Question 1

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "C" relative to the RBC?

Accepted Answer

A)  Hypotonic solution 
B)  Hypertonic solution 
C)  Isotonic solution 
A)  Hypotonic solution 
B)  Hypertonic solution 
C)  Isotonic solution

Question 2

Receptor-mediated endocytosis

Accepted Answer

A)  does not need ATP; the receptors supply the energy. 
B)  exhibits specificity. 
C)  occurs if oxygen is available. 
D)  is a type of passive transport. 
E)  moves materials out of the cell. 
A)  does not need ATP; the receptors supply the energy. 
B)  exhibits specificity. 
C)  occurs if oxygen is available. 
D)  is a type of passive transport. 
E)  moves materials out of the cell.

Question 3

If all of the peroxisomes in a cell were suddenly removed, how would this affect the cell's function?

Accepted Answer

A)  The cell would no longer be able to break down glucose. 
B)  The cell would be unable to produce proteins. 
C)  The cell would be unable to perform transcription. 
D)  The cell would no longer be able to break down fatty acids, hydrogen peroxide, and amino acids. 
E)  The cell would no longer be able to break down proteins and nucleic acids. 
A)  The cell would no longer be able to break down glucose. 
B)  The cell would be unable to produce proteins. 
C)  The cell would be unable to perform transcription. 
D)  The cell would no longer be able to break down fatty acids, hydrogen peroxide, and amino acids. 
E)  The cell would no longer be able to break down proteins and nucleic acids.

Question 4

-Answer these questions about chromosome structure. What does "C" represent?

Accepted Answer

A)  Chromatid 
B)  Proteins 
C)  Chromosome 
D)  Centromere 
E)  Chromatin 
A)  Chromatid 
B)  Proteins 
C)  Chromosome 
D)  Centromere 
E)  Chromatin

Question 5

The plasma membrane is selectively permeable. This means

Accepted Answer

A)  only gases and water can pass through it. 
B)  substances need permission to pass through it. 
C)  only certain substances can pass through it. 
D)  substances need carrier molecules to pass through it. 
E)  ATP is always needed to move molecules across the plasma membrane. 
A)  only gases and water can pass through it. 
B)  substances need permission to pass through it. 
C)  only certain substances can pass through it. 
D)  substances need carrier molecules to pass through it. 
E)  ATP is always needed to move molecules across the plasma membrane.

Question 6

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "E"?

Accepted Answer

A)  Directs cellular activities, contains DNA 
B)  Contains digestive enzymes 
C)  Outer boundary of cell, controls entry and exit of substances 
D)  Major site of ATP synthesis when oxygen is available 
E)  Site of protein synthesis 
A)  Directs cellular activities, contains DNA 
B)  Contains digestive enzymes 
C)  Outer boundary of cell, controls entry and exit of substances 
D)  Major site of ATP synthesis when oxygen is available 
E)  Site of protein synthesis

Question 7

Endoplasmic reticulum with ribosomes attached to it is called ________ ER.

Accepted Answer

A)  smooth 
B)  dendritic 
C)  nodular 
D)  bumpy 
E)  rough 
A)  smooth 
B)  dendritic 
C)  nodular 
D)  bumpy 
E)  rough

Question 8

In ________, carrier molecules move a substance against (up) its concentration gradient.

Accepted Answer

A)  simple diffusion 
B)  exocytosis 
C)  facilitated diffusion 
D)  active transport 
E)  endocytosis 
A)  simple diffusion 
B)  exocytosis 
C)  facilitated diffusion 
D)  active transport 
E)  endocytosis

Question 9

Which of the following are ciliated cells?

Accepted Answer

A)  Columnar cells of upper respiratory tract 
B)  Sperm cells 
C)  Columnar cells of small intestine 
D)  Red blood cells 
E)  Macrophage (large, mobile white blood cell) 
A)  Columnar cells of upper respiratory tract 
B)  Sperm cells 
C)  Columnar cells of small intestine 
D)  Red blood cells 
E)  Macrophage (large, mobile white blood cell)

Question 10

The predominant lipid in the cell membrane is a ________.

Accepted Answer

A)  phospholipid 
B)  glycolipid 
C)  cholesterol 
D)  prostaglandin 
E)  triglyceride 
A)  phospholipid 
B)  glycolipid 
C)  cholesterol 
D)  prostaglandin 
E)  triglyceride

Question 11

The second most abundant of the lipids in the plasma membrane is/are ________.

Accepted Answer

A)  glycolipids 
B)  saturated fats 
C)  cholesterol 
D)  phospholipids 
E)  triglycerides 
A)  glycolipids 
B)  saturated fats 
C)  cholesterol 
D)  phospholipids 
E)  triglycerides

Question 12

Which molecule(s) cause(s) a portion of a DNA molecule to unwind for transcription?

Accepted Answer

A)  RNA ploymerase 
B)  Transcription factors 
C)  Spliceosomes 
D)  Poly-A tail 
E)  7-methylguanosine cap 
A)  RNA ploymerase 
B)  Transcription factors 
C)  Spliceosomes 
D)  Poly-A tail 
E)  7-methylguanosine cap

Question 13

What is membrane potential?

Accepted Answer

A)  The electrical charge difference across the plasma membrane resulting from differences in ion concentrations inside and outside the cell 
B)  The ability of a membrane to actively transport carbohydrates out of the cytoplasm 
C)  The rate of ATP production and transport by mitochondria 
D)  The ability of molecules to pass through the nuclear envelope 
A)  The electrical charge difference across the plasma membrane resulting from differences in ion concentrations inside and outside the cell 
B)  The ability of a membrane to actively transport carbohydrates out of the cytoplasm 
C)  The rate of ATP production and transport by mitochondria 
D)  The ability of molecules to pass through the nuclear envelope

Question 14

The organelles involved with organization of the spindle fibers are the ________.

Accepted Answer

A)  nuclei 
B)  ribosomes 
C)  lysosomes 
D)  mitochondria 
E)  centrioles 
A)  nuclei 
B)  ribosomes 
C)  lysosomes 
D)  mitochondria 
E)  centrioles

Question 15

-What structure does "C" represent on the diagram of the plasma membrane?

Accepted Answer

A)  Membrane channel protein 
B)  Phospholipid bilayer 
C)  Internal membrane surface 
D)  Peripheral protein 
E)  Integral protein 
A)  Membrane channel protein 
B)  Phospholipid bilayer 
C)  Internal membrane surface 
D)  Peripheral protein 
E)  Integral protein

Question 16

A DNA nucleotide sequence that signals the beginning of a gene is called a ________.

Accepted Answer

A)  transcription factor 
B)  promoter 
C)  triplet 
D)  terminator 
E)  RNA polymerase 
A)  transcription factor 
B)  promoter 
C)  triplet 
D)  terminator 
E)  RNA polymerase

Question 17

Microvilli

Accepted Answer

A)  are extensions of the lysosomal membrane. 
B)  function to make the cell mobile. 
C)  are supported by microtubules. 
D)  move the cell. 
E)  increase the surface area of the cell. 
A)  are extensions of the lysosomal membrane. 
B)  function to make the cell mobile. 
C)  are supported by microtubules. 
D)  move the cell. 
E)  increase the surface area of the cell.

Question 18

A person suffered burns over a large part of his body. Evaporation of fluid from the surface of burned areas occurs. As a result of the evaporation process, cells will tend to

Accepted Answer

A)  shrink. 
B)  swell. 
C)  rupture. 
D)  first swell and then resume their original shape. 
E)  remain unchanged. 
A)  shrink. 
B)  swell. 
C)  rupture. 
D)  first swell and then resume their original shape. 
E)  remain unchanged.

Question 19

Salt was added to a beaker of distilled water (the water was not stirred). A sample taken from the bottom of the beaker was found to be 20% salt. At the same time, a sample taken from the top of the beaker was found to be 2% salt. After 24 hours

Accepted Answer

A)  the difference in the percentage of salt between the top and bottom samples would increase. 
B)  the percentage of salt in the top and bottom samples would be approximately equal. 
C)  the samples would still be 2% and 20% respectively. 
D)  the salt would float to the top. 
E)  None of the choices are correct. 
A)  the difference in the percentage of salt between the top and bottom samples would increase. 
B)  the percentage of salt in the top and bottom samples would be approximately equal. 
C)  the samples would still be 2% and 20% respectively. 
D)  the salt would float to the top. 
E)  None of the choices are correct.

Question 20

Which of the following cell structures is CORRECTLY matched with its function?

Accepted Answer

A)  Nucleolus - contains the genetic material of the cell 
B)  Microtubules - cell support 
C)  Mitochondria - protein synthesis 
D)  Smooth ER - ATP production 
E)  Ribosome - energy production 
A)  Nucleolus - contains the genetic material of the cell 
B)  Microtubules - cell support 
C)  Mitochondria - protein synthesis 
D)  Smooth ER - ATP production 
E)  Ribosome - energy production

Exam 3: Cell Biology

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "C" relative to the RBC?

Receptor-mediated endocytosis

If all of the peroxisomes in a cell were suddenly removed, how would this affect the cell's function?

-Answer these questions about chromosome structure. What does "C" represent?

The plasma membrane is selectively permeable. This means

-The cell is the basic unit of life. All cellular structures exhibit special functions. Match the structure with its function. What is the function of "E"?

Endoplasmic reticulum with ribosomes attached to it is called ________ ER.

In ________, carrier molecules move a substance against (up) its concentration gradient.

Which of the following are ciliated cells?

The predominant lipid in the cell membrane is a ________.

The second most abundant of the lipids in the plasma membrane is/are ________.

Which molecule(s) cause(s) a portion of a DNA molecule to unwind for transcription?

What is membrane potential?

The organelles involved with organization of the spindle fibers are the ________.

-What structure does "C" represent on the diagram of the plasma membrane?

A DNA nucleotide sequence that signals the beginning of a gene is called a ________.

Microvilli

A person suffered burns over a large part of his body. Evaporation of fluid from the surface of burned areas occurs. As a result of the evaporation process, cells will tend to

Salt was added to a beaker of distilled water (the water was not stirred). A sample taken from the bottom of the beaker was found to be 20% salt. At the same time, a sample taken from the top of the beaker was found to be 2% salt. After 24 hours

Which of the following cell structures is CORRECTLY matched with its function?

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

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