Question 1

-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 "D"?

Accepted Answer

A) major site of ATP synthesis when oxygen is available 
B) contains digestive enzymes 
C) outer boundary of cell,controls entry and exit of substances 
D) directs cellular activities,contains DNA 
E) site of protein synthesis 
A) major site of ATP synthesis when oxygen is available 
B) contains digestive enzymes 
C) outer boundary of cell,controls entry and exit of substances 
D) directs cellular activities,contains DNA 
E) site of protein synthesis

Question 2

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

Accepted Answer

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

Question 3

Arrange the following in correct sequence: (1)protein moves through ER and then carried in vesicles to Golgi apparatus
(2)vesicle pinches off from the Golgi apparatus and carries product to plasma membrane
(3)Golgi apparatus modifies protein and then packages them into vesicles
(4)protein made by ribosomes on rough ER

Accepted Answer

A) 4,3,2,1 
B) 3,2,4,1 
C) 2,3,1,4 
D) 1,2,3,4 
E) 4,1,3,2 
A) 4,3,2,1 
B) 3,2,4,1 
C) 2,3,1,4 
D) 1,2,3,4 
E) 4,1,3,2

Question 4

Plasma membrane phospholipids

Accepted Answer

A) have tails that face the exterior of the membrane. 
B) have a hydrophilic head and hydrophobic tails. 
C) have polar (charged)tails. 
D) are arranged in a single layer. 
E) are 95% cholesterol. 
A) have tails that face the exterior of the membrane. 
B) have a hydrophilic head and hydrophobic tails. 
C) have polar (charged)tails. 
D) are arranged in a single layer. 
E) are 95% cholesterol.

Question 5

A cancer that is able to spread and become worse is called

Accepted Answer

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

Question 6

Which of the following is CORRECTLY matched with its function?

Accepted Answer

A) cell identity molecules - are primarily steroids 
B) receptor proteins - move specific ions or molecules using ATP 
C) carrier proteins - move bound ions or molecules from one side of the membrane to the other 
D) channel proteins - catalyze chemical reactions inside the cell 
E) peripheral proteins - penetrate the lipid bilayer from one surface to the other 
A) cell identity molecules - are primarily steroids 
B) receptor proteins - move specific ions or molecules using ATP 
C) carrier proteins - move bound ions or molecules from one side of the membrane to the other 
D) channel proteins - catalyze chemical reactions inside the cell 
E) peripheral proteins - penetrate the lipid bilayer from one surface to the other

Question 7

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

Accepted Answer

A) ribosome - energy production 
B) microtubules - cell support 
C) mitochondria - protein synthesis 
D) smooth ER - ATP production 
E) nucleolus - contains the genetic material of the cell 
A) ribosome - energy production 
B) microtubules - cell support 
C) mitochondria - protein synthesis 
D) smooth ER - ATP production 
E) nucleolus - contains the genetic material of the cell

Question 8

Cells that respond to ligands

Accepted Answer

A) are using electrical signals in cellular communication. 
B) generally produce the ligands. 
C) possess receptor sites for specific ligands. 
D) are not functional. 
E) have lysosomes that destroy the ligands. 
A) are using electrical signals in cellular communication. 
B) generally produce the ligands. 
C) possess receptor sites for specific ligands. 
D) are not functional. 
E) have lysosomes that destroy the ligands.

Question 9

Which of the following is NOT true of a gene?

Accepted Answer

A) It is all the triplets needed to make a functional RNA or protein. 
B) It is a segment of a DNA molecule. 
C) Each chromosome contains one gene. 
D) It is the functional unit of heredity. 
E) All of these are true of a gene. 
A) It is all the triplets needed to make a functional RNA or protein. 
B) It is a segment of a DNA molecule. 
C) Each chromosome contains one gene. 
D) It is the functional unit of heredity. 
E) All of these are true of a gene.

Question 10

Which of the following activities is associated with lysosomes?

Accepted Answer

A) energy production 
B) destruction of nonfunctional organelles 
C) intracellular support 
D) endocytosis 
E) exocytosis 
A) energy production 
B) destruction of nonfunctional organelles 
C) intracellular support 
D) endocytosis 
E) exocytosis

Question 11

A mRNA containing introns is a

Accepted Answer

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

Question 12

Which of the following is NOT true of G-protein complex action?

Accepted Answer

A) Stimulates a cell by means of extracellular chemical signals. 
B) Stimulates a cell by opening ion channels in the plasma membrane. 
C) Acts as an intermediate between a receptor and other cellular proteins. 
D) Stimulates a cell by activating enzymes associated with the plasma membrane. 
E) Stimulates a cell by means of intracellular chemical signals. 
A) Stimulates a cell by means of extracellular chemical signals. 
B) Stimulates a cell by opening ion channels in the plasma membrane. 
C) Acts as an intermediate between a receptor and other cellular proteins. 
D) Stimulates a cell by activating enzymes associated with the plasma membrane. 
E) Stimulates a cell by means of intracellular chemical signals.

Question 13

The function of the Golgi apparatus is

Accepted Answer

A) packaging and distribution of proteins and lipids. 
B) production of microtubules. 
C) DNA replication. 
D) energy production. 
E) excretion of excess salt. 
A) packaging and distribution of proteins and lipids. 
B) production of microtubules. 
C) DNA replication. 
D) energy production. 
E) excretion of excess salt.

Question 14

Membrane proteins that extend into the lipid bilayer are called

Accepted Answer

A) integral proteins. 
B) lipoproteins. 
C) peripheral proteins. 
D) glycoproteins. 
E) extrinsic proteins. 
A) integral proteins. 
B) lipoproteins. 
C) peripheral proteins. 
D) glycoproteins. 
E) extrinsic proteins.

Question 15

The structural and functional unit of all living organisms is the

Accepted Answer

A) cell. 
B) plasma membrane. 
C) organelle. 
D) ribosome. 
E) organ. 
A) cell. 
B) plasma membrane. 
C) organelle. 
D) ribosome. 
E) organ.

Question 16

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 inside the cell. 
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 these 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 inside the cell. 
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 these choices are correct.

Question 17

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

Accepted Answer

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

Question 18

Of the organelles listed,which one does NOT contain microtubules?

Accepted Answer

A) microvilli 
B) flagella 
C) centrioles 
D) cilia 
E) spindle fibers 
A) microvilli 
B) flagella 
C) centrioles 
D) cilia 
E) spindle fibers

Question 19

The collection of carbohydrates,glycolipids,and glycoproteins of the plasma membrane is called the

Accepted Answer

A) intercellular fluid. 
B) phospholipid. 
C) fluid mosaic. 
D) glycocalyx. 
E) extracellular membrane. 
A) intercellular fluid. 
B) phospholipid. 
C) fluid mosaic. 
D) glycocalyx. 
E) extracellular membrane.

Question 20

Transcription

Accepted Answer

A) occurs at the ribosomes. 
B) synthesizes RNA from DNA. 
C) synthesizes DNA from RNA. 
D) copies information from mRNA to tRNA. 
E) requires three types of RNA. 
A) occurs at the ribosomes. 
B) synthesizes RNA from DNA. 
C) synthesizes DNA from RNA. 
D) copies information from mRNA to tRNA. 
E) requires three types of RNA.

Exam 3: Cell Biology

-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 "D"?

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

Plasma membrane phospholipids

A cancer that is able to spread and become worse is called

Which of the following is CORRECTLY matched with its function?

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

Cells that respond to ligands

Which of the following is NOT true of a gene?

Which of the following activities is associated with lysosomes?

A mRNA containing introns is a

Which of the following is NOT true of G-protein complex action?

The function of the Golgi apparatus is

Membrane proteins that extend into the lipid bilayer are called

The structural and functional unit of all living organisms is the

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

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

Of the organelles listed,which one does NOT contain microtubules?

The collection of carbohydrates,glycolipids,and glycoproteins of the plasma membrane is called the

Transcription

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

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