Question 1

In which part of a chloroplast does photosynthesis occur?

Accepted Answer

A)  stroma 
B)  outermost membrane 
C)  innermost membrane 
D)  between the two outer membranes 
E)  ribosomes 
A)  stroma 
B)  outermost membrane 
C)  innermost membrane 
D)  between the two outer membranes 
E)  ribosomes C

Question 2

An example of a biofilm is ____.

Accepted Answer

A)  oral bacteria living on teeth 
B)  a bacterial capsule 
C)  elongated pili 
D)  an oil slick 
E)  microalgae on a pond surface 
A)  oral bacteria living on teeth 
B)  a bacterial capsule 
C)  elongated pili 
D)  an oil slick 
E)  microalgae on a pond surface A

Question 3

Which organelle completes protein modifications and packages the protein for export?

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 B

Question 4

Plasmids are ____.

Accepted Answer

A)  circular RNA elements 
B)  linear DNA elements 
C)  circular DNA found in the nucleus 
D)  circular DNA found in the cytoplasm 
E)  linear RNA elements 
A)  circular RNA elements 
B)  linear DNA elements 
C)  circular DNA found in the nucleus 
D)  circular DNA found in the cytoplasm 
E)  linear RNA elements

Question 5

Plasmodesmata are most similar to ____.

Accepted Answer

A)  gap junctions in animal cells 
B)  tight junctions in bacteria 
C)  basement membranes in animal cells 
D)  adhering junctions in heart muscle 
E)  both tight junctions in bacteria and adhering junctions in heart muscle 
A)  gap junctions in animal cells 
B)  tight junctions in bacteria 
C)  basement membranes in animal cells 
D)  adhering junctions in heart muscle 
E)  both tight junctions in bacteria and adhering junctions in heart muscle

Question 6

Which two cellular components are enclosed by a membrane?

Accepted Answer

A)  ribosomes and peroxisomes 
B)  microtubules and cytosol 
C)  Golgi apparatus and peroxisomes 
D)  chloroplasts and microtubules 
E)  endoplasmic reticulum and ribosomes 
A)  ribosomes and peroxisomes 
B)  microtubules and cytosol 
C)  Golgi apparatus and peroxisomes 
D)  chloroplasts and microtubules 
E)  endoplasmic reticulum and ribosomes

Question 7

Hydrophobic interactions of phospholipid tails make the ____ conformation of cell membranes possible.

Accepted Answer

A)  lipid bilayer 
B)  single-layer 
C)  rigid 
D)  cytoskeletal 
E)  nonpolar 
A)  lipid bilayer 
B)  single-layer 
C)  rigid 
D)  cytoskeletal 
E)  nonpolar

Question 8

According to cell theory, ____.

Accepted Answer

A)  all organisms are multicellular 
B)  all cells come from preexisting cells 
C)  DNA is the structural and functional unit of life 
D)  all cells are approximately the same size 
E)  proteins are the genetic material of cells 
A)  all organisms are multicellular 
B)  all cells come from preexisting cells 
C)  DNA is the structural and functional unit of life 
D)  all cells are approximately the same size 
E)  proteins are the genetic material of cells

Question 9

Transport proteins _____.

Accepted Answer

A)  are found only in eukaryotic cells 
B)  allow only small molecules and ions to cross the membrane 
C)  are required for small nonpolar molecules to cross the membrane 
D)  allow ions and polar molecules to cross the membrane 
E)  are peripheral membrane proteins 
A)  are found only in eukaryotic cells 
B)  allow only small molecules and ions to cross the membrane 
C)  are required for small nonpolar molecules to cross the membrane 
D)  allow ions and polar molecules to cross the membrane 
E)  are peripheral membrane proteins

Question 10

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Accepted Answer

A)  pores 
B)  proteins 
C)  phospholipids 
D)  a bilayer construction 
E)  ribosomes 
A)  pores 
B)  proteins 
C)  phospholipids 
D)  a bilayer construction 
E)  ribosomes

Question 11

The relative impermeability of membranes to water-soluble molecules is a result of the ____.

Accepted Answer

A)  nonpolar nature of water 
B)  presence of large proteins that extend through both sides of membranes 
C)  presence of inorganic salt crystals scattered through some membranes 
D)  presence of cellulose and waxes 
E)  presence of phospholipids in the lipid bilayer 
A)  nonpolar nature of water 
B)  presence of large proteins that extend through both sides of membranes 
C)  presence of inorganic salt crystals scattered through some membranes 
D)  presence of cellulose and waxes 
E)  presence of phospholipids in the lipid bilayer

Question 12

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 13

Which hairlike cellular projections line the respiratory tract and sweep inhaled particles away from the lungs?

Accepted Answer

A)  flagella 
B)  cilia 
C)  intermediate filaments 
D)  pseudopods 
E)  microvilli 
A)  flagella 
B)  cilia 
C)  intermediate filaments 
D)  pseudopods 
E)  microvilli

Question 14

Which cell feature is absent in bacterial cells?

Accepted Answer

A)  ribosomes 
B)  cytoplasm 
C)  nucleoid 
D)  nucleus 
E)  DNA 
A)  ribosomes 
B)  cytoplasm 
C)  nucleoid 
D)  nucleus 
E)  DNA

Question 15

Match between columns
                        Premises: The cellular digestion and disposal of biological molecules occurs inside this organelle.
This organelle contains enzymes to break down bacteria that may enter the cell.
This organelle translates RNA into protein.
The packaging of secretory proteins occurs in association with this structure.
Aerobic respiration occurs in this organelle.
This organelle stores the cell's genetic material.
This organelle is studded with ribosomes.
This organelle replicates independently of the cell and likely evolved from bacteria.
This organelle is involved in lipid synthesis.

Accepted Answer

The Answer of rough endoplasmic reticulum and mitochondrion and Golgi is...

Question 16

The endomembrane system is composed of ____.

Accepted Answer

A)  microtubules, microfilaments, and intermediate filaments 
B)  endoplasmic reticulum, Golgi apparatus, and peroxisomes 
C)  vesicles, peroxisomes, and chloroplasts 
D)  mitochondria, Golgi apparatus, and ribosomes 
E)  plasma membrane, nuclear envelope, and thylakoid membranes 
A)  microtubules, microfilaments, and intermediate filaments 
B)  endoplasmic reticulum, Golgi apparatus, and peroxisomes 
C)  vesicles, peroxisomes, and chloroplasts 
D)  mitochondria, Golgi apparatus, and ribosomes 
E)  plasma membrane, nuclear envelope, and thylakoid membranes

Question 17

The double membrane of mitochondria contains the ATP-making machinery; therefore, this is where ____ would be found.

Accepted Answer

A)  proteins and enzymes required for aerobic respiration 
B)  DNA 
C)  ribosomes 
D)  plasmids 
E)  vesicles 
A)  proteins and enzymes required for aerobic respiration 
B)  DNA 
C)  ribosomes 
D)  plasmids 
E)  vesicles

Question 18

Which organelle primarily functions in packaging cellular secretions for export from the cell?

Accepted Answer

A)  Golgi body 
B)  mitochondria 
C)  lysosome 
D)  ribosome 
E)  endoplasmic reticulum 
A)  Golgi body 
B)  mitochondria 
C)  lysosome 
D)  ribosome 
E)  endoplasmic reticulum

Question 19

A water-soluble hormone (signaling molecule) would most likely bind to which membrane protein?

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 20

Which organelle is enclosed by a double membrane?

Accepted Answer

A)  ribosome 
B)  nucleus 
C)  lysosome 
D)  peroxisome 
E)  Golgi body 
A)  ribosome 
B)  nucleus 
C)  lysosome 
D)  peroxisome 
E)  Golgi body

Exam 3: Cell Structure

In which part of a chloroplast does photosynthesis occur?

An example of a biofilm is ____.

Which organelle completes protein modifications and packages the protein for export?

Plasmids are ____.

Plasmodesmata are most similar to ____.

Which two cellular components are enclosed by a membrane?

Hydrophobic interactions of phospholipid tails make the ____ conformation of cell membranes possible.

According to cell theory, ____.

Transport proteins _____.

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

The relative impermeability of membranes to water-soluble molecules is a result of the ____.

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

Which hairlike cellular projections line the respiratory tract and sweep inhaled particles away from the lungs?

Which cell feature is absent in bacterial cells?

The endomembrane system is composed of ____.

The double membrane of mitochondria contains the ATP-making machinery; therefore, this is where ____ would be found.

Which organelle primarily functions in packaging cellular secretions for export from the cell?

A water-soluble hormone (signaling molecule) would most likely bind to which membrane protein?

Which organelle is enclosed by a double membrane?

Invitation to Biology

Molecules of Life

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and 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

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

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