Question 1

Vacuoles are ________.

Accepted Answer

A)  membranous sacs 
B)  manufactured by ribosomes 
C)  composed of microtubules 
D)  found only in plant cells 
A)  membranous sacs 
B)  manufactured by ribosomes 
C)  composed of microtubules 
D)  found only in plant cells

Question 2

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 reticulum 
A)  the Golgi apparatus 
B)  lysosomes 
C)  mitochondria 
D)  the endoplasmic reticulum

Question 3

Most human cells contain ________ chromosomes.

Accepted Answer

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

Question 4

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. 
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.

Question 5

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 law 
A)  cell theory 
B)  Hooke's rule 
C)  evolutionary theory 
D)  Mendel's law

Question 6

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 structure 
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 structure

Question 7

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

Accepted Answer

A)  transport proteins 
B)  central vacuole 
C)  transport vesicles 
D)  nucleolus 
A)  transport proteins 
B)  central vacuole 
C)  transport vesicles 
D)  nucleolus

Question 8

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)  chloroplast 
A)  cytoplasm 
B)  phospholipid bilayer 
C)  nucleoid 
D)  chloroplast

Question 9

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 ice 
A)  in a marine environment 
B)  within the cells of another organism 
C)  in fresh water 
D)  in ice

Question 10

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 reticulum 
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 reticulum

Question 11

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)  prokaryotic 
A)  plant 
B)  eukaryotic 
C)  fungal 
D)  prokaryotic

Question 12

________ store the information necessary to produce proteins.

Accepted Answer

A)  Lysosomes 
B)  Genes 
C)  Ribosomes 
D)  Carbohydrates 
A)  Lysosomes 
B)  Genes 
C)  Ribosomes 
D)  Carbohydrates

Question 13

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 mosaic 
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 mosaic

Question 14

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 respiration 
A)  digestion of organic matter inside the cell 
B)  protein modification 
C)  drug detoxification 
D)  cell respiration

Question 15

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 reticulum 
A)  the cristae of a mitochondrion 
B)  the outer membrane of a chloroplast 
C)  the grana of a chloroplast 
D)  the endoplasmic reticulum

Question 16

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)  plant 
A)  prokaryotic 
B)  animal 
C)  bacterial 
D)  plant

Question 17

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

Accepted Answer

A)  mitochondria 
B)  chloroplasts 
C)  lysosomes 
D)  central vacuoles 
A)  mitochondria 
B)  chloroplasts 
C)  lysosomes 
D)  central vacuoles

Question 18

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 work 
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 work

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 chromosomes 
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 chromosomes

Question 20

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

Exam 4: A Tour of the Cell

Vacuoles are ________.

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

Most human cells contain ________ chromosomes.

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?

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

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

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

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

A protist that contains contractile vacuoles most likely lives ________.

The endomembrane system includes ________.

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.

________ store the information necessary to produce proteins.

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

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

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

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.

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

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

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?

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

Introduction: Biology Today

Essential Chemistry for Biology

The Molecules of Life

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells from Cells

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

Filters