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Exam 4: A Tour of the Cell

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Question 1

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______ are the major lipids of plasma membranes.

A) Steroids
B) Fatty acids
C) Mosaics
D) Phospholipids

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Question 2

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Most human cells contain ______ chromosomes.

A) 36
B) 46
C) 2
D) 23

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Question 3

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What structures move proteins from the ER to the Golgi apparatus?

Where does protein synthesis take place?

Microtubules are associated with ______.

Information is transferred from the nucleus to ribosomes via ______.

Examine the following photographs.Which of the techniques reveal internal cellular detail?

Cellular respiration can be described as the conversion of the energy ______.

The figure below shows a Paramecium,a single-celled freshwater protist.The hairlike structures visible on the Paramecium allow it to move.These structures are ______.

Read the following scenario to answer the following question(s) . 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. -What evidence suggests that mitochondria might have evolved before chloroplasts?

Which theory states that all living things are composed of cells?

The structural combination of DNA and protein forms ______.

A hormone that will be secreted from the cell is manufactured by ribosomes _____.

In eukaryotic cells,what name is given to the region between the nucleus and the plasma membrane?

You find a cell of a type you have never seen before.The cell has both a nucleus and a cell wall.Therefore,you conclude that it must be a ______ cell.

In plant cells,______ may contain organic nutrients,pigments,and poisons.

When mixed with water,phospholipids spontaneously form membranes because they ______.

The endomembrane system includes ______.

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

Which of the following is a function of the Golgi apparatus?