Question 1

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 2

A protein is synthesized on a ribosome within the rough endoplasmic reticulum. If the protein needs to be modified and packaged before export from the cell, to which structure is it sent?

Accepted Answer

A) endosome 
B) lysosome 
C) Golgi body 
D) nucleus 
E) smooth endoplasmic reticulum 
A) endosome 
B) lysosome 
C) Golgi body 
D) nucleus 
E) smooth endoplasmic reticulum C

Question 3

How does cell volume affect nutrient exchange between the cell and its external environment?

Accepted Answer

A) Very large cells are the best adapted for nutrient exchange. 
B) Very small cells are the best adapted for nutrient exchange. 
C) Nutrient exchange is not impacted by cell volume. 
D) The ratio of cell volume to surface area determines the efficiency of nutrient exchange. 
E) Cells with a large volume and small surface area are well-adapted for nutrient exchange. 
A) Very large cells are the best adapted for nutrient exchange. 
B) Very small cells are the best adapted for nutrient exchange. 
C) Nutrient exchange is not impacted by cell volume. 
D) The ratio of cell volume to surface area determines the efficiency of nutrient exchange. 
E) Cells with a large volume and small surface area are well-adapted for nutrient exchange. D

Question 4

The development of the nervous system requires the migration and lengthening of neuronal cells. These events are driven by ____.

Accepted Answer

A) pseudopods 
B) motor proteins 
C) flagella 
D) intermediate filaments 
E) microfilaments 
A) pseudopods 
B) motor proteins 
C) flagella 
D) intermediate filaments 
E) microfilaments

Question 5

____ are cellular structures that act like propellers to move a cell through fluid environments.

Accepted Answer

A) Pilli 
B) Microvilli 
C) Cilia 
D) Flagella 
E) Microfilaments 
A) Pilli 
B) Microvilli 
C) Cilia 
D) Flagella 
E) Microfilaments

Question 6

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 7

To visualize the structure of DNA, which has a width of 10 nm, which microscope would be best?

Accepted Answer

A) fluorescence microscope 
B) light microscope 
C) staining microscope 
D) polarized microscope 
E) electron microscope 
A) fluorescence microscope 
B) light microscope 
C) staining microscope 
D) polarized microscope 
E) electron microscope

Question 8

If a protein or molecule is taken up by the cell and must be digested, to which cellular structure is it sent?

Accepted Answer

A) the mitochondria 
B) the lysosome 
C) the rough endoplasmic reticulum 
D) the smooth endoplasmic reticulum 
E) the Golgi body 
A) the mitochondria 
B) the lysosome 
C) the rough endoplasmic reticulum 
D) the smooth endoplasmic reticulum 
E) the Golgi body

Question 9

Which statement describes bacteria?

Accepted Answer

A) Most bacteria are harmful. 
B) Bacteria only inhabit surfaces. 
C) Bacteria outnumber human cells in our bodies. 
D) Bacteria are restricted in their distribution to certain ecosystems. 
E) Bacteria are the most common organisms in the Domain Eukarya. 
A) Most bacteria are harmful. 
B) Bacteria only inhabit surfaces. 
C) Bacteria outnumber human cells in our bodies. 
D) Bacteria are restricted in their distribution to certain ecosystems. 
E) Bacteria are the most common organisms in the Domain Eukarya.

Question 10

Peptic ulcers are caused by damage to the wall of the stomach by the acids that help digest food. This can be caused by the failure of ____.

Accepted Answer

A) tight junctions 
B) adhering junctions 
C) gap junctions 
D) plasmodesmata 
E) adhering and gap junctions 
A) tight junctions 
B) adhering junctions 
C) gap junctions 
D) plasmodesmata 
E) adhering and gap junctions

Question 11

Match between columns
                        Premises: This organelle translates RNA into protein.

Accepted Answer

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

Question 12

____ are involved in the transfer of genetic information from one bacterial cell to another.

Accepted Answer

A) Flagella 
B) Pili 
C) Cilia 
D) Ribosomes 
E) Bacterial chromosomes 
A) Flagella 
B) Pili 
C) Cilia 
D) Ribosomes 
E) Bacterial chromosomes

Question 13

Match between columns
                        Premises: pilus

Accepted Answer

The Answer of A and F and E and C is...

Question 14

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 15

Which hair-like 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 16

Since viruses are typically 20-200 nm in diameter, the ____ microscope is best for viewing them.

Accepted Answer

A) light 
B) electron 
C) fluorescent 
D) polarizing 
E) contrasting 
A) light 
B) electron 
C) fluorescent 
D) polarizing 
E) contrasting

Question 17

Which organisms are the most diverse forms of life?

Accepted Answer

A) protists 
B) fungi 
C) animals 
D) bacteria and archaea 
E) plants 
A) protists 
B) fungi 
C) animals 
D) bacteria and archaea 
E) plants

Question 18

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

Question 19

Adhesion proteins are ____.

Accepted Answer

A) embedded in the nuclear envelope 
B) involved in binding to signaling molecules 
C) involved in nutrient transport 
D) found only in bacterial plasma membranes 
E) needed to fasten cells together 
A) embedded in the nuclear envelope 
B) involved in binding to signaling molecules 
C) involved in nutrient transport 
D) found only in bacterial plasma membranes 
E) needed to fasten cells together

Question 20

Which organelle is correctly matched with its function?

Accepted Answer

A) vacuoles: production of ATP from carbohydrates 
B) rough ER: synthesis of plasma membrane proteins 
C) Golgi bodies: synthesis of membrane phospholipids 
D) mitochondria: capture of light for photosynthesis 
E) smooth ER: digestion of invading bacteria 
A) vacuoles: production of ATP from carbohydrates 
B) rough ER: synthesis of plasma membrane proteins 
C) Golgi bodies: synthesis of membrane phospholipids 
D) mitochondria: capture of light for photosynthesis 
E) smooth ER: digestion of invading bacteria

Exam 3: Cell Structure

An example of a biofilm is ____.

A protein is synthesized on a ribosome within the rough endoplasmic reticulum. If the protein needs to be modified and packaged before export from the cell, to which structure is it sent?

How does cell volume affect nutrient exchange between the cell and its external environment?

The development of the nervous system requires the migration and lengthening of neuronal cells. These events are driven by ____.

____ are cellular structures that act like propellers to move a cell through fluid environments.

According to cell theory, ____.

To visualize the structure of DNA, which has a width of 10 nm, which microscope would be best?

If a protein or molecule is taken up by the cell and must be digested, to which cellular structure is it sent?

Which statement describes bacteria?

Peptic ulcers are caused by damage to the wall of the stomach by the acids that help digest food. This can be caused by the failure of ____.

____ are involved in the transfer of genetic information from one bacterial cell to another.

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

Which hair-like cellular projections line the respiratory tract and sweep inhaled particles away from the lungs?

Since viruses are typically 20-200 nm in diameter, the ____ microscope is best for viewing them.

Which organisms are the most diverse forms of life?

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

Adhesion proteins are ____.

Which organelle is correctly matched with its function?

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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