Delgado Biology 141 Final Exam
Graded A+ (Verified)
____ are polymers containing up to 20 different kinds of naturally occurring amino acids
a) Lipids
b) Proteins
c) Carbohydrates
d) Nucleic acids - ANSWER-b) Proteins
______ cells such as gametes contain one set of
chromosomes.
A) Muscle
B) Somatic
C) Diploid
D) Haploid - ANSWER-D) Haploid
_______ adapted plants such as cacti, pineapples, etc. show a pattern of stomatal
opening and closing that is the reverse of C3 plants.
A. C4
B. Temperate
C. CAM
D. Calvin cycle - ANSWER-C. CAM
_______ is a process of nuclear division in which the number of chromosomes in
certain cells is halved during gamete formation.
A) Meiosis
B) mitosis
C) binary fission
D) cytokinesis - ANSWER-A) Meiosis
________ depend on energy stored in chemical bonds by autotrophs for their food
energy.
A. Autotrophs
B. Heterotrophs
C. Oligotrophs
D. Chemotrophs - ANSWER-B. Heterotrophs
________ is the net movement of substances to regions of lower concentration.
A. Osmosis
B. Active transport
C. Facilitation
D. Diffusion - ANSWER-D. Diffusion
,_________ is the portion of the cell cycle in which the chromosomes are invisible under
the light microscope because they are not yet condensed.
A) Interphase
B) Anaphase
C) Metaphase
D) Telophase - ANSWER-A) Interphase
__________ is the process by which certain organisms capture energy from sunlight
and use it to build energy-rich food molecules.
A. Metabolism
B. Photosynthesis
C. Respiration
D. Energy - ANSWER-B. Photosynthesis
__________ is the stage of mitosis characterized by the alignment of the chromosomes
in a circle at the center
of the cell.
A) Interphase
B) Anaphase
C) Metaphase
D) Telophase - ANSWER-C) Metaphase
___________ are viruses that attack bacteria.
A) Bacteriophages
B) HIV
C) Influenza
D) Common cold - ANSWER-A) Bacteriophages
255) The nucleotide sequence of an mRNA codon is composed of how many bases?
A) 1
B) 2
C) 3
D) 16 - ANSWER-C) 3
A bacteriophage typically attaches to the bacterium and
then
A) converts the bacteria into immortal cells
B) falls off every time
C) injects its nucleic acid into it
D) injects it's viral protein into the bacteria and the viral DNA
stays outside - ANSWER-C) injects its nucleic acid into it
A chemical reaction in which the products contain less energy than the _______ will
tend to proceed spontaneously. A. reactants
B. enzymes
C. coenzymes
,D. substrates - ANSWER-A. reactants
A chemical reaction which requires energy is called a(n) ________________ reaction.
A. exergonic
B. endergonic
C. explosive
D. heating - ANSWER-B. endergonic
A diploid organism that has two identical alleles for the same trait is called _______ for
that particular trait.
A) Homozygous
B) Heterozygous
C) Dominant
D) Codominant - ANSWER-A) Homozygous
A distinctive feature of eukaryotes is the organization of tightly packaged chromosomal
DNA with proteins into a membrane-bound structure called a:
a) Nucleolus
b) Cell
c) Nucleus - ANSWER-c) Nucleus
A gene for a particular trait that is only expressed in the presence of another gene of the
same kind is called
a(n)
A) dominant gene
B) codominant gene
C) incompletely dominant gene
D) recessive gene - ANSWER-D) recessive gene
A gram of fatty acid can yield how many more times the
energy as one gram of glucose?
A. 6x
B. 5x
C. 4x
D. 3x - ANSWER-D. 3x
A molecule that closely resembles the shape of a substrate for an enzyme might serve
as a(n)
A. an enzyme
B. allosteric modulator
C. competitive inhibitor
D. pathway blocker - ANSWER-C. competitive inhibitor
A molecule that stores energy by linking charged phosphate groups near each other is
called
A. ATP
, B. NADH
C. FADH
D. cyclic AMP
E. pyruvate - ANSWER-A. ATP
A process common to all living organisms, aerobic and anaerobic, is
A. Glycolysis
B. Fermentation
C. Krebs Cycle
D. Electron transport chain reactions
E. Pyruvate Oxidation - ANSWER-A. Glycolysis
A scientist conducts a procedure that causes nitrogen atoms to gain neutrons. The
resulting atoms will be:
a) Ions of nitrogen
b) Positively charged
c) Negatively charged
d) Isotopes of nitrogen
e) New elements with higher atomic numbers - ANSWER-d) Isotopes of nitrogen
A semi-fluid matrix called the ____ occupies the area between the nucleus and the
plasma membrane
a) Plasma membrane
b) Cytoplasm
c) Cellulae - ANSWER-b) Cytoplasm
A series of sequential chemical reactions which are maintained in the cell are called:
A. chemical reactions
B. biochemical pathways
C. energy steps
D. second messenger cascades - ANSWER-B. biochemical pathways
A single glucose molecule can drive the Krebs cycle
A. 1 turn
B. 2 turns
C. 3 turns
D. 4 turns
E. 6 turns - ANSWER-B. 2 turns
A suggested explanation that might be true and is subject to testing by further
observations is a(n):
a) Experiment
b) Generality
c) Hypothesis
d) Theory - ANSWER-c) Hypothesis
Graded A+ (Verified)
____ are polymers containing up to 20 different kinds of naturally occurring amino acids
a) Lipids
b) Proteins
c) Carbohydrates
d) Nucleic acids - ANSWER-b) Proteins
______ cells such as gametes contain one set of
chromosomes.
A) Muscle
B) Somatic
C) Diploid
D) Haploid - ANSWER-D) Haploid
_______ adapted plants such as cacti, pineapples, etc. show a pattern of stomatal
opening and closing that is the reverse of C3 plants.
A. C4
B. Temperate
C. CAM
D. Calvin cycle - ANSWER-C. CAM
_______ is a process of nuclear division in which the number of chromosomes in
certain cells is halved during gamete formation.
A) Meiosis
B) mitosis
C) binary fission
D) cytokinesis - ANSWER-A) Meiosis
________ depend on energy stored in chemical bonds by autotrophs for their food
energy.
A. Autotrophs
B. Heterotrophs
C. Oligotrophs
D. Chemotrophs - ANSWER-B. Heterotrophs
________ is the net movement of substances to regions of lower concentration.
A. Osmosis
B. Active transport
C. Facilitation
D. Diffusion - ANSWER-D. Diffusion
,_________ is the portion of the cell cycle in which the chromosomes are invisible under
the light microscope because they are not yet condensed.
A) Interphase
B) Anaphase
C) Metaphase
D) Telophase - ANSWER-A) Interphase
__________ is the process by which certain organisms capture energy from sunlight
and use it to build energy-rich food molecules.
A. Metabolism
B. Photosynthesis
C. Respiration
D. Energy - ANSWER-B. Photosynthesis
__________ is the stage of mitosis characterized by the alignment of the chromosomes
in a circle at the center
of the cell.
A) Interphase
B) Anaphase
C) Metaphase
D) Telophase - ANSWER-C) Metaphase
___________ are viruses that attack bacteria.
A) Bacteriophages
B) HIV
C) Influenza
D) Common cold - ANSWER-A) Bacteriophages
255) The nucleotide sequence of an mRNA codon is composed of how many bases?
A) 1
B) 2
C) 3
D) 16 - ANSWER-C) 3
A bacteriophage typically attaches to the bacterium and
then
A) converts the bacteria into immortal cells
B) falls off every time
C) injects its nucleic acid into it
D) injects it's viral protein into the bacteria and the viral DNA
stays outside - ANSWER-C) injects its nucleic acid into it
A chemical reaction in which the products contain less energy than the _______ will
tend to proceed spontaneously. A. reactants
B. enzymes
C. coenzymes
,D. substrates - ANSWER-A. reactants
A chemical reaction which requires energy is called a(n) ________________ reaction.
A. exergonic
B. endergonic
C. explosive
D. heating - ANSWER-B. endergonic
A diploid organism that has two identical alleles for the same trait is called _______ for
that particular trait.
A) Homozygous
B) Heterozygous
C) Dominant
D) Codominant - ANSWER-A) Homozygous
A distinctive feature of eukaryotes is the organization of tightly packaged chromosomal
DNA with proteins into a membrane-bound structure called a:
a) Nucleolus
b) Cell
c) Nucleus - ANSWER-c) Nucleus
A gene for a particular trait that is only expressed in the presence of another gene of the
same kind is called
a(n)
A) dominant gene
B) codominant gene
C) incompletely dominant gene
D) recessive gene - ANSWER-D) recessive gene
A gram of fatty acid can yield how many more times the
energy as one gram of glucose?
A. 6x
B. 5x
C. 4x
D. 3x - ANSWER-D. 3x
A molecule that closely resembles the shape of a substrate for an enzyme might serve
as a(n)
A. an enzyme
B. allosteric modulator
C. competitive inhibitor
D. pathway blocker - ANSWER-C. competitive inhibitor
A molecule that stores energy by linking charged phosphate groups near each other is
called
A. ATP
, B. NADH
C. FADH
D. cyclic AMP
E. pyruvate - ANSWER-A. ATP
A process common to all living organisms, aerobic and anaerobic, is
A. Glycolysis
B. Fermentation
C. Krebs Cycle
D. Electron transport chain reactions
E. Pyruvate Oxidation - ANSWER-A. Glycolysis
A scientist conducts a procedure that causes nitrogen atoms to gain neutrons. The
resulting atoms will be:
a) Ions of nitrogen
b) Positively charged
c) Negatively charged
d) Isotopes of nitrogen
e) New elements with higher atomic numbers - ANSWER-d) Isotopes of nitrogen
A semi-fluid matrix called the ____ occupies the area between the nucleus and the
plasma membrane
a) Plasma membrane
b) Cytoplasm
c) Cellulae - ANSWER-b) Cytoplasm
A series of sequential chemical reactions which are maintained in the cell are called:
A. chemical reactions
B. biochemical pathways
C. energy steps
D. second messenger cascades - ANSWER-B. biochemical pathways
A single glucose molecule can drive the Krebs cycle
A. 1 turn
B. 2 turns
C. 3 turns
D. 4 turns
E. 6 turns - ANSWER-B. 2 turns
A suggested explanation that might be true and is subject to testing by further
observations is a(n):
a) Experiment
b) Generality
c) Hypothesis
d) Theory - ANSWER-c) Hypothesis
