Question 1

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

Accepted Answer

A)   have hydrophilic phosphate groups that are attracted to water and hydrophobic fatty acid tails that avoid water
B)   have hydrophilic fatty acid tails that are attracted to water and hydrophobic phosphate groups that avoid water
C)   have hydrophilic heads that are attracted to their hydrophobic tails
D)   are both fluid and mosaicE) A) and B)
F) None of the above

Question 2

Which of the following is an adaptation to increase the surface area of a part of a cell that is involved in cellular respiration?

Accepted Answer

A)   the cristae of a mitochondrion
B)   the outer membrane of a chloroplast
C)   the grana of a chloroplast
D)   the endoplasmic reticulumE) A) and C)
F) B) and C)

Question 3

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

Accepted Answer

A)   transport proteins
B)   central vacuole
C)   transport vesicles
D)   nucleolusE) B) and D)
F) All of the above

Question 4

A protist that contains contractile vacuoles most likely lives ________.

Accepted Answer

A)   in a marine environment
B)   within the cells of another organism
C)   in fresh water
D)   in iceE) All of the above
F) A) and D)

Question 5

Tobacco smokers (and those exposed to tobacco smoke) are at greater risk of an ectopic (tubal) pregnancy.Based on your understanding of the structures of the cytoskeleton,what is the BEST explanation?

Accepted Answer

A)   Tobacco interferes with the microtubule network of eggs thus weakening their structure.
B)   Tobacco interferes with the functioning of the flagella propelling sperm.
C)   Tobacco interferes with microfilament formation in sperm, thereby forcing the zygote to implant in a fallopian tube.
D)   Tobacco interferes with the sweeping motion of cilia that aids in the movement of the egg toward the uterus.E) A) and B)
F) A) and C)

Question 6

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 is likely to be a(n) ________ cell.

Accepted Answer

A)   prokaryotic
B)   animal
C)   bacterial
D)   plantE) C) and D)
F) B) and D)

Question 7

________ store the information necessary to produce proteins.

Accepted Answer

A)   Lysosomes
B)   Genes
C)   Ribosomes
D)   CarbohydratesE) A) and B)
F) All of the above

Question 8

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

Accepted Answer

A)   cell theory
B)   Hooke's rule
C)   evolutionary theory
D)   Mendel's lawE) A) and B)
F) All of the above

Question 9

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

Accepted Answer

A)   digestion of organic matter inside the cell
B)   protein modification
C)   drug detoxification
D)   cell respirationE) A) and D)
F) None of the above

Question 10

Using the figure below for a reference,approximately how many times larger is a nucleus compared to a protein?

Accepted Answer

A)   10 times larger
B)   100 times larger
C)   1,000 times larger
D)   10,000 times largerE) A) and B)
F) A) and C)

Question 11

The endomembrane system includes ________.

Accepted Answer

A)   ribosomes, lysosomes, vacuoles, and the endoplasmic reticulum
B)   Golgi apparatus, nucleolus, vacuoles, and the endoplasmic reticulum
C)   Golgi apparatus, lysosomes, ribosomes, and the endoplasmic reticulum
D)   Golgi apparatus, lysosomes, vacuoles, and the endoplasmic reticulumE) C) and D)
F) B) and C)

Question 12

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

Accepted Answer

A)   of sunlight to energy stored in organic compounds
B)   stored in food molecules to energy stored in ATP
C)   stored in ATP to energy stored in food molecules
D)   stored in ATP to energy used to do workE) C) and D)
F) A) and B)

Question 13

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

Accepted Answer

A)   cytoplasm
B)   phospholipid bilayer
C)   nucleoid
D)   chloroplastE) A) and C)
F) B) and C)

Question 14

The concept of a membrane as a fluid mosaic reflects the ability of ________.

Accepted Answer

A)   phospholipids and most proteins to drift about in the plane of the membrane
B)   phospholipids but not proteins to drift about in the plane of the membrane
C)   most proteins but not phospholipids to drift about in the plane of the membrane
D)   carbohydrates to drift into and out of the membrane structureE) A) and B)
F) B) and C)

Question 15

When using a microscope to view cells you obtained from scraping under your fingernails,you notice that the cells lack nuclei; therefore,you conclude that the cells must be a type of ________ cell.

Accepted Answer

A)   plant
B)   eukaryotic
C)   fungal
D)   prokaryoticE) All of the above
F) A) and B)

Question 16

Most human cells contain ________ chromosomes.

Accepted Answer

A)   36
B)   46
C)   2
D)   23E) B) and D)
F) B) and C)

Question 17

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

Accepted Answer

A)   mitochondria
B)   chloroplasts
C)   lysosomes
D)   central vacuolesE) A) and D)
F) A) and C)

Question 18

Vacuoles are ________.

Accepted Answer

A)   membranous sacs
B)   manufactured by ribosomes
C)   composed of microtubules
D)   found only in plant cellsE) None of the above
F) A) and C)

Question 19

Plants are susceptible to bacterial infections,which can damage their structure or even kill them.Which of the following would be the best antibiotic to treat a plant that is infected with bacteria?

Accepted Answer

A)   a drug that interferes with mitochondria function
B)   a drug that disrupts cell wall structure and function
C)   a drug that destroys the central vacuole
D)   a drug that blocks gene expression in circular chromosomesE) All of the above
F) A) and B)

Question 20

Tay-Sachs disease results from ________ lacking a specific type of lipid-digesting enzyme.

Accepted Answer

A)   the Golgi apparatus
B)   lysosomes
C)   mitochondria
D)   the endoplasmic reticulumE) B) and C)
F) None of the above

Exam 4: A Tour of the Cell

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

Correct AnswerverifiedShow Answer

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

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Tobacco smokers (and those exposed to tobacco smoke) are at greater risk of an ectopic (tubal) pregnancy.Based on your understanding of the structures of the cytoskeleton,what is the BEST explanation?

Correct AnswerverifiedShow Answer

The endomembrane system includes ________.

Correct AnswerverifiedShow Answer

Vacuoles are ________.

Correct AnswerverifiedShow Answer

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

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A protist that contains contractile vacuoles most likely lives ________.

Correct AnswerverifiedShow Answer

________ store the information necessary to produce proteins.

Correct AnswerverifiedShow Answer

Using the figure below for a reference,approximately how many times larger is a nucleus compared to a protein?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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 is likely to be a(n) ________ cell.

Correct AnswerverifiedShow Answer

Tay-Sachs disease results from ________ lacking a specific type of lipid-digesting enzyme.

Correct AnswerverifiedShow Answer

Which of the following is an adaptation to increase the surface area of a part of a cell that is involved in cellular respiration?

Correct AnswerverifiedShow Answer

Most human cells contain ________ chromosomes.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The concept of a membrane as a fluid mosaic reflects the ability of ________.

Correct AnswerverifiedShow Answer

Plants are susceptible to bacterial infections,which can damage their structure or even kill them.Which of the following would be the best antibiotic to treat a plant that is infected with bacteria?

Correct AnswerverifiedShow Answer

When using a microscope to view cells you obtained from scraping under your fingernails,you notice that the cells lack nuclei; therefore,you conclude that the cells must be a type of ________ cell.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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