

The nuclear envelope is composed of ________.

Read the following scenario to answer the following questions. Different species of bacteria are resistant to different types of antibiotics. For example, one species of bacteria may be resistant to an antibiotic that targets bacterial ribosomes but may not be resistant to a different antibiotic that targets bacterial cell walls. In order to figure out what type of antibiotic(s) to which a species of bacteria was resistant, a researcher treated the bacteria with four different antibiotics (A, B, C, and D) and measured how many bacteria were alive over the course of a few weeks. The data that she collected are summarized below. -The bacteria show the greatest resistance to which antibiotic?

Examine the structures of the plant and animal cells below.Which of the following organelles connect(s)to the nuclear envelope?

Scenario Questions Read the following scenario to answer the following questions. The earliest cells detectable in fossils were different from the cells in animals, plants, fungi, and protists living today. These first prokaryotic cells gave rise to eukaryotic cells approximately 1.7 billion years ago. The structure of eukaryotic cells today suggests how they might have evolved from their prokaryotic ancestors. Scientists examining mitochondria and chloroplasts now think that these organelles were probably free-living prokaryotes before becoming a part of eukaryotic cells long ago. -Which of the following is a characteristic of mitochondria that suggests that they might have evolved from free-living bacteria?

Some ribosomes are suspended in the cytosol of a cell,whereas other ribosomes ________.

Read the following scenario to answer the following questions. Different species of bacteria are resistant to different types of antibiotics. For example, one species of bacteria may be resistant to an antibiotic that targets bacterial ribosomes but may not be resistant to a different antibiotic that targets bacterial cell walls. In order to figure out what type of antibiotic(s) to which a species of bacteria was resistant, a researcher treated the bacteria with four different antibiotics (A, B, C, and D) and measured how many bacteria were alive over the course of a few weeks. The data that she collected are summarized below. -Why do you think the bacteria start to decline when treated with antibiotic C but then begin to grow as time goes on?

Similar to the nucleus,chloroplasts and mitochondria are ________.

Cells in the thyroid gland produce and secrete thyroid hormone (a polymer of amino acids)that helps to regulate metabolism.What organelle is most likely abundant in cells of the thyroid gland?

If a cell's lysosomes burst,the cell would ________.

Scenario Questions Read the following scenario to answer the following questions. The earliest cells detectable in fossils were different from the cells in animals, plants, fungi, and protists living today. These first prokaryotic cells gave rise to eukaryotic cells approximately 1.7 billion years ago. The structure of eukaryotic cells today suggests how they might have evolved from their prokaryotic ancestors. Scientists examining mitochondria and chloroplasts now think that these organelles were probably free-living prokaryotes before becoming a part of eukaryotic cells long ago. -Which of the following is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria?

Which of the following is a function of the plasma membrane?

Based on its function in detoxifying drugs,you would expect to find a large amount of smooth ER in ________ cells.

Where does protein synthesis take place?

Plant cells,unlike animal cells,are characterized by the presence of a ________.

Which of the following is a feature of prokaryotic cells but NOT eukaryotic cells?

Which of the following parts of a cell is (are)most like the shipping center of a company?

The structural combination of DNA and protein forms ________.