Bios 1700 exam 1 chapter 1-5 Exam
BIOS 1700 EXAM 1 CHAPTER 1-5 EXAM WITH COMPLETE QUESTIONS
AND CORRECT ANSWERS| BRAND NEW VERSION!
A protein is a long chain of amino acids and can fold into a variety of shape in the
three dimensionally. Which characteristic of carbon plays a role in this context? -
Correct Answer-A single covalent bond freely rotates about its axis.
Nucleotides G and C pair in DNA double helix with three hydrogen bonds (See the
figure). Three hydrogen atoms that covalently connected to nitrogen atoms are
positively charged because: - Correct Answer-Nitrogen atom's electronegativity is
higher than that of hydrogen atom.
An explanation supported by a large body of observations and experimentation is
referred to as a(n): - Correct Answer-theory
Observations are used by scientists to draw tentative explanations called
hypotheses.
T/F - Correct Answer-T
A controlled way of asking and answering unbiased questions about the world is
called a(n): - Correct Answer-experiment
In scientific inquiry, hypotheses lead most directly to: - Correct Answer-predictions
In the context of scientific inquiry, the words theory and hypothesis can be used
interchangeably.
1|Page
, Bios 1700 exam 1 chapter 1-5 Exam
T/F - Correct Answer-F
All organisms from all classifications of life are composed of cells.
T/F - Correct Answer-T
There are many different types of bacteria able to grow in a human host, and they
are all disease-causing organisms.
T/F - Correct Answer-F
The language of nucleic acids is converted to the language of amino acids during
the process known as: - Correct Answer-translation
You have discovered a new species of prokaryote in a deep-sea thermal vent.
Without any further characterization, which one of the statements could you
make about this species with a high degree of certainty?
None of the statements can be made with a high degree of certainty.
The organisms are from the domain Archaea.Information in RNA is transcribed
into DNA and then translated into protein.
Information in DNA is translated into RNA and then transcribed into protein.
These organisms store their genetic information as DNA.
All prokaryotes store their genetic information as DNA. The organisms may be
Archaea, but this is not a certainty. - Correct Answer-These organisms store their
genetic information as DNA.
2|Page
, Bios 1700 exam 1 chapter 1-5 Exam
Which of the scientists tested the hypothesis that microorganisms can arise by
spontaneous generation? - Correct Answer-Pasteur
Living organisms, for example a single celled organism, generally contain ----
different kinds of chemical compounds than do non-living things, for example,
rock. - Correct Answer-more
Which one of the statements explains a characteristic of both all living organisms
and all nonliving material?
They both have the capacity to evolve.
They both conform to the basic laws of chemistry and physics.
They both have the ability to reproduce.
They both are complex, with spatial organization at several levels.
They both have the ability to change in response to the environment. - Correct
Answer-They both conform to the basic laws of chemistry and physics.
Which of the examples are cellular life forms: virus, yeast, bacteria, plant, animal?
- Correct Answer-All are cellular except viruses.
Transcription is the process by which: - Correct Answer-RNA is synthesized from
DNA.
Which one of the statements represents the flow of information as described by
the central dogma of molecular biology? - Correct Answer-Information in DNA is
transcribed into RNA, which carries the information to make protein.
3|Page
, Bios 1700 exam 1 chapter 1-5 Exam
In Pasteur's experiment showing that living microorganisms arise from other living
microorganisms, which one of the statements most accurately describes Pasteur's
hypothesis? - Correct Answer-If microbes arise from nonliving matter, they should
appear spontaneously in both sterile and nonsterile broth.
The cell is defined as the simplest ( ) and ( ) unit of life. - Correct Answer-Self-
replicating; independent
Genetic information flows in the central dogma of molecular biology as: - Correct
Answer-DNA to RNA to Protein
( ) descriptions of observation will allow us to build proper hypotheses. - Correct
Answer-Detailed
A pair of shared valence electrons is referred to as a(n): - Correct Answer-Covalent
bond
Hydrogen (H) can make a covalent bond with carbon (C), nitrogen (N), and oxygen
(O). The C-H bond is non-polar while the H-N and H-O bonds are polar. It is
because: - Correct Answer-Electronegativity of nitrogen and oxygen is greater than
that of carbon.
The reason why a NaCl solution in water does not freeze at 0oC is: - Correct
Answer-The Na+ and Cl- ions in the solution interfere water molecules to form
hydrogen bonds to connect to each other.
4|Page
BIOS 1700 EXAM 1 CHAPTER 1-5 EXAM WITH COMPLETE QUESTIONS
AND CORRECT ANSWERS| BRAND NEW VERSION!
A protein is a long chain of amino acids and can fold into a variety of shape in the
three dimensionally. Which characteristic of carbon plays a role in this context? -
Correct Answer-A single covalent bond freely rotates about its axis.
Nucleotides G and C pair in DNA double helix with three hydrogen bonds (See the
figure). Three hydrogen atoms that covalently connected to nitrogen atoms are
positively charged because: - Correct Answer-Nitrogen atom's electronegativity is
higher than that of hydrogen atom.
An explanation supported by a large body of observations and experimentation is
referred to as a(n): - Correct Answer-theory
Observations are used by scientists to draw tentative explanations called
hypotheses.
T/F - Correct Answer-T
A controlled way of asking and answering unbiased questions about the world is
called a(n): - Correct Answer-experiment
In scientific inquiry, hypotheses lead most directly to: - Correct Answer-predictions
In the context of scientific inquiry, the words theory and hypothesis can be used
interchangeably.
1|Page
, Bios 1700 exam 1 chapter 1-5 Exam
T/F - Correct Answer-F
All organisms from all classifications of life are composed of cells.
T/F - Correct Answer-T
There are many different types of bacteria able to grow in a human host, and they
are all disease-causing organisms.
T/F - Correct Answer-F
The language of nucleic acids is converted to the language of amino acids during
the process known as: - Correct Answer-translation
You have discovered a new species of prokaryote in a deep-sea thermal vent.
Without any further characterization, which one of the statements could you
make about this species with a high degree of certainty?
None of the statements can be made with a high degree of certainty.
The organisms are from the domain Archaea.Information in RNA is transcribed
into DNA and then translated into protein.
Information in DNA is translated into RNA and then transcribed into protein.
These organisms store their genetic information as DNA.
All prokaryotes store their genetic information as DNA. The organisms may be
Archaea, but this is not a certainty. - Correct Answer-These organisms store their
genetic information as DNA.
2|Page
, Bios 1700 exam 1 chapter 1-5 Exam
Which of the scientists tested the hypothesis that microorganisms can arise by
spontaneous generation? - Correct Answer-Pasteur
Living organisms, for example a single celled organism, generally contain ----
different kinds of chemical compounds than do non-living things, for example,
rock. - Correct Answer-more
Which one of the statements explains a characteristic of both all living organisms
and all nonliving material?
They both have the capacity to evolve.
They both conform to the basic laws of chemistry and physics.
They both have the ability to reproduce.
They both are complex, with spatial organization at several levels.
They both have the ability to change in response to the environment. - Correct
Answer-They both conform to the basic laws of chemistry and physics.
Which of the examples are cellular life forms: virus, yeast, bacteria, plant, animal?
- Correct Answer-All are cellular except viruses.
Transcription is the process by which: - Correct Answer-RNA is synthesized from
DNA.
Which one of the statements represents the flow of information as described by
the central dogma of molecular biology? - Correct Answer-Information in DNA is
transcribed into RNA, which carries the information to make protein.
3|Page
, Bios 1700 exam 1 chapter 1-5 Exam
In Pasteur's experiment showing that living microorganisms arise from other living
microorganisms, which one of the statements most accurately describes Pasteur's
hypothesis? - Correct Answer-If microbes arise from nonliving matter, they should
appear spontaneously in both sterile and nonsterile broth.
The cell is defined as the simplest ( ) and ( ) unit of life. - Correct Answer-Self-
replicating; independent
Genetic information flows in the central dogma of molecular biology as: - Correct
Answer-DNA to RNA to Protein
( ) descriptions of observation will allow us to build proper hypotheses. - Correct
Answer-Detailed
A pair of shared valence electrons is referred to as a(n): - Correct Answer-Covalent
bond
Hydrogen (H) can make a covalent bond with carbon (C), nitrogen (N), and oxygen
(O). The C-H bond is non-polar while the H-N and H-O bonds are polar. It is
because: - Correct Answer-Electronegativity of nitrogen and oxygen is greater than
that of carbon.
The reason why a NaCl solution in water does not freeze at 0oC is: - Correct
Answer-The Na+ and Cl- ions in the solution interfere water molecules to form
hydrogen bonds to connect to each other.
4|Page
