Question 1

If the amino acid coding region of an mRNA molecule is 1800 nucleotides (bases) in length, this molecule will contain ________ codons.

Accepted Answer

A)  400 
B)  600 
C)  800 
D)  900 
E)  1200 
A)  400 
B)  600 
C)  800 
D)  900 
E)  1200

Question 2

The intracellular digestive organelle of a cell is the ________.

Accepted Answer

A)  lysosome 
B)  microtubule 
C)  lipochrome 
D)  rough endoplasmic reticulum 
E)  smooth endoplasmic reticulum 
A)  lysosome 
B)  microtubule 
C)  lipochrome 
D)  rough endoplasmic reticulum 
E)  smooth endoplasmic reticulum

Question 3

DNA replication results in two new DNA molecules. Each of these new molecules

Accepted Answer

A)  has two newly synthesized strands of nucleotides. 
B)  has one strand of nucleotides from the parent DNA and one newly synthesized strand of nucleotides. 
C)  has two strands of nucleotides from the parent. 
D)  has a single strand of nucleotides. 
E)  are incomplete copies of the original. 
A)  has two newly synthesized strands of nucleotides. 
B)  has one strand of nucleotides from the parent DNA and one newly synthesized strand of nucleotides. 
C)  has two strands of nucleotides from the parent. 
D)  has a single strand of nucleotides. 
E)  are incomplete copies of the original.

Question 4

Some cancer cells have mutations in the p53 gene, often called the guardian of the genome. It normally functions to repair damaged DNA or cause the elimination of severely altered cells. Which of the following functions is likely regulated by p53?

Accepted Answer

A)  Anaerobic respiration 
B)  Translation 
C)  Apoptosis 
D)  Both "anaerobic respiration" and "translation" are correct. 
A)  Anaerobic respiration 
B)  Translation 
C)  Apoptosis 
D)  Both "anaerobic respiration" and "translation" are correct.

Question 5

Which of the following events occurs in the secondary active transport of glucose?

Accepted Answer

A)  Na+ ions and glucose are cotransported by the same carrier molecule. 
B)  The Na+-K+ pump maintains a Na+ concentration gradient across the plasma membrane. 
C)  Energy comes from diffusion of Na+ down their concentration gradient. 
D)  Glucose is moved against its concentration gradient into the cell. 
E)  All of the choices are correct. 
A)  Na+ ions and glucose are cotransported by the same carrier molecule. 
B)  The Na+-K+ pump maintains a Na+ concentration gradient across the plasma membrane. 
C)  Energy comes from diffusion of Na+ down their concentration gradient. 
D)  Glucose is moved against its concentration gradient into the cell. 
E)  All of the choices are correct.

Question 6

-What structure does "E" 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)  Receptor protein 
A)  Membrane channel protein 
B)  Phospholipid bilayer 
C)  Internal membrane surface 
D)  Peripheral protein 
E)  Receptor protein

Question 7

Which type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Accepted Answer

A)  Marker molecules 
B)  Channel protein 
C)  Receptor proteins 
D)  Enzymes 
E)  Carrier proteins 
A)  Marker molecules 
B)  Channel protein 
C)  Receptor proteins 
D)  Enzymes 
E)  Carrier proteins

Question 8

Chromosomes begin migrating towards poles of the cell during ________.

Accepted Answer

A)  interphase 
B)  prophase 
C)  metaphase 
D)  anaphase 
E)  telophase 
A)  interphase 
B)  prophase 
C)  metaphase 
D)  anaphase 
E)  telophase

Question 9

Which of the following events occurs in the nucleus?

Accepted Answer

A)  ATP synthesis 
B)  Ribosomal proteins formed 
C)  Chromatin condenses to form chromosomes 
D)  Production of phospholipids 
E)  None of the choices are correct. 
A)  ATP synthesis 
B)  Ribosomal proteins formed 
C)  Chromatin condenses to form chromosomes 
D)  Production of phospholipids 
E)  None of the choices are correct.

Question 10

Nucleoli

Accepted Answer

A)  are located in the cytoplasm. 
B)  produce ribosomal subunits. 
C)  have a distinct membrane. 
D)  are important for the formation of the Golgi apparatus. 
E)  regulate movement of materials into the nucleus. 
A)  are located in the cytoplasm. 
B)  produce ribosomal subunits. 
C)  have a distinct membrane. 
D)  are important for the formation of the Golgi apparatus. 
E)  regulate movement of materials into the nucleus.

Question 11

Large molecules move across the plasma membrane with the help or assistance of protein carriers. This type of transport is generally called ________.

Accepted Answer

A)  Mediated transport 
B)  Active transport 
C)  Passive transport 
D)  Vesicular transport 
A)  Mediated transport 
B)  Active transport 
C)  Passive transport 
D)  Vesicular transport

Question 12

Which type of cell would have an abundance of peroxisomes?

Accepted Answer

A)  White blood cell, a phagocyte 
B)  Mucus cell (secretes mucus) 
C)  Liver cells that detoxify hydrogen peroxide 
D)  Cardiac muscle cells (require large amounts of ATP) 
E)  Fibroblast (makes protein fibers) 
A)  White blood cell, a phagocyte 
B)  Mucus cell (secretes mucus) 
C)  Liver cells that detoxify hydrogen peroxide 
D)  Cardiac muscle cells (require large amounts of ATP) 
E)  Fibroblast (makes protein fibers)

Question 13

The RNA molecule that is synthesized in the nucleus from a DNA template is ________.

Accepted Answer

A)  tRNA 
B)  mRNA 
C)  rRNA 
D)  All of the choices are correct. 
A)  tRNA 
B)  mRNA 
C)  rRNA 
D)  All of the choices are correct.

Question 14

In ________, ions or molecules move in opposite directions.

Accepted Answer

A)  symport 
B)  uniport 
C)  antiport 
D)  comport 
E)  ionport 
A)  symport 
B)  uniport 
C)  antiport 
D)  comport 
E)  ionport

Question 15

Which of the following activities is a function of the plasma membrane?

Accepted Answer

A)  Digestion of unneeded cell organelles 
B)  Recognition of bacterial cells by the immune system 
C)  Transport of products from the nucleus to the endoplasmic reticulum 
D)  Cell metabolism 
E)  Detoxification 
A)  Digestion of unneeded cell organelles 
B)  Recognition of bacterial cells by the immune system 
C)  Transport of products from the nucleus to the endoplasmic reticulum 
D)  Cell metabolism 
E)  Detoxification

Question 16

The cytoplasm is made up of ________.

Accepted Answer

A)  cytosol 
B)  cytogel 
C)  organelles 
D)  Both "cytosol" and "organelles" are correct. 
E)  Both "cytogel" and "organelles" are correct. 
A)  cytosol 
B)  cytogel 
C)  organelles 
D)  Both "cytosol" and "organelles" are correct. 
E)  Both "cytogel" and "organelles" are correct.

Question 17

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of ________.

Accepted Answer

A)  diffusion 
B)  osmosis 
C)  active transport 
D)  bulk transport 
E)  facilitated diffusion 
A)  diffusion 
B)  osmosis 
C)  active transport 
D)  bulk transport 
E)  facilitated diffusion

Question 18

Three adjacent nucleotides in mRNA are called a ________.

Accepted Answer

A)  pre-mRNA 
B)  proenzyme 
C)  gene 
D)  ribosomal RNA (rRN
A)  
E)  codon 
A)  pre-mRNA 
B)  proenzyme 
C)  gene 
D)  ribosomal RNA (rRN
A)  
E)  codon

Question 19

The aroma of cookies baking in the kitchen reaches you in the living room. The distribution of this odor throughout the house is an example of ________.

Accepted Answer

A)  active transport 
B)  dialysis 
C)  osmosis 
D)  filtration 
E)  diffusion 
A)  active transport 
B)  dialysis 
C)  osmosis 
D)  filtration 
E)  diffusion

Question 20

Experimental manipulation to increase the energy output of the cell might include

Accepted Answer

A)  rupturing the lysosomes in the cell. 
B)  increasing the number of mitochondria. 
C)  decreasing nuclear size. 
D)  removing some of the ribosomes. 
E)  increasing protein synthesis. 
A)  rupturing the lysosomes in the cell. 
B)  increasing the number of mitochondria. 
C)  decreasing nuclear size. 
D)  removing some of the ribosomes. 
E)  increasing protein synthesis.

Exam 3: Cell Biology

If the amino acid coding region of an mRNA molecule is 1800 nucleotides (bases) in length, this molecule will contain ________ codons.

The intracellular digestive organelle of a cell is the ________.

DNA replication results in two new DNA molecules. Each of these new molecules

Some cancer cells have mutations in the p53 gene, often called the guardian of the genome. It normally functions to repair damaged DNA or cause the elimination of severely altered cells. Which of the following functions is likely regulated by p53?

Which of the following events occurs in the secondary active transport of glucose?

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

Which type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand?

Chromosomes begin migrating towards poles of the cell during ________.

Which of the following events occurs in the nucleus?

Nucleoli

Large molecules move across the plasma membrane with the help or assistance of protein carriers. This type of transport is generally called ________.

Which type of cell would have an abundance of peroxisomes?

The RNA molecule that is synthesized in the nucleus from a DNA template is ________.

In ________, ions or molecules move in opposite directions.

Which of the following activities is a function of the plasma membrane?

The cytoplasm is made up of ________.

The movement of oxygen from the alveoli of the lungs into the bloodstream is an example of ________.

Three adjacent nucleotides in mRNA are called a ________.

The aroma of cookies baking in the kitchen reaches you in the living room. The distribution of this odor throughout the house is an example of ________.

Experimental manipulation to increase the energy output of the cell might include

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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