Question 1

What is membrane potential?

Accepted Answer

A)  The rate of ATP production and transport by mitochondria. 
B)  The ability of a membrane to actively transport carbohydrates out of the cytoplasm. 
C)  The electrical charge difference across the membrane caused by ion movement. 
D)  The ability of molecules to pass through the nuclear membrane. 
A)  The rate of ATP production and transport by mitochondria. 
B)  The ability of a membrane to actively transport carbohydrates out of the cytoplasm. 
C)  The electrical charge difference across the membrane caused by ion movement. 
D)  The ability of molecules to pass through the nuclear membrane.

Question 2

In general,water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______.

Accepted Answer

A) membrane channels; membrane channels 
B) membrane channels; lipid bilayer 
C) lipid bilayer; membrane channels 
D) lipid bilayer; lipid bilayer 
E) None of these choices is correct. 
A) membrane channels; membrane channels 
B) membrane channels; lipid bilayer 
C) lipid bilayer; membrane channels 
D) lipid bilayer; lipid bilayer 
E) None of these choices is correct.

Question 3

The sacs containing hydrolytic enzymes are called

Accepted Answer

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

Question 4

The leading strand of DNA is formed as

Accepted Answer

A) soon as the lagging strand is formed. 
B) a continuous strand,adding to the 5´ end. 
C) a continuous strand,adding to the 3´ end. 
D) a template. 
E) short segments called Okazaki fragments. 
A) soon as the lagging strand is formed. 
B) a continuous strand,adding to the 5´ end. 
C) a continuous strand,adding to the 3´ end. 
D) a template. 
E) short segments called Okazaki fragments.

Question 5

What cell type would have many Golgi apparatus?

Accepted Answer

A) liver cells that detoxify hydrogen peroxide 
B) mucus cell (secretes mucus) 
C) fibroblast (makes protein fibers) 
D) cardiac muscle cells (require large amounts of ATP) 
E) white blood cell,a phagocyte 
A) liver cells that detoxify hydrogen peroxide 
B) mucus cell (secretes mucus) 
C) fibroblast (makes protein fibers) 
D) cardiac muscle cells (require large amounts of ATP) 
E) white blood cell,a phagocyte

Question 6

What type of membrane proteins allow cells to identify one another?

Accepted Answer

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

Question 7

The movement of molecules against their concentration gradient is called

Accepted Answer

A) facilitated diffusion. 
B) active transport. 
C) diffusion. 
D) endocytosis. 
E) osmosis. 
A) facilitated diffusion. 
B) active transport. 
C) diffusion. 
D) endocytosis. 
E) osmosis.

Question 8

Membrane-bound receptors

Accepted Answer

A) are small,lipid soluble molecules. 
B) have no effect on the cell. 
C) do not exhibit specificity. 
D) have their receptor sites on the outer surface of the plasma membrane. 
E) can interact with DNA in the nucleus. 
A) are small,lipid soluble molecules. 
B) have no effect on the cell. 
C) do not exhibit specificity. 
D) have their receptor sites on the outer surface of the plasma membrane. 
E) can interact with DNA in the nucleus.

Question 9

What term dealing with cancer means "spreading to a new site"?

Accepted Answer

A) malignant 
B) carcinoma 
C) metastasis 
D) benign 
E) sarcoma 
A) malignant 
B) carcinoma 
C) metastasis 
D) benign 
E) sarcoma

Question 10

Cytoplasm is found

Accepted Answer

A) in the nucleus. 
B) outside the nucleus but inside the plasma membrane. 
C) in the cisternae of the endoplasmic reticulum. 
D) on the cristae of the mitochondria. 
E) between the phospholipids in the plasma membrane. 
A) in the nucleus. 
B) outside the nucleus but inside the plasma membrane. 
C) in the cisternae of the endoplasmic reticulum. 
D) on the cristae of the mitochondria. 
E) between the phospholipids in the plasma membrane.

Question 11

When a person trains for running long distances,which of the following organelles increase in his/her muscles?

Accepted Answer

A) mitochondria 
B) lysosomes 
C) enzymes for glycolysis 
D) basal bodies 
E) rough endoplasmic reticulum 
A) mitochondria 
B) lysosomes 
C) enzymes for glycolysis 
D) basal bodies 
E) rough endoplasmic reticulum

Question 12

The bulk uptake of material by the formation of a vesicle is called

Accepted Answer

A) osmosis. 
B) facilitated diffusion. 
C) diffusion. 
D) active transport. 
E) endocytosis. 
A) osmosis. 
B) facilitated diffusion. 
C) diffusion. 
D) active transport. 
E) endocytosis.

Question 13

A red blood cell that is placed in a hypertonic solution

Accepted Answer

A) loses water. 
B) gains water. 
C) floats. 
D) ruptures. 
E) neither gains nor loses water. 
A) loses water. 
B) gains water. 
C) floats. 
D) ruptures. 
E) neither gains nor loses water.

Question 14

What type of attachment proteins attach cells to extracellular molecules?

Accepted Answer

A) ligands 
B) adherins 
C) cadherins 
D) integrins 
A) ligands 
B) adherins 
C) cadherins 
D) integrins

Question 15

What organelles produce most of the cell's energy?

Accepted Answer

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

Question 16

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

Accepted Answer

A) chromosome 
B) proteins 
C) chromatid 
D) chromatin 
E) centromere 
A) chromosome 
B) proteins 
C) chromatid 
D) chromatin 
E) centromere

Question 17

What type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

Accepted Answer

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

Question 18

The "control center" of the cell is the

Accepted Answer

A) endoplasmic reticulum. 
B) mitochondrion. 
C) nucleus. 
D) plasma membrane. 
E) ribosome. 
A) endoplasmic reticulum. 
B) mitochondrion. 
C) nucleus. 
D) plasma membrane. 
E) ribosome.

Question 19

Molecules that serve as chemical signals to open or close gated ion channels are

Accepted Answer

A) responders. 
B) ligands. 
C) isotopes. 
D) communicators. 
E) membrane potentials. 
A) responders. 
B) ligands. 
C) isotopes. 
D) communicators. 
E) membrane potentials.

Question 20

The structural RNA of ribosomes is a

Accepted Answer

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

Exam 3: Cell Biology

What is membrane potential?

In general,water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______.

The sacs containing hydrolytic enzymes are called

The leading strand of DNA is formed as

What cell type would have many Golgi apparatus?

What type of membrane proteins allow cells to identify one another?

The movement of molecules against their concentration gradient is called

Membrane-bound receptors

What term dealing with cancer means "spreading to a new site"?

Cytoplasm is found

When a person trains for running long distances,which of the following organelles increase in his/her muscles?

The bulk uptake of material by the formation of a vesicle is called

A red blood cell that is placed in a hypertonic solution

What type of attachment proteins attach cells to extracellular molecules?

What organelles produce most of the cell's energy?

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

What type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

The "control center" of the cell is the

Molecules that serve as chemical signals to open or close gated ion channels are

The structural RNA of ribosomes is 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

In general,water-soluble molecules diffuse through the ; and lipid-soluble molecules diffuse through the .