Question 1

An organelle found in plant cells and some members of the kingdom Protista,but not in animal cells,is

Accepted Answer

A) a centriole. 
B) a ribosome. 
C) a cell membrane. 
D) a lysosome. 
E) a chloroplast. 
A) a centriole. 
B) a ribosome. 
C) a cell membrane. 
D) a lysosome. 
E) a chloroplast. E

Question 2

You are working on a forensics team and collect cells from a crime scene.The cells have a cell wall made of cellulose.This sample most likely came from

Accepted Answer

A) an animal. 
B) a bacterium. 
C) a plant. 
D) a fungus. 
E) an archaean. 
A) an animal. 
B) a bacterium. 
C) a plant. 
D) a fungus. 
E) an archaean. C

Question 3

A junction that is a protein channel linking the cytoplasm of adjacent cells is called

Accepted Answer

A) a tight junction. 
B) a gap junction. 
C) an adhering junction. 
D) an anchoring junction. 
E) a microtubular junction. 
A) a tight junction. 
B) a gap junction. 
C) an adhering junction. 
D) an anchoring junction. 
E) a microtubular junction. B

Question 4

What type of membrane protein is involved in passing ions and polar molecules across membranes?

Accepted Answer

A) transport proteins 
B) enzymes 
C) recognition proteins 
D) adhesion proteins 
E) receptor proteins 
A) transport proteins 
B) enzymes 
C) recognition proteins 
D) adhesion proteins 
E) receptor proteins

Question 5

Penicillin halts bacterial infections

Accepted Answer

A) by stimulating a person's immune system. 
B) by damaging the cell membrane. 
C) by interfering with the construction of the cell wall. 
D) by causing the DNA of a bacterium to mutate. 
E) All answers are correct. 
A) by stimulating a person's immune system. 
B) by damaging the cell membrane. 
C) by interfering with the construction of the cell wall. 
D) by causing the DNA of a bacterium to mutate. 
E) All answers are correct.

Question 6

Flagella are not

Accepted Answer

A) found on prokaryotic cells. 
B) found on human sperm. 
C) used for movement. 
D) found on eukaryotic cells. 
E) a component of the cytoskeleton. 
A) found on prokaryotic cells. 
B) found on human sperm. 
C) used for movement. 
D) found on eukaryotic cells. 
E) a component of the cytoskeleton.

Question 7

All living cells have a cell wall.

Accepted Answer

A) True 
 B)False

Question 8

What is the advantage of a mature red blood cell having a flattened shape rather than a spherical shape?

Accepted Answer

A) Their surface area to volume will decrease,making it easier for them to fit through arteries and veins. 
B) Provides more membrane for the electron transport chains where oxygen is consumed. 
C) Provides more sites for the membrane-bound hemoglobin molecules which transport oxygen. 
D) Saves energy by making more membrane relative to the volume of the cell. 
E) Maximizes the relative surface area to exchange gasses. 
A) Their surface area to volume will decrease,making it easier for them to fit through arteries and veins. 
B) Provides more membrane for the electron transport chains where oxygen is consumed. 
C) Provides more sites for the membrane-bound hemoglobin molecules which transport oxygen. 
D) Saves energy by making more membrane relative to the volume of the cell. 
E) Maximizes the relative surface area to exchange gasses.

Question 9

A eukaryotic cell

Accepted Answer

A) has a cell wall with peptidoglycan. 
B) is usually smaller than a prokaryotic cell. 
C) does not have membrane-bound organelles. 
D) has membrane-bound organelles. 
E) does not usually have a nucleus. 
A) has a cell wall with peptidoglycan. 
B) is usually smaller than a prokaryotic cell. 
C) does not have membrane-bound organelles. 
D) has membrane-bound organelles. 
E) does not usually have a nucleus.

Question 10

In a human,the intestines need to form a barrier to prevent bacteria and other microbes from moving into the bloodstream from the gut.What type of cell junction will prevent bacteria from moving between intestinal cells?

Accepted Answer

A) gap junction 
B) plasmodesmata 
C) anchoring junction 
D) cell wall 
E) tight junction 
A) gap junction 
B) plasmodesmata 
C) anchoring junction 
D) cell wall 
E) tight junction

Question 11

What is the role of microfilaments in eukaryotic cells?

Accepted Answer

A) component of the cytoskeleton 
B) provide strength during cell stretching and compression 
C) anchor cells to each other 
D) involved in muscle contractions with myosin protein 
E) All answers are correct. 
A) component of the cytoskeleton 
B) provide strength during cell stretching and compression 
C) anchor cells to each other 
D) involved in muscle contractions with myosin protein 
E) All answers are correct.

Question 12

The three domains in the Woese system of classification are

Accepted Answer

A) Bacteria,Animalia,and Plantae. 
B) Fungi,Protista,and Animalia. 
C) Archaea,Eukarya,and Protista. 
D) Monera,Bacteria,and Eukarya. 
E) Archaea,Bacteria,and Eukarya. 
A) Bacteria,Animalia,and Plantae. 
B) Fungi,Protista,and Animalia. 
C) Archaea,Eukarya,and Protista. 
D) Monera,Bacteria,and Eukarya. 
E) Archaea,Bacteria,and Eukarya.

Question 13

What is the advantage of keeping the surface to volume ratio high in a cell?

Accepted Answer

A) Maximizes the relative surface area to exchange nutrients,water,and waste. 
B) Maximizes the relative surface area for cooling. 
C) Provides more volume to store more organelles. 
D) Provides more volume to store more nutrients. 
E) Saves energy by making more membrane relative to the volume of the cell. 
A) Maximizes the relative surface area to exchange nutrients,water,and waste. 
B) Maximizes the relative surface area for cooling. 
C) Provides more volume to store more organelles. 
D) Provides more volume to store more nutrients. 
E) Saves energy by making more membrane relative to the volume of the cell.

Question 14

The theory of endosymbiosis is based on

Accepted Answer

A) the knowledge that ribosomes are structures found in bacteria,plants,and animals. 
B) the experiments in which bacteria were grown in plant cells and formed chloroplasts. 
C) the knowledge that chloroplasts and mitochondria resemble bacteria. 
D) evidence from the fossil recorD. 
E) similarities between chloroplasts and other organelles in animals. 
A) the knowledge that ribosomes are structures found in bacteria,plants,and animals. 
B) the experiments in which bacteria were grown in plant cells and formed chloroplasts. 
C) the knowledge that chloroplasts and mitochondria resemble bacteria. 
D) evidence from the fossil recorD. 
E) similarities between chloroplasts and other organelles in animals.

Question 15

The cell wall of bacteria

Accepted Answer

A) helps prevent the cell from bursting. 
B) protects the cell. 
C) All answers are correct. 
D) contains peptidoglycan. 
E) gives the bacterium a distinctive shapE. 
A) helps prevent the cell from bursting. 
B) protects the cell. 
C) All answers are correct. 
D) contains peptidoglycan. 
E) gives the bacterium a distinctive shapE.

Question 16

In most mammals,the DNA found in mitochondria is inherited from

Accepted Answer

A) the father only. 
B) the mother and father. 
C) either parent. 
D) the mother only. 
E) Mitochondria are not found in mammals. 
A) the father only. 
B) the mother and father. 
C) either parent. 
D) the mother only. 
E) Mitochondria are not found in mammals.

Question 17

The scientist (scientists)given credit for formulating the "cell theory" is (are)

Accepted Answer

A) Robert Hooke. 
B) Carl Woese. 
C) J.Craig Venter. 
D) Mathias Schleiden and Theodore Schwann. 
E) Antony van Leeuwenhoek. 
A) Robert Hooke. 
B) Carl Woese. 
C) J.Craig Venter. 
D) Mathias Schleiden and Theodore Schwann. 
E) Antony van Leeuwenhoek.

Question 18

Unlike most organelles,chloroplasts and mitochondria contain

Accepted Answer

A) only one membrane. 
B) ribosomes,DNA,and double membranes. 
C) DNA and cilia. 
D) cilia and flagella. 
E) singles membranes and ribosomes. 
A) only one membrane. 
B) ribosomes,DNA,and double membranes. 
C) DNA and cilia. 
D) cilia and flagella. 
E) singles membranes and ribosomes.

Question 19

In muscle contractions ____ and myosin filaments slide across each other.

Accepted Answer

A) tubulin 
B) actin 
C) intermediate filaments 
D) flagella 
E) cilia 
A) tubulin 
B) actin 
C) intermediate filaments 
D) flagella 
E) cilia

Question 20

When phospholipids are mixed with water their ____ are attracted to water and their ____ are repelled by water,forming a lipid bilayer.

Accepted Answer

A) hydrophobic heads;hydrophilic tails 
B) hydrophobic tails;hydrophilic heads 
C) hydrophilic heads;hydrophobic tails 
D) hydrophilic tails;hydrophobic heads 
E) hydrophilic heads;hydrophilic tails 
A) hydrophobic heads;hydrophilic tails 
B) hydrophobic tails;hydrophilic heads 
C) hydrophilic heads;hydrophobic tails 
D) hydrophilic tails;hydrophobic heads 
E) hydrophilic heads;hydrophilic tails

Exam 3: Cells

An organelle found in plant cells and some members of the kingdom Protista,but not in animal cells,is

You are working on a forensics team and collect cells from a crime scene.The cells have a cell wall made of cellulose.This sample most likely came from

A junction that is a protein channel linking the cytoplasm of adjacent cells is called

What type of membrane protein is involved in passing ions and polar molecules across membranes?

Penicillin halts bacterial infections

Flagella are not

All living cells have a cell wall.

What is the advantage of a mature red blood cell having a flattened shape rather than a spherical shape?

A eukaryotic cell

In a human,the intestines need to form a barrier to prevent bacteria and other microbes from moving into the bloodstream from the gut.What type of cell junction will prevent bacteria from moving between intestinal cells?

What is the role of microfilaments in eukaryotic cells?

The three domains in the Woese system of classification are

What is the advantage of keeping the surface to volume ratio high in a cell?

The theory of endosymbiosis is based on

The cell wall of bacteria

In most mammals,the DNA found in mitochondria is inherited from

The scientist (scientists)given credit for formulating the "cell theory" is (are)

Unlike most organelles,chloroplasts and mitochondria contain

In muscle contractions ____ and myosin filaments slide across each other.

When phospholipids are mixed with water their ____ are attracted to water and their ____ are repelled by water,forming a lipid bilayer.

Scientific Study of Life

The Chemistry of Life

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

Filters

When phospholipids are mixed with water their are attracted to water and their are repelled by water,forming a lipid bilayer.