Question 1

Which of the following is the correct difference between rough endoplasmic reticula and smooth ER?

Accepted Answer

A)  rough ER is an extension of the nuclear envelope; smooth ER is not 
B)  smooth ER has a double bilayer membrane; rough ER does not 
C)  smooth ER consists of flattened sacs and tubes; rough ER does not 
D)  rough ER has a surface studded with ribosomes; smooth ER does not 
E)  smooth ER synthesizes proteins: rough ER does not 
A)  rough ER is an extension of the nuclear envelope; smooth ER is not 
B)  smooth ER has a double bilayer membrane; rough ER does not 
C)  smooth ER consists of flattened sacs and tubes; rough ER does not 
D)  rough ER has a surface studded with ribosomes; smooth ER does not 
E)  smooth ER synthesizes proteins: rough ER does not

Question 2

If the size of a cell doubles what will be the surface area to volume ratio?

Accepted Answer

A)  8 to 4 
B)  4 to 8 
C)  16 to 4 
D)  16 to 8 
E)  64 to 16 
A)  8 to 4 
B)  4 to 8 
C)  16 to 4 
D)  16 to 8 
E)  64 to 16

Question 3

Most of the active functions of plasma membranes are carried out by

Accepted Answer

A)  cholesterol. 
B)  proteins. 
C)  hydrophilic heads. 
D)  hydrophobic tails. 
E)  carbohydrates. 
A)  cholesterol. 
B)  proteins. 
C)  hydrophilic heads. 
D)  hydrophobic tails. 
E)  carbohydrates.

Question 4

In nature,a biofilm may include

Accepted Answer

A)  bacteria only. 
B)  microscopic algae only. 
C)  fungi only. 
D)  protists only. 
E)  bacteria, microscopic algae, protests, and fungi. 
A)  bacteria only. 
B)  microscopic algae only. 
C)  fungi only. 
D)  protists only. 
E)  bacteria, microscopic algae, protests, and fungi.

Question 5

Which of the following structures allows a bacterium to propel itself through its environment?

Accepted Answer

A)  microfilaments 
B)  intermediate filaments 
C)  microvillus 
D)  flagellum 
E)  microtubule 
A)  microfilaments 
B)  intermediate filaments 
C)  microvillus 
D)  flagellum 
E)  microtubule

Question 6

How do the plasma membranes of Archaea differ from the plasma membranes of Eukarya?

Accepted Answer

A)  their membranes are more rigid 
B)  their membrane phospholipids do not have fatty acids 
C)  their membrane phospholipids have reactive side chains 
D)  their membrane phospholipids form covalent bonds with one another 
E)  all of these are differences of the plasma membranes of Archaea 
A)  their membranes are more rigid 
B)  their membrane phospholipids do not have fatty acids 
C)  their membrane phospholipids have reactive side chains 
D)  their membrane phospholipids form covalent bonds with one another 
E)  all of these are differences of the plasma membranes of Archaea

Question 7

Match the organelle with the appropriate statement.
-RNA carries out the genetic code translation process in association with ribosomes on this organelle.

Accepted Answer

A) nucleus 
B) mitochondrion 
C) lysosome 
D) Golgi body 
E) rough endoplasmic reticulum 
A) nucleus 
B) mitochondrion 
C) lysosome 
D) Golgi body 
E) rough endoplasmic reticulum

Question 8

Hydrophobic interactions of the tails of phospholipids produce

Accepted Answer

A)  a lipid bilayer. 
B)  hydrolysis of the fatty acids. 
C)  a protein membrane. 
D)  a cytoskeleton. 
E)  a nonpolar membrane. 
A)  a lipid bilayer. 
B)  hydrolysis of the fatty acids. 
C)  a protein membrane. 
D)  a cytoskeleton. 
E)  a nonpolar membrane.

Question 9

An organelle that finishes a protein and packages it for export is a

Accepted Answer

A)  lysosome 
B)  Golgi body 
C)  peroxisome 
D)  smooth ER 
E)  rough ER 
A)  lysosome 
B)  Golgi body 
C)  peroxisome 
D)  smooth ER 
E)  rough ER

Question 10

Which of the following organelles is thought to have evolved from a bacterium?

Accepted Answer

A)  nuclei 
B)  Golgi bodies 
C)  chloroplasts 
D)  mitochondria 
E)  more than one of these 
A)  nuclei 
B)  Golgi bodies 
C)  chloroplasts 
D)  mitochondria 
E)  more than one of these

Question 11

What role do prokaryotic pili play?

Accepted Answer

A)  they help organize the cytoplasm 
B)  they help stabilize DNA molecules 
C)  they help prokaryotes cling to surfaces 
D)  they help prokaryotes move across surfaces 
E)  more than one of these is correct 
A)  they help organize the cytoplasm 
B)  they help stabilize DNA molecules 
C)  they help prokaryotes cling to surfaces 
D)  they help prokaryotes move across surfaces 
E)  more than one of these is correct

Question 12

One of the generalizations of the cell theory is that

Accepted Answer

A)  all cells have a nucleus. 
B)  all cells divide by meiosis. 
C)  all living organisms are made up of cells. 
D)  cells arise through spontaneous generation. 
E)  growth is solely the result of cell division. 
A)  all cells have a nucleus. 
B)  all cells divide by meiosis. 
C)  all living organisms are made up of cells. 
D)  cells arise through spontaneous generation. 
E)  growth is solely the result of cell division.

Question 13

Which of the following is a biofilm?

Accepted Answer

A)  dental plaque 
B)  a bacterial capsule 
C)  elongated pili 
D)  an oil slick 
E)  none of these are examples of biofilms 
A)  dental plaque 
B)  a bacterial capsule 
C)  elongated pili 
D)  an oil slick 
E)  none of these are examples of biofilms

Question 14

Which organelle makes most of the lipids that form the cell's membranes?

Accepted Answer

A)  rough ER 
B)  smooth ER 
C)  Golgi body 
D)  peroxisomes 
E)  mitochondria 
A)  rough ER 
B)  smooth ER 
C)  Golgi body 
D)  peroxisomes 
E)  mitochondria

Question 15

Which of the following is NOT a part of the cell theory?

Accepted Answer

A)  All organisms are cellular. 
B)  Cells are the structural and functional units of life. 
C)  All cells come from preexisting cells. 
D)  All cells are approximately the same size. 
E)  All cells have inheritable material. 
A)  All organisms are cellular. 
B)  Cells are the structural and functional units of life. 
C)  All cells come from preexisting cells. 
D)  All cells are approximately the same size. 
E)  All cells have inheritable material.

Question 16

MATCHING
Examine the following figure and answer,matching each letter of the figure with the appropriate question number.
  
-flagellum

Accepted Answer

The answer of MATCHING
Examine the following figure and answer,matching each...

Question 17

A water-soluble hormone (signaling molecule)would most likely bind to which of the following membrane proteins?

Accepted Answer

A)  active transporter 
B)  recognition 
C)  receptor 
D)  passive transporter 
E)  regulator 
A)  active transporter 
B)  recognition 
C)  receptor 
D)  passive transporter 
E)  regulator

Question 18

Eukaryotic cells have their DNA enclosed in the

Accepted Answer

A)  plasma membrane. 
B)  nucleus. 
C)  nucleoid. 
D)  nucleolus. 
E)  nucleotide. 
A)  plasma membrane. 
B)  nucleus. 
C)  nucleoid. 
D)  nucleolus. 
E)  nucleotide.

Question 19

When contaminated with E.coli strains toxic to humans,fresh meat should be cooked to at least ____ in order to prevent any food intoxication.

Accepted Answer

A)  71°C (160°F) 
B)  75°C (167°F) 
C)  65°C (149°F) 
D)  85°C (185°F) 
E)  91°C (196°F) 
A)  71°C (160°F) 
B)  75°C (167°F) 
C)  65°C (149°F) 
D)  85°C (185°F) 
E)  91°C (196°F)

Question 20

Match each cell structure represented by a letter with the appropriate question number.
-store metabolic substances

Accepted Answer

A) peroxisomes 
B) chloroplasts 
C) Golgi bodies 
D) DNA molecules 
E) RNA molecules
F)central vacuoles
G)lysosomes
H)mitochondria
I)nucleoli
J)ribosomes 
A) peroxisomes 
B) chloroplasts 
C) Golgi bodies 
D) DNA molecules 
E) RNA molecules
F)central vacuoles
G)lysosomes
H)mitochondria
I)nucleoli
J)ribosomes

Exam 3: Cell Structure

Which of the following is the correct difference between rough endoplasmic reticula and smooth ER?

If the size of a cell doubles what will be the surface area to volume ratio?

Most of the active functions of plasma membranes are carried out by

In nature,a biofilm may include

Which of the following structures allows a bacterium to propel itself through its environment?

How do the plasma membranes of Archaea differ from the plasma membranes of Eukarya?

Match the organelle with the appropriate statement. -RNA carries out the genetic code translation process in association with ribosomes on this organelle.

Hydrophobic interactions of the tails of phospholipids produce

An organelle that finishes a protein and packages it for export is a

Which of the following organelles is thought to have evolved from a bacterium?

What role do prokaryotic pili play?

One of the generalizations of the cell theory is that

Which of the following is a biofilm?

Which organelle makes most of the lipids that form the cell's membranes?

Which of the following is NOT a part of the cell theory?

MATCHING Examine the following figure and answer,matching each letter of the figure with the appropriate question number. -flagellum

A water-soluble hormone (signaling molecule)would most likely bind to which of the following membrane proteins?

Eukaryotic cells have their DNA enclosed in the

When contaminated with E.coli strains toxic to humans,fresh meat should be cooked to at least ____ in order to prevent any food intoxication.

Match each cell structure represented by a letter with the appropriate question number. -store metabolic substances

Invitation to Biology

Molecules of Life

Energy and Metabolism

Capturing and Releasing Energy

DNA Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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