Question 1

What are the four key classes of biomolecules?

Accepted Answer

Proteins, DNA/RNA, lipids, car

Question 2

The main function of the plasma membrane is to:

Accepted Answer

A)  provide the interior of the cell an enclosed environment which no molecules may cross. 
B)  provide a selectively permeable barrier with the aid of transport proteins. 
C)  give eukaryote and prokaryote cells structural strength. 
D)  allow only the free passage of water in and out of the cell. 
E)  None of the above. 
A)  provide the interior of the cell an enclosed environment which no molecules may cross. 
B)  provide a selectively permeable barrier with the aid of transport proteins. 
C)  give eukaryote and prokaryote cells structural strength. 
D)  allow only the free passage of water in and out of the cell. 
E)  None of the above.

Question 3

Although all cells in an organism have the same DNA, tissues differ due to selective _______________.

Accepted Answer

The answer of Although all cells in an organism have...

Question 4

After hydrogen and oxygen, the next most common element in living systems is _______________.

Accepted Answer

The answer of After hydrogen and oxygen, the next most...

Question 5

Use the following to answer questions 1-10:
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: Highly organized region of the cell where glycolytic metabolism occurs.

Accepted Answer

A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome 
A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome

Question 6

What is significant about the base pairing found in the helix?

Accepted Answer

It provides a mechan

Question 7

Of the biochemical macromolecules, which class is chiefly responsible for catalysis of cellular processes?

Accepted Answer

The answer of Of the biochemical macromolecules, which class is...

Question 8

A chemical that can dissolve in water is said to be _______________.

Accepted Answer

The answer of A chemical that can dissolve in water...

Question 9

The most common carbohydrate fuel is _______________.

Accepted Answer

The answer of The most common carbohydrate fuel is _______________....

Question 10

Heritable information is packaged into discrete units called _______________.

Accepted Answer

The answer of Heritable information is packaged into discrete units...

Question 11

The central dogma describes:

Accepted Answer

A)  the formation of cells from individual components. 
B)  the selective expression of genes. 
C)  the flow of information between DNA, RNA, and protein. 
D)  the work of polymerases on RNA and DNA. 
E)  All of the above. 
A)  the formation of cells from individual components. 
B)  the selective expression of genes. 
C)  the flow of information between DNA, RNA, and protein. 
D)  the work of polymerases on RNA and DNA. 
E)  All of the above.

Question 12

Large particles of extracellular material are taken into the cell via:

Accepted Answer

The answer of Large particles of extracellular material are taken...

Question 13

In higher organisms, which of the following is composed of a polymer with double-stranded phosphodiester-linked monomers?

Accepted Answer

A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrate 
E)  None of the above. 
A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrate 
E)  None of the above.

Question 14

What gives proteins such a dominant role in biochemistry?

Accepted Answer

A)  the variation in protein sizes 
B)  the ability to act as a blueprint 
C)  their ability to self-replicate 
D)  their ability to spontaneously fold into complex three-dimensional structures 
E)  All of the above. 
A)  the variation in protein sizes 
B)  the ability to act as a blueprint 
C)  their ability to self-replicate 
D)  their ability to spontaneously fold into complex three-dimensional structures 
E)  All of the above.

Question 15

Poisons that kill an organism as a result of a loss of high-energy ATP molecules are most likely to target which organelle?

Accepted Answer

A)  mitochondria 
B)  cytoskeleton 
C)  cytoplasm 
D)  endoplasmic reticulum 
E)  nucleus 
A)  mitochondria 
B)  cytoskeleton 
C)  cytoplasm 
D)  endoplasmic reticulum 
E)  nucleus

Question 16

Use the following to answer questions 1-10:
Choose the correct answer from the list below. Not all of the answers will be used.
-DNA is made from the building blocks adenine, guanine, cytosine, and ____________.

Accepted Answer

A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome 
A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome

Question 17

Use the following to answer questions 1-10:
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: Responsible for protein processing and xenobiotic metabolism.

Accepted Answer

A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome 
A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome

Question 18

Use the following to answer questions 1-10:
Choose the correct answer from the list below. Not all of the answers will be used.
-____________: The number of hydrogen bonds formed between G and C.

Accepted Answer

A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome 
A) uridine 
B) cytoplasm 
C) protein 
D) thymine 
E) carbohydrate
F)sugar-phosphate units
G)cell wall
H)transcription
I)glycogen
J)lipid
K)three
L)two
M)endoplasmic reticulum
N)translation
O)prokaryotes
P)eukaryotes
Q)lysozome

Question 19

Define an organelle.

Accepted Answer

An organelle is often, but not always, e

Question 20

Which property of lipids drives the formation of membranes?

Accepted Answer

The dual chemical na

Exam 1: Biochemistry and the Unity of Life

What are the four key classes of biomolecules?

The main function of the plasma membrane is to:

Although all cells in an organism have the same DNA, tissues differ due to selective _______________.

After hydrogen and oxygen, the next most common element in living systems is _______________.

Use the following to answer questions 1-10: Choose the correct answer from the list below. Not all of the answers will be used. -____________: Highly organized region of the cell where glycolytic metabolism occurs.

What is significant about the base pairing found in the helix?

Of the biochemical macromolecules, which class is chiefly responsible for catalysis of cellular processes?

A chemical that can dissolve in water is said to be _______________.

The most common carbohydrate fuel is _______________.

Heritable information is packaged into discrete units called _______________.

The central dogma describes:

Large particles of extracellular material are taken into the cell via:

In higher organisms, which of the following is composed of a polymer with double-stranded phosphodiester-linked monomers?

What gives proteins such a dominant role in biochemistry?

Poisons that kill an organism as a result of a loss of high-energy ATP molecules are most likely to target which organelle?

Use the following to answer questions 1-10: Choose the correct answer from the list below. Not all of the answers will be used. -DNA is made from the building blocks adenine, guanine, cytosine, and ____________.

Use the following to answer questions 1-10: Choose the correct answer from the list below. Not all of the answers will be used. -____________: Responsible for protein processing and xenobiotic metabolism.

Use the following to answer questions 1-10: Choose the correct answer from the list below. Not all of the answers will be used. -____________: The number of hydrogen bonds formed between G and C.

Define an organelle.

Which property of lipids drives the formation of membranes?

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant Dna Techniques

Filters