Question 1

Genes that play a role in the regulation of mitosis are called

Accepted Answer

A) proto-oncogenes. 
B) apoptogenes. 
C) oncogenes. 
D) mutagens. 
E) basal cells. 
A) proto-oncogenes. 
B) apoptogenes. 
C) oncogenes. 
D) mutagens. 
E) basal cells.

Question 2

Messenger RNA

Accepted Answer

A) is synthesized when a portion of a DNA molecule is transcribed. 
B) directs the synthesis of DNA. 
C) is not involved in the synthesis of proteins. 
D) determines the sequence of nucleotides in the anticodons of tRNA. 
E) directs the synthesis of centrioles in the cytoplasm. 
A) is synthesized when a portion of a DNA molecule is transcribed. 
B) directs the synthesis of DNA. 
C) is not involved in the synthesis of proteins. 
D) determines the sequence of nucleotides in the anticodons of tRNA. 
E) directs the synthesis of centrioles in the cytoplasm.

Question 3

The cytoplasm is made up of

Accepted Answer

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

Question 4

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

Accepted Answer

A) isotonic solution 
B) crenated 
C) hypotonic solution 
D) lyzed 
E) hypertonic solution 
A) isotonic solution 
B) crenated 
C) hypotonic solution 
D) lyzed 
E) hypertonic solution

Question 5

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Accepted Answer

A) vacuole. 
B) cytogel. 
C) centrosome. 
D) cytosol. 
E) proteasome. 
A) vacuole. 
B) cytogel. 
C) centrosome. 
D) cytosol. 
E) proteasome.

Question 6

Check all that occur at the cellular level as a result of aging.
_____ Cells experience increased metabolic functions.
__X__ Cells experience a decreased ability to maintain homeostasis.
__X__ The process of cell division becomes faulty,resulting in a greater risk for cancer.
_____

Accepted Answer

The risk for unsucce

Question 7

The plasma membrane

Accepted Answer

A) is not permeable. 
B) regulates movement of materials into and out of the cell. 
C) has a single layer of phospholipids. 
D) is a rigid protein membrane. 
E) separates the nucleus from the rest of the cell. 
A) is not permeable. 
B) regulates movement of materials into and out of the cell. 
C) has a single layer of phospholipids. 
D) is a rigid protein membrane. 
E) separates the nucleus from the rest of the cell.

Question 8

Large molecules move across cell membrane with the help or assistance of protein carriers.This type of transport is generically called _______.

Accepted Answer

A)  mediated transport 
B)  passive transport 
C)  active transport 
A)  mediated transport 
B)  passive transport 
C)  active transport

Question 9

The plasma membrane is selectively permeable.This means

Accepted Answer

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

Question 10

Chromatin condenses and nucleoli disappear during

Accepted Answer

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

Question 11

Which of the following is NOT associated with interphase?

Accepted Answer

A) The centrioles duplicate. 
B) The cell grows. 
C) The cell does nothing but rest. 
D) The cell does what it is designed to do. 
E) The DNA replicates. 
A) The centrioles duplicate. 
B) The cell grows. 
C) The cell does nothing but rest. 
D) The cell does what it is designed to do. 
E) The DNA replicates.

Question 12

What type of membrane proteins can catalyze chemical reactions on the inner or outer surfaces of the plasma membrane?

Accepted Answer

A) channel protein 
B) carrier proteins 
C) receptor proteins 
D) enzymes 
E) marker molecules 
A) channel protein 
B) carrier proteins 
C) receptor proteins 
D) enzymes 
E) marker molecules

Question 13

Vitamin A,a fat-soluble vitamin,would move across the plasma membrane into the cell

Accepted Answer

A) through vitamin membrane channels. 
B) in vesicles. 
C) by dissolving in the lipid bilayer. 
D) by active transport. 
E) by transport with carrier molecules. 
A) through vitamin membrane channels. 
B) in vesicles. 
C) by dissolving in the lipid bilayer. 
D) by active transport. 
E) by transport with carrier molecules.

Question 14

Posttranscriptional processing is the modification of

Accepted Answer

A) DNA. 
B) proteins to form pro-proteins. 
C) mRNA to form tRNA. 
D) exons to form introns. 
E) pre-mRNA to form functional mRNA. 
A) DNA. 
B) proteins to form pro-proteins. 
C) mRNA to form tRNA. 
D) exons to form introns. 
E) pre-mRNA to form functional mRNA.

Question 15

What organelles are the sites of protein synthesis?

Accepted Answer

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

Question 16

The lower limit of resolution of a light microscope is

Accepted Answer

A) 1.0$\mu$m 
B) 0.01$\mu$m 
C) 100$\mu$m 
D) 0.1$\mu$m 
E) 10$\mu$m 
A) 1.0$\mu$m 
B) 0.01$\mu$m 
C) 100$\mu$m 
D) 0.1$\mu$m 
E) 10$\mu$m

Question 17

Ion movement across the plasma membrane creates an electrical charge difference known as ______.

Accepted Answer

A)  extracellular glycocalyx 
B)  transcription 
C)  respiration 
D)  membrane potential 
A)  extracellular glycocalyx 
B)  transcription 
C)  respiration 
D)  membrane potential

Question 18

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

Accepted Answer

A) crenated 
B) hypotonic solution 
C) isotonic solution 
D) hypertonic solution 
E) hemolyzed 
A) crenated 
B) hypotonic solution 
C) isotonic solution 
D) hypertonic solution 
E) hemolyzed

Question 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 3: Cell Biology

Genes that play a role in the regulation of mitosis are called

Messenger RNA

The cytoplasm is made up of

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

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Check all that occur at the cellular level as a result of aging. _____ Cells experience increased metabolic functions. __X__ Cells experience a decreased ability to maintain homeostasis. __X__ The process of cell division becomes faulty,resulting in a greater risk for cancer. _____

The plasma membrane

Large molecules move across cell membrane with the help or assistance of protein carriers.This type of transport is generically called _______.

The plasma membrane is selectively permeable.This means

Chromatin condenses and nucleoli disappear during

Which of the following is NOT associated with interphase?

What type of membrane proteins can catalyze chemical reactions on the inner or outer surfaces of the plasma membrane?

Vitamin A,a fat-soluble vitamin,would move across the plasma membrane into the cell

Posttranscriptional processing is the modification of

What organelles are the sites of protein synthesis?

The lower limit of resolution of a light microscope is

Ion movement across the plasma membrane creates an electrical charge difference known as ______.

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

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

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

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints 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-Based Balance

Reproductive System

Development,growth,aging,and Genetics

Filters

Check all that occur at the cellular level as a result of aging. _ Cells experience increased metabolic functions. X Cells experience a decreased ability to maintain homeostasis. X The process of cell division becomes faulty,resulting in a greater risk for cancer. _