Question 1

The heat of a reaction at constant pressure is

Accepted Answer

A)  its change in entropy. 
B)  its change in enthalpy. 
C)  its change in free energy. 
D)  its spontaneity. 
A)  its change in entropy. 
B)  its change in enthalpy. 
C)  its change in free energy. 
D)  its spontaneity.

Question 2

The presence of two anhydride linkages is an important feature of

Accepted Answer

A)  ATP 
B)  proteins 
C)  glucose 
D)  carbon monoxide 
A)  ATP 
B)  proteins 
C)  glucose 
D)  carbon monoxide

Question 3

All eukaryotic organisms

Accepted Answer

A)  are multicellular 
B)  have a nucleus 
C)  have chloroplasts 
D)  have a cell wall 
A)  are multicellular 
B)  have a nucleus 
C)  have chloroplasts 
D)  have a cell wall

Question 4

The genetic code

Accepted Answer

A)  determines the order of sugars in a polysaccharide 
B)  has no effect on the sequence of amino acids in proteins 
C)  is the means by which the "blueprint" for living organisms is passed from one generation to the next 
D)  cannot be understood by currently available experimental methods 
A)  determines the order of sugars in a polysaccharide 
B)  has no effect on the sequence of amino acids in proteins 
C)  is the means by which the "blueprint" for living organisms is passed from one generation to the next 
D)  cannot be understood by currently available experimental methods

Question 5

Which statement is not correct about peptide nucleic acids, PNA?

Accepted Answer

A)  They are combinations of peptides and nucleic acids. 
B)  Scientists create them to study the origins of life 
C)  They were proven to be the first hereditary molecule. 
D)  They may combine the catalytic properties of proteins with the information transfer ability of nucleic acid 
E)  All of these statements apply to PNA. 
A)  They are combinations of peptides and nucleic acids. 
B)  Scientists create them to study the origins of life 
C)  They were proven to be the first hereditary molecule. 
D)  They may combine the catalytic properties of proteins with the information transfer ability of nucleic acid 
E)  All of these statements apply to PNA.

Question 6

The endosymbiotic theory describes the origin of

Accepted Answer

A)  the nucleus & ribosomes. 
B)  the Golgi and endoplasmic reticulum. 
C)  lysosomes and the cytoskeleton. 
D)  mitochondria & chloroplasts. 
A)  the nucleus & ribosomes. 
B)  the Golgi and endoplasmic reticulum. 
C)  lysosomes and the cytoskeleton. 
D)  mitochondria & chloroplasts.

Question 7

Which cell component is able to capture the energy of light?

Accepted Answer

A)  Nucleus 
B)  Lysosome 
C)  Rough Endoplasmic Reticulum 
D)  Chloroplast 
E)  Mitochondrion 
A)  Nucleus 
B)  Lysosome 
C)  Rough Endoplasmic Reticulum 
D)  Chloroplast 
E)  Mitochondrion

Question 8

Which of the following functional groups is specific to an alcohol?

Accepted Answer

A)  -NH 
B)  -OH 
C)  -C=O 
D)  C=C 
E)  O-P 
A)  -NH 
B)  -OH 
C)  -C=O 
D)  C=C 
E)  O-P

Question 9

The main difference between prokaryotic and eukaryotic cells is the existence of _____ in eukaryotes.

Accepted Answer

A)  the nucleus 
B)  ribosomes 
C)  DNA 
D)  RNA 
E)  cell walls 
A)  the nucleus 
B)  ribosomes 
C)  DNA 
D)  RNA 
E)  cell walls

Question 10

The endoplasmic reticulum

Accepted Answer

A)  is part of a continuous membrane system throughout the cell 
B)  occurs in two forms, rough and smooth 
C)  can have ribosomes bound to it 
D)  all of the above 
A)  is part of a continuous membrane system throughout the cell 
B)  occurs in two forms, rough and smooth 
C)  can have ribosomes bound to it 
D)  all of the above

Question 11

11 Ribosomes are made up of

Accepted Answer

A)  RNA and proteins 
B)  DNA and proteins 
C)  RNA and DNA 
D)  proteins and carbohydrates 
A)  RNA and proteins 
B)  DNA and proteins 
C)  RNA and DNA 
D)  proteins and carbohydrates

Question 12

Cell membranes

Accepted Answer

A)  are found in plants, but not in animals 
B)  consist mainly of sugars 
C)  do not allow transport into or out of the cell 
D)  separate the cell from the outside world 
A)  are found in plants, but not in animals 
B)  consist mainly of sugars 
C)  do not allow transport into or out of the cell 
D)  separate the cell from the outside world

Question 13

Which organelle is involved in the synthesis of ATP?

Accepted Answer

A)  Nucleus 
B)  Mitochondrion 
C)  Chloroplast 
D)  ATP is synthesized in both mitochondria and chloroplasts. 
E)  ATP is synthesized in all three organelles. 
A)  Nucleus 
B)  Mitochondrion 
C)  Chloroplast 
D)  ATP is synthesized in both mitochondria and chloroplasts. 
E)  ATP is synthesized in all three organelles.

Question 14

Ribosomes

Accepted Answer

A)  are the site of photosynthesis 
B)  are the site of protein synthesis 
C)  are never bound to membranes 
D)  cannot be seen in the electron microscope 
A)  are the site of photosynthesis 
B)  are the site of protein synthesis 
C)  are never bound to membranes 
D)  cannot be seen in the electron microscope

Question 15

The following cellular component is the defining component of most plant cells:

Accepted Answer

A)  Nucleus 
B)  Ribosomes 
C)  Chloroplasts 
D)  Mitochondria 
E)  Cell walls 
A)  Nucleus 
B)  Ribosomes 
C)  Chloroplasts 
D)  Mitochondria 
E)  Cell walls

Question 16

Which cell component is composed of RNA and protein?

Accepted Answer

A)  Nucleus 
B)  Mitochondrion 
C)  Endoplasmic Reticulum 
D)  Chloroplast 
E)  Ribosome 
A)  Nucleus 
B)  Mitochondrion 
C)  Endoplasmic Reticulum 
D)  Chloroplast 
E)  Ribosome

Question 17

Matching
Match the macromolecules with the monomeric unit in each.
-monosaccharide

Accepted Answer

A) nucleic acids 
B) proteins 
C) carbohydrate 
A) nucleic acids 
B) proteins 
C) carbohydrate

Question 18

Which of the following shows the correct order from most simple to most complex:

Accepted Answer

A)  atom, molecule, organelle, macromolecule 
B)  molecule, atom, macromolecule, organelle 
C)  tissue, cell, organ 
D)  atom, macromolecule, tissue, organ 
A)  atom, molecule, organelle, macromolecule 
B)  molecule, atom, macromolecule, organelle 
C)  tissue, cell, organ 
D)  atom, macromolecule, tissue, organ

Question 19

According to thermodynamics, favored processes are

Accepted Answer

A)  ones that require energy. 
B)  ones that release energy. 
C)  oxidations. 
D)  reductions. 
A)  ones that require energy. 
B)  ones that release energy. 
C)  oxidations. 
D)  reductions.

Question 20

Prokaryotes

Accepted Answer

A)  contain ribosomes 
B)  do not have a cell membrane 
C)  contain mitochondria 
D)  none of the above 
A)  contain ribosomes 
B)  do not have a cell membrane 
C)  contain mitochondria 
D)  none of the above

Exam 1: Biochemistry and the Organization of Cells

The heat of a reaction at constant pressure is

The presence of two anhydride linkages is an important feature of

All eukaryotic organisms

The genetic code

Which statement is not correct about peptide nucleic acids, PNA?

The endosymbiotic theory describes the origin of

Which cell component is able to capture the energy of light?

Which of the following functional groups is specific to an alcohol?

The main difference between prokaryotic and eukaryotic cells is the existence of _____ in eukaryotes.

The endoplasmic reticulum

11 Ribosomes are made up of

Cell membranes

Which organelle is involved in the synthesis of ATP?

Ribosomes

The following cellular component is the defining component of most plant cells:

Which cell component is composed of RNA and protein?

Matching Match the macromolecules with the monomeric unit in each. -monosaccharide

Which of the following shows the correct order from most simple to most complex:

According to thermodynamics, favored processes are

Prokaryotes

Water: the Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of RNA

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

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